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EM MICROELECTRONIC - MARIN SA
EMDB6812
EMDB6812 V1.1 MANUAL VERSION 1.0
CONTENTS
1. 2. INTRODUCTION ........................................................................................................................................ 2 HARDWARE DESCRIPTION ..................................................................................................................... 2
2.1 2.2 2.3 PARTS.....................................................................................................................................................................2 Hardware BOARD versionning ...............................................................................................................................3 DEMOBOARD DESCRIPTION ...............................................................................................................................3 2.3.1 Connector description ............................................................................................................................4 2.3.2 Demoboard Schematic ..........................................................................................................................6 SAMPLE BOARD DESCRIPTION ..........................................................................................................................7 2.4.1 SampleBoard schematic ........................................................................................................................7 Partlist......................................................................................................................................................................8 Power-Supply ..........................................................................................................................................................9 VPP/TEST ...............................................................................................................................................................9 Port A switches........................................................................................................................................................9 Port B leds .............................................................................................................................................................10 Oscillator................................................................................................................................................................10 Programming .........................................................................................................................................................10 Reset .....................................................................................................................................................................10 Introduction............................................................................................................................................................11 Architecture ...........................................................................................................................................................11 4.2.1 Features ...............................................................................................................................................11 Function.................................................................................................................................................................11 Software ................................................................................................................................................................12 4.4.1 CPU operation Modes..........................................................................................................................12 4.4.2 Main loop..............................................................................................................................................12 4.4.3 RTC ......................................................................................................................................................13 4.4.4 Command GetTime, 0xA0 ...................................................................................................................14 4.4.5 Command SetTime, 0xA1....................................................................................................................14 4.4.6 Command SetTimer, 0xA2 ..................................................................................................................15 4.4.7 Command DisablePower, 0x80 ...........................................................................................................15 4.4.8 Command EnablePower, 0x81 ............................................................................................................16 4.4.9 Command SetPWM1, 0x82 .................................................................................................................16 4.4.10 Command SetPWM2, 0x83 .................................................................................................................16 4.4.11 Command SetOutputs, 0x84 ...............................................................................................................16 4.4.12 Command GetKeys, 0x90....................................................................................................................17 4.4.13 Command GetSVLD, 0x92 ..................................................................................................................17 HOST Application..................................................................................................................................................18 4.5.1 Setup ....................................................................................................................................................18 4.5.2 Commands ...........................................................................................................................................19
2.4 2.5
3.
HARDWARE CONFIGURATION ............................................................................................................... 9
3.1 3.2 3.3 3.4 3.5 3.6 3.7
4.
APPENDIX : DEMO APPLICATION ........................................................................................................ 11
4.1 4.2 4.3 4.4
4.5
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EMDB6812
1. INTRODUCTION
This document describes EMDB6812 Demoboard for EM6812 microcontroller. This board contains a Flash EM6812 microcontroller and additional parts to evaluate EM6812 product and test your application. You will be able to : - Program with external programmer the Flash EM6812 through the dedicated In-System-Programming connector or by On-Socket insertion mode - Evaluate or run your application with the help of the existing components assembled on the board (push-button, leds, buzzer, RS232 interface, switches) and open extensions (connectors, user area).
2.
HARDWARE DESCRIPTION
2.1 PARTS The EMDB6812 is based on two PCBs : * * Main board (DemoBoard 6812) Socket for EM6812 Flash microcontroller (SampleBoard 6812)
DemoBoard
SampleBoard
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2.2 HARDWARE BOARD VERSIONNING DemoBoard V1.1 SampleBoard V1.0 2.3 DEMOBOARD DESCRIPTION PCB size : 160 mm x 100 mm
CON3 CON7 BATTERY CON6 DIP1-8 SWITCH SELECTION BUZ 1 CON5
S1
...
DS9
S6 DS1 USER AREA
S7
CON1
S8
U2 SOCKET
DIP2-10 LEDS / BUZZER SELECTION
...
