k 4 f a mil y pr o du c t bri e f de s c r i pti o n the pd78 4 2x x d e vices a r e h i ghly in t e g rate d m e m bers o f nec s k4 f a m i l y of 1 6 - b i t m i c r o c o n t rol l ers wh o s e e xpand e d m e m o r y and higher per f o r m ance pro v i de an up w a r d m ig r ation path f or n e c s 8-bit k 0 m icrocont r o ller s . w ith the same pe r iph e r als and instruction se t , a nd a n a ddress space e xpanded to 1 m , the p d7842xx ma k e s it easy to add f eatures to a n y e xis t i n g k 0 desig n . the m ini m um instruction e x e c u t i o n t i me is r e duced f rom 0 . 4 s t o 0.1 6 s , and ra m / r o m options are increased t o al l o w up t o 256k r om and 12k ram o n ch i p . d u al os c i llator s , 1.8- t o 5.5- v o l t operation, and p o werful p o wer-s a ving m odes c o mb i ne t o m a k e this f a m ily ide a l i n consu m er electronics a p plications requi r ing hi g h i n t egra t i o n a nd v e r y lo w cost. the p d78 4 2x x is s u ppo r t ed b y an e x tensi v e t o ol c h a in t h a t includ e s a so f t w are simul a t o r , c co m pile r , re l oca t abl e assemble r , scree n de b u g ger a nd i n- c i r c u i t emu l a t o r . t hese t o o ls are co m pati b le througho u t nec s k s e ries? produc t li n e . b l o ck di a gr a m 97yl-0266c (10/97) reset hardware multiply and divide system registers ?pc ?psw ?stack pointer cpu and macro control alu external memory interface programmable interrupts clocks and system control system control clock output subsystem oscillator main oscillator 2-channel, 8-bit d/a converter av ref1 av ss si0 so0 sck0 rxd1/si1 txd1/so1 asck1/ sck1 ti00 ti01 ti1 to1 ti2 to2 ti5/to5 ti6/to6 ti7/to7 ti8/to8 to00 serial channel ram 3.5k - 12k (64) 8-bit general-purpose registers cpu core ports 86/68 i/o pins 78422x missing ports 8,9,10 ano0 - ano1 rtp0 - rtp7 av ref0 8-channel, 8-bit a/d converter av ss av dd ani0 - ani7 x1 x2 xt1 xt2 pcl v dd v ss ic rd wr astb wait real-time output port tone output p00 - p06 p130 - p131 ?. intp0- intp6 a0-a7 a8-a15 a16-a19 ad0- ad7 memory buz rom 96k - 256k timers and counters serial channels timer/event counters 16-bit timer/event counter 8-bit timer/event counters 1 through 6 timers watchdog real-time clock uart/ioe1 uart brg rxd2/si2 txd2/so2 asck2/ sck1 uart/ioe2 uart brg pd/7842xx 1 6 - bi t g e n e r a l -p u rp o s e m i c r o c o n t r o ll e r s m ar c h 19 9 8
specifications ? clock frequency: up to 12.5 mhz ? performance: 160 m s minimum instruction execution time ? operating voltage: 1.8 to 5.5 volts ? operating temperature: C40 to +85c ? 0.35-micron cmos process technology ? power consumption ? 24 mw (normal mode) ? 9 mw (halt mode) ? 0.0005 mw (stop mode) ? packages ? 80-pin qfp (14 x 14 mm or 12 x 12 mm) ? 100-pin qfp (14 x 20 mm or 14 x 14 mm) features ? architecture ? 16-bit cpu ? bit, byte, or word instruction set operation ? 160 ns minimum instruction execution time ? eight register banks; eight 8-bit registers per bank ? memory ? 1m linear address space ? 96k to 256k internal rom ? 128k or 256k flash version ? fully static 3.5k to 12k internal ram ? clock sources ? up to 12.5 mhz main clock ? 32 khz subsystem clock ? interrupts ? one internal and one external non-maskable interrupt ? eight external maskable interrupts ? 19 internal maskable interrupts ? automatic release of halt and stop modes ? peripherals ? 68 and 86 general-purpose i/o pins ? one 16-bit timer/event counter ? up to six 8-bit timer/counters ? one 0.5-second real-time clock ? one watchdog/interval timer ? three serial channels C two uart/synchronous channels with baud rate generators C one synchronous serial channel ? eight - channel 8 - bit a/d converter: 15 m sconversiontime
? two-channel 8-bit d/a converter: 10 m s settling time ? one 8-bit real-time output port ? clock and buzzer (tone) output ? eight inputs to detect and release halt and stop modes ? external bus interface: up to 1m external address space note: target specification table 1. power-saving features voltage mode and typical power at 12.5 mhz normal mode: chip 100% on (main system clock on) halt mode: cpu clock off and main clock on stop mode: main clock off note 32 khz subsystem clock on no 32 khz subsystem clock 5 volts 100 mw 40 mw 0.06 mw 0.05 mw 3 volts 24 mw 9 mw 0.012 mw 0.006 mw table 2. ordering information ( add y to end of part number to order i 2 c tm version ) part number internal rom internal ram m pd78214gc/gf 96k mask rom 3.5k m pd78215gc/gf 128k mask rom 5k pd78216gc/gf 128k mask rom 8k pd78217gc/gf 192k mask rom 12k pd78218gc/gf 256k mask rom 12k pd78f4216gc/gf 128k flash memory 8k m pd78f4218gc/gf 256k flash memory 12k m pd784224gc/gk 96k mask rom 3.5k m pd78225gc/gk 128k mask rom 4.3k m PD78F4225GC/gk 128k flash memory 4.3k
in north america: no part of this document may be copied or reproduced in any form or by any means without the prior written consent of nec electronics inc. (necel). the information in this document is subject to change without notice. all devices sold by necel are covered by the provisions appearing in necel terms and conditions of sales only. including the limitation of liability, warranty, and patent provisions. necel makes no warranty, express, statutory, implied or by description, regarding information set forth herein or regarding the freedom of the described devices from patent infringement. necel assumes no responsibility for any errors that may appear in this document. necel makes no commitments to update or to keep current information contained in this document. the devices listed in this document are not suitable for use in applications such as, but not limited to, aircraft control systems, aerospace equipment, submarine cables, nuclear reactor control systems, and life support systems. standard quality grade devices are recommended for computers, office equipment, communication equipment, test and measurement equipment, machine tools, industrial robots, audio and visual equipment, and other consumer products. for automotive and transportation equipment, traffic control systems, anti-disaster and anti-crime systems, it is recommended that the customer contact the responsible necel salesperson to determine the reliability requirements for any such application and any cost adder. necel does not recommend or approve use of any of its products in life support devices or systems or for literature, call 1-800-366-9782 7 a.m. to 6 p.m. pacific time or fax your request to 1-800-729-9288 or visit our web site at www.nec.com nec electronics inc. corporate headquarters 2880 scott boulevard santa clara, ca 95050-2554 tel 408-588-6000 k series is either a trademark or registered trademark of nec electronics inc. in the united states and/or other countries. i 2 c is a trademark of nv philips.
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