CON8 BUZ 2 CON2 CON4 DS8
USER AREA S1...S6 DS1...DS8 BUZ1/BUZ2 DIP1-8 DIP2-10 BATTERY U2 DS9 S8 S7 CON1 CON2 CON3 & CON4 CON5 CON6 CON7 CON8
Free user area (2.54 mm and 1.27 mm) with power lines (GND and VDD_IN) 6 Push-Buttons connected to PA0...PA5 through DIP1-8 switches 8 Low-power red leds connected to PB0...PB7 through DIP2-10 switches Buzzers connected to PB0 through DIP2-10 switches Switches for S1...S6 connections (PA0...PA5), RX (PA6), TX (PA7) Switches for DS1...DS8 connections (PB0...PB7), Buzzers (PB0), pull-down (VPP_TEST) Battery socket (2032) Socket (DIL24) for Sample Board Low-power red led connected to EXT_VDD Switch for programming / application mode Reset Push-Button In-System-Programming connector User connections (Ground, Power, Reset, ...) Port A, Port B user connector User connections (Ground, Power, Reset) DB9 connector for RS232 Power / Reset configuration connector External oscillator connections
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2.3.1 Connector description
2.3.1.1. CON1 In-System-Programming connector (compatibility Elnec programmer ISP cable) Header 2x5 male - 2.54 mm
1 2 3 4 5 6 7 8 9 10 Power X In X X Inout Power In Power Power VDD_IN N.C. RST_EXT N.C. N.C. SDIO GND SCLK GND VPP/TESTISP EM6812 VDD supply No Connect External reset No Connect No Connect Data IO program. Ground Clock program Ground VPP/TESTISP program.
2.3.1.2. CON2 User connector Header 1x8 male - 2.54 mm
1 2 3 4 5 6 7 8 Power Power In In In X Power Power GND VDD_EXT RST_EXT OSCIN_EXT OSCOUT_EXT N.C. VDD_IN GND Ground External VDD supply External reset External OSCIN connection External OSCOUT connection No Connect EM6812 VDD supply Ground
2.3.1.3. CON3, CON4 Port user connector Header 2x10 male - 2.54 mm
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Power Power Inout Inout Inout Inout Inout Inout Inout Inout Inout Inout Inout Inout Inout Inout Inout Inout Power Power GND GND PA0 PB0 PA1 PB1 PA2 PB2 PA3 PB3 PA4 PB4 PA5 PB5 PA6 PB6 PA7 PB7 GND GND Ground Ground Port A bit 0 Port B bit 0 Port A bit 1 Port B bit 1 Port A bit 2 Port B bit 2 Port A bit 3 Port B bit 3 Port A bit 4 Port B bit 4 Port A bit 5 Port B bit 5 Port A bit 6 Port B bit 6 Port A bit 7 Port B bit 7 Ground Ground
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2.3.1.4. CON5 User connector Header 2x3 male - 2.54 mm
1 2 3 4 5 6 Power Power In Power Power X GND VDD_EXT RST_EXT VDD_IN GND N.C. Ground External VDD supply External reset EM6812 VDD supply Ground No Connect
2.3.1.5. CON6 RS232 User connector DB9 female
1 2 3 4 5 6 7 8 9 X Out In X Power X X X X N.C. TX RX N.C. GND N.C. N.C. N.C. N.C. No Connect RS232 Transmitter output RS232 Receiver input No Connect Ground No Connect No Connect No Connect No Connect
2.3.1.6. CON7 Configuration connector Header 2x7 male - 2.54 mm
1 2 3 4 5 6 7 8 9 10 11 12 19 20 Power Power Power Power Power Power In In Power Power Power Power Power Power GND GND VBAT VDD_IN VDD_EXT VDD_IN RST_EXT RESET_PAD VPP/TEST VPP/TESTISP VPP/TEST VPP/TESTISP GND GND Ground Ground Battery power supply EM6812 VDD supply External VDD supply EM6812 VDD supply External reset EM6812 reset EM6812 VPP/TEST VPP/TESTISP program. EM6812 VPP/TEST VPP/TESTISP program. Ground Ground
2.3.1.7. CON8 External oscillator connector Header 2x2 male - 2.54 mm
1 2 3 4 In In In In OSCOUT_EXT OSCOUT OSCIN_EXT OSCIN External OSCOUT connection EM6812 OSCOUT connection External OSCIN connection EM6812 OSCIN connection
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2.3.2 Demoboard Schematic
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2.4 SAMPLE BOARD DESCRIPTION PCB size : 35.56 mm x 24.88 mm Existing SampleBoard are one to one wired converter : * * DIL24 (600 mils width) to SOIC24(1.27 mm pitch - 300 mils body width) DIL24 (600 mils width) to TSSOP24 (0.65 mm pitch - 4.4mm body width)
Each SampleBoard contains an EM6812 Flash Microcontroller and a Crystal 32768 Hz.
32768Hz
EM6812 MCU
2.4.1
SampleBoard schematic
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2.5 PARTLIST
Description Battery Support for Typ 2032 Polarized Capacitor (Surface Mount) Polarized Capacitor (Surface Mount) Polarized Capacitor (Surface Mount) Polarized Capacitor (Surface Mount) Polarized Capacitor (Surface Mount) Polarized Capacitor (Surface Mount) Capacitor (Semiconductor SIM Model) Capacitor (Semiconductor SIM Model) Header, 5-Pin, Dual row Header, 8-Pin Header, 3-Pin, Dual row DB9, Right Angle Header, 7-Pin, Dual row DIP Switch DIP Switch RED GaAs LED RED GaAs LED RED GaAs LED RED GaAs LED RED GaAs LED RED GaAs LED RED GaAs LED RED GaAs LED RED GaAs LED Header, 10-Pin, Dual row Header, 10-Pin, Dual row Header, 10-Pin, Dual row Resistor Resistor Resistor Resistor Resistor Resistor Resistor Switch Switch Switch Switch Switch Switch Switch Switch Low profil support 600 Mils DIL24 RS-232 Transceiver with AutoShutdown Designator BT1 C1 C2 C3 C4 C5 C6 C7 C8 CON1 CON2 CON5 CON6 CON7 DIP1-8 DIP2-10 DS1 DS2 DS3 DS4 DS5 DS6 DS7 DS8 DS9 CON3 CON4 CON8 R1 R2 R3 R4 R5 R8 R9 S1 S2 S3 S4 S5 S6 S7 S8 U2 U3 Footprint BAT-2 2917 1206 1206 1411 1411 1411 1206 1206 HDR2X5 HDR1X8 HDR2X3 DSUB1.385-2H9 HDR2X7 DIP-16 DIP-20 LED LED LED LED LED LED LED LED LED HDR2X10 HDR2X10 HDR2X10 1206 1206 1206 1206 1206 1206 1206 SPST-2 SPST-2 SPST-2 SPST-2 SPST-2 SPST-2 SPST-2 DPDTOS2020 DIP24 SSO-G16/X.4 Maxim MAX3221CAE 27 27 27 27 100K 100K 47 ITT Canon ITT Canon ITT Canon ITT Canon ITT Canon ITT Canon ITT Canon ITT Canon KSC421J KSC421J KSC421J KSC421J KSC421J KSC421J KSC421J OS202011MS2QN1 Multicomp Multicomp Temic Temic Temic Temic Temic Temic Temic Temic Temic MCNDI-08S MCNDI-10S TLMT3100 TLMT3100 TLMT3100 TLMT3100 TLMT3100 TLMT3100 TLMT3100 TLMT3100 TLMT3100 10uF 100nF 100nF 470nF 470nF 470nF 100nF 470nF Value Constructor KEYSTONE Ref Constructor
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3. HARDWARE CONFIGURATION
3.1 POWER-SUPPLY EM6812 samples can be powered (VDD_IN) with two different sources : * * Battery : VBAT External Power-supply : VDD_EXT
Selection is done with a jumper configuration on CON7 Jumper CON7-3 / CON7-4 ON OFF Jumper CON7-5 / CON7-6 OFF ON
Battery configuration External configuration
VBAT : * Requires CR2032 3V battery in socket BT1 * Can be measured on CON7-3 VDD_EXT : * Can be applied or measured on CON2-2 and CON5-2 * When applied will light on DS9 red led VDD_IN / IDD_IN: * VDD_IN is the operating power supply for the EM6812 * IDD_IN current measurement can be done by placing ammeter between CON7-3 / CON7-4 (Battery source) or CON7-5 / CON7-6 (External source) Notes : 1. For In-System-programming step refer to ISP programming application note for powersupply details. Safe operation procedure is to apply VDD_IN EM6812 from the programmer power-supply (CON1) : No other VBAT and VDD_EXT supplied and no load on the InSystem-Programming connections. 2. VDD_IN is connected to EM6812 VDD pin as the MAX3221 RS232 transceiver VCC (U3 + C2 capacitor) ! 3.2 VPP/TEST During programming sequence a jumper is needed on CON7-9 / CON7-10 or CON7-11 / CON7-12. This jumper does not need to be removed after programming. Optionally, an external pull-down can be connected on EM6812 TEST pin (Select ON for the DIP210 position 10). 3.3 PORT A SWITCHES S1...S6 switches can be connected to EM6812 Port A (Port A bit 0 ... 5). Select ON for the corresponding DIP1-8 position (1...6). When the switch is activated, corresponding Port A bit is tied to `0'. RS232 transceiver (TX) can be connected to Port A bit 6. Select ON for the DIP1-8 position 7. RS232 transceiver (RX) can be connected to Port A bit 7. Select ON for the DIP1-8 position 8.
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3.4 PORT B LEDS DS1...DS8 leds can be connected to EM6812 Port B (Port B bit 0 ... 7). Select ON for the corresponding DIP2-10 position (1...8). Buzzer (BUZ1 or BUZ2) can be connected to Port B bit 0. Select ON for the DIP2-10 position 9.
3.5 OSCILLATOR By default, a 32768Hz crystal is assembled on each SampleBoard. Optionally crystal capacitance can be added (2 empty footprints). For specific EM6812 modes, it can be necessary to use OSCIN/OSCOUT for other purpose. If necessary connect external signals on CON2-4 (OSCIN_EXT) or CON2-5 (OSCOUT_EXT) and place jumpers on CON8-1/CON8-2 or CON8-3/CON8-4. 3.6 PROGRAMMING During In-System-Programming it is recommended to isolate pins PB5 (SCLK) and PB7 (SDIO) from the application connections. Refer to ISP programming application note for details. A slide switch S8 selects the mode (programming or application) for both pins. For the current mode to be executed, you must ensure the appropriate switch position selection. 3.7 RESET A reset switch S7 reset the EM6812. It is also possible to add an external reset. This external reset (RST_EXT) must be applied on CON2-3 and must be enabled by adding a jumper on CON77/CON7-8.
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EMDB6812
4. APPENDIX : DEMO APPLICATION
4.1 INTRODUCTION The goal is to run a typical User Front-end Controller which allows to keep the power consumption in standby mode at a minimum while RTC, Timer and Keyboard- handling are still fully working. Furthermore this controller shall serve as Power-On Reset, Battery Level Detector and IO Extension.
Note: o = output i = input
4.2 ARCHITECTURE
Microcontroller
HOST_RX HOST_TX
Host Simulated by PC SWUART Keys
HOST_32k
32kHz PWM CTRL
HOST_PWR
SVLD Aux Outputs RTC / Timer
4.2.1
Features
The Microcontroller has the following functions: * Power-On Reset * Serial Interface to the Host (Software UART) * RTC Timer * 32kHz digital clock output to the host * Power-Up of the Host * Battery Level Detector * Auxiliary Outputs * Key Inputs 4.3 FUNCTION When powering up the system, the Microcontroller is reset automatically, as soon as the ResetThreshold of its Power-On-Reset is reached. It will then initialize itself, Power-Up the Host, and enable the 32kHz Source which can be used by the Host. From now on, the Host can send commands via the serial interface to the Microcontroller to get/set the corresponding information. Available commands are:
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* * * * * * * * PowerDown, Powers down the Host (eg. if battery level too low) GetTime, Read the Time from the RTC SetTime, Set the RTC SetTimer, Set a Timer. As soon as it reaches zero, the Host is powered up. SetPWM (eg. PWM Outputs, can be used eg. for Led backlight) SetOutput, Set the Aux outputs GetKeys, Get the Key States GetEOL, get the Battery Level
As soon as the Microcontroller detects that a key has been pressed, it sends the new key-State automatically to the Host! 4.4 SOFTWARE The Microprocessor has a Software-Half-Duplex UART incorporated which runs at 2400bps with 1 start-bit, 8 databits and 1 stopbit. Via this UART the following commands can be executed: * * * * * * * * 4.4.1 PowerDown GetTime SetTime SetTimer SetPWM (eg. For Led backlight) SetOutput GetKeys GetEOL CPU operation Modes The 32kHz Oscillator is always on for keeping accurate RTC timing The CPU clock is switched off during Idle mode During UART Reception/Transmission the Microcontroller uses the RC Oscillator, which runs at approximately 1MHz 4.4.2 Main loop
PowerOn Reset
Init
Enable Host
RX on UART?
no
Send echo
Valid command?
no
Execute Cmd-Routine
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4.4.3 RTC
IRQ 1Hz
Inc vSec
vSec > 59?
no
Inc vMin
vMin > 59?
no
Inc vHrs
vHrs > 59?
no
Inc vHrs
Timer active?
no
Dec vTimer
VTimer = 0?
no
Enable Host
IRQ_1HZ END
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4.4.4 Command GetTime, 0xA0 Time is counted inside the microcontroller with a resolution of 1sec. The Host can set and read the time.
TX RX Start 10000000 Cmd 10100000 Echo 10100000 Hour 000ooooo Minutes 00oooooo Seconds 00oooooo
Subroutine GetTime(void);
GetTime
Disable Interrupt
Send Time to UART
Enable Interrupt
GetTime_End
4.4.5
Command SetTime, 0xA1 Time is counted inside the microcontroller with a resolution of 1sec. The Host can set and read the time.
TX RX Start 10000000 Cmd 10100001 Echo 10100001 Hour 000ooooo Minutes 00oooooo Seconds 00oooooo
Subroutine SetTime(void);
SetTime
Disable Interrupt
Get Time from UART
Enable Interrupt
SetTime_End
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4.4.6 Command SetTimer, 0xA2 Before sending the Power-Down request to switch itself off, the Host can load the timer with a value between 1 and 255 seconds (0 is off). As soon as the timer reaches zero, the Microcontroller will start the Power-up sequence for the Host.
TX RX Start 10000000 Cmd 10100010 Echo 10100010 Timer Sec oooooooo
Subroutine SetTimer(void);
SetTimer
Get Timer value
SetTimer_End
4.4.7
Command DisablePower, 0x80 Power down the Host.
TX RX Start 10000000 Cmd 10000000 Echo 10000000
Subroutine DisablePower(void) ;
DisablePower
Disable 32kHz Output
Set TX-Pin to 0
Disable Power-Pin
DisablePower_End
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4.4.8 Command EnablePower, 0x81 Power up the Host. This command cannot be used in normal operation. Power-up is only executed, if Timer reaches 0 or an external key has been pressed.
TX RX Start 10000000 Cmd 10000001 Echo 10000001
Subroutine EnablePower(void) ;
EnablePower
Enable Power-Pin
Set TX-Pin to idle
Enable 32kHz Output
EnablePower_End
4.4.9
Command SetPWM1, 0x82 Sets the PWM output. 0 is off. Can be used for controlling for example a Led-Backlight.
TX RX Start 10000000 Cmd 10000010 Echo 10000010 PWM Val. oooooooo
4.4.10 Command SetPWM2, 0x83 Sets the PWM output. 0 is off. Can be used for controlling for example a Led-Backlight.
TX RX Start 10000000 Cmd 10000011 Echo 10000011 PWM Val. oooooooo
4.4.11 Command SetOutputs, 0x84 Set the Outputs.
TX RX Start 10000000 Cmd Echo 10000100 10000100 PWM Val. xxxxoooo
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Subroutine SetOutputs(void) ;
SetOutputs
Get value from UART
Set Outputs
SetOutputs_End
4.4.12 Command GetKeys, 0x90 Gets the state of the keys.
TX RX Start 10000000 Cmd 10010000 Echo 10010000 Key State iiiiiiii
As soon as a key is pressed, the Host is Powered up (if it was down) and the 2nd part of the message is send to the host automatically:
Command TX RX 10010000 Key State iiiiiiii
Subroutine GetKeys(void) ;
GetKeys
Call Enable_Power
Send Key State
GetKeys_End
4.4.13 Command GetSVLD, 0x92 Start a measurement of the Supply Voltage and return the result. 0x3f means, that there has an error occurred during measurement..
TX RX Start 10000000 Cmd 10010010 Echo 10010010 Key State iiiiiiii
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Subroutine GetSVLD(void) ;
GetSVLD
Start SVLD Measurement
Send SVLD value to UART
GetSVLD_End
4.5 HOST APPLICATION For testing the Microcontroller software, a MS-Windows based utility has been developed, which allows to send/receive the Host-Commands via serial COM-Ports. USB to RS232 converters are also supported. 4.5.1 Setup First you have to select the Com-Port you want to use. The Hardware has to be connected to the corresponding Com-Port by a 9pol serial cable. Wiring is 1:1
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4.5.2 Commands Here you can send the different commands. Please note, that after sending the Powerdown command, the chip will no longer respond to serial-commands until you press one of the keys connected to the chip or the Timer in the micro controller has been active and reached 0.
EM Microelectronic-Marin SA cannot assume responsibility for use of any circuitry described other than circuitry entirely embodied in an EM Microelectronic-Marin SA product. EM Microelectronic-Marin SA reserves the right to change the circuitry and specifications without notice at any time. You are strongly urged to ensure that the information given has not been superseded by a more up-to-date version. (c) EM Microelectronic-Marin SA, 11/04, Rev. A
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