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r03ds0053ej0301 rev.3.01 page 1 of 11 mar 01, 2013 target specification datasheet rna55a125flp cmos system reset ic description rna55a125 is microcomputer and system reset signal to be generated. detection voltage is set with external resistors can be, the internal reference voltage is 1.25 v. although the method is used to generate an internal counter when reset delay time, can freely set by an external resistor. features ? reset detection voltage: 1.25 v ? 2.0% ? delay time: 200 ms (r osc = 1 m ? setting) ? circuit current: 10 ? a ? open drain output ? wide supply voltage range: 1.8 v to 5.5 v ordering information part name package type package code package abbreviation taping abbreviation (quantity) surface treatment rna55a125flph1 mpak-5 plsp0005zb-a lp h (3,000 pcs/reel) 1 (sn/bi) application ? power supply voltage monitoring for microprocessors ? computers and notebook computers ? digital still camera, digital video camera, and pda ? industrial equipment block diagram comp vdd 4 out 5 delay vin 3 gnd 2 osc 1 r03ds0053ej0301 rev.3.01 mar 01, 2013
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 2 of 11 mar 01, 2013 pin arrangement 1 2 3 osc gnd vin out vdd 5 4 (top view) marking indication 3 mpak-5 u type code rna55a125flp (example) control code control code starting in january "a", "b", "c", "d ", "e", "f", "g", "h", "j", "k", "l", "m" pin description pin no. pin name i/o function 1 osc ? ? connect a resistor for setting the delay time. ? 200 ms is obtained is 1 m ? . ? range of resistance: 500(k ? ) to 2(m ? ) 2 gnd ? ? ground 3 vin i ? input pin for reset detection. ? supply voltage applied to resistor divider. 4 vdd ? ? sorcing power-supply voltage. 5 out o ? open drain output ? low will be output when the reset detection ? range pull-up resistance: 2.2(k ? ) to 100(k ? )
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 3 of 11 mar 01, 2013 operational waveform diagram output state td input voltage td = delay time setting range 100 ms to 400 ms (standard setting: 200 ms) undefined output td v s +v s v s +v s v s absolute maximum ratings item symbol ratings unit supply voltage v dd 6.5 v output voltage (open-drain type) v out ?0.3 to +6.5 v input voltage v in ?0.3 to v dd v output current i out 6 ma power dissipation pd 120 (ta = 25c) mw operating temperature topr ?40 to +85 c storage temperature tstg ?40 to +125 c electrical characteristics (v dd = 3.3 v, ta = 25c, unless otherwise noted) item symbol min typ max unit test conditions threshold operating voltage v oul ? ? 0.9 v r l = 2.2 (k ? ), v out < 0.4 v circuit current i dd ? 10 20 ? a v dd = 5.0 v, v out = hi (v dd ) detecting voltage v s 1.225 1.25 1.275 v detecting voltage temperature coefficient v s / ? t ? ? 100 ? ppm/c hysteresis voltage v hys 3 5 8 % output low voltage v ol ? 0.2 0.4 v i out = 4 ma, v dd = 3.5 v input leakage current iin ?10 0 10 na output leakage current i lk ? ? 30 na v out = v dd = 5.0 v delay time td 140 200 260 ms r osc = 1 m ?
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 4 of 11 mar 01, 2013 test circuit threshold operating voltage v oul detecting voltage & hysteresis v s & v hys minimum operating voltage v dd v out 0 v out = v dd v out < 0.4 v v dd = 0 to 1 v r l = 2.2 k osc gnd vin out vdd 1 2 3 5 4 r l = 1 m v s : detection voltage v th : release voltage v hys v in v out v s v th osc gnd vin out vdd 1 2 3 5 4 v in = 0 v 3.3 v 0 v v dd = 3.3 v r l = 2.2 k r l = 1 m circuit current i dd output low voltage v o v dd = 5 v osc gnd vin out vdd 5 4 i dd a 1 2 3 r l = 1 m v dd = 3.5 v osc gnd vin out vdd 5 4 v o = 0.4 v i ol a 1 2 3 r l = 1 m
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 5 of 11 mar 01, 2013 input leakage current iin output leakage current i lk v dd = 3.3 v osc gnd vin out vdd 1 2 3 5 4 v in = 3.3 v i in a r l = 1 m osc gnd vin out vdd 1 2 3 5 4 v dd = 5 v i oleak a r l = 1 m delay time td v dd = 3.3 v r l = 2.2 k v hys td 3.3 v 50% 0 v t v in v o osc gnd vin out vdd 1 2 3 5 4 r osc = 500 k to 2 m 3.3 v 0 v
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 6 of 11 mar 01, 2013 characteristic curves delay time vs. resistance delay time vs. supply voltage 0 r osc () circuit current vs. supply voltage 0 i dd (a) 500 k 1 m 1.5 m 2.5 m 2 m 20 15 10 5 detection voltage vs. ambient temperature detection voltage vs. supply voltage delay time vs. ambient temperature 1.23 1.24 1.25 1.26 1.27 01234567 v dd (v) 01234567 v dd (v) ta (c) v s (v) 1.23 1.24 1.25 1.26 1.27 v s (v) 0 100 200 300 400 td (ms) ?50 0 25 75 ?25 50 100 0 100 200 300 400 td (ms) 0 100 200 300 600 500 400 td (ms) ta (c) ?50 0 25 75 ?25 50 100 v dd = 3.3 v, r osc = 1 m ta = 25c 0 v dd (v) 234 6 5 ta = 25c, v dd = 3.3 v ta = 25c r osc = 2 m r osc = 1 m r osc = 500 k
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 7 of 11 mar 01, 2013 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 i o (ma) 20 0406080100 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 threshold operating voltage characteristics output low voltage characteristics v dd (v) v o (v) v o (v) ta = 25c, v dd = 3.5 v ta = 25c r l = 2.2 k r l = 100 k r l = 22 k
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 8 of 11 mar 01, 2013 block diagram vref comp1 r2 r1 r l rna55a125flp vdd gnd osc vo delay time typ value setting range 100 ms to 400ms r osc ? delay time adjustment resistor r osc setting range : 500 (k) to 2 (m) vin ? + 4 2 1 5 3 delay circuit oscillator power detection voltage power setting information [way of thinking] detection voltage input is v s detection voltage power is v det v det = v s ? (r1 + r2) / r2 can write. in addition, v s = 1.25 v it is (typ). v dd vin v o output state v s (detection voltage input) v det (detection voltage power) vref gnd hi low
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 9 of 11 mar 01, 2013 delay time setting information delay circuit of product, using a counter and oscillato r scheme, within setting range, it can be set freely using (r osc ) features an external resistor. 100 ms (minimum setting) 200 ms (standard setting) 400 ms (maximum setting) delay time setting range free brownout vin gnd osc r osc 2 1 v out td (ms) = 200 (ms/m) r osc (m) r osc setting range: 500 (k) to 2 (m) note: external resistor r osc for delay time, please make sure mounting. (terminal is prohibited open osc, vdd short, short for gnd.) input terminal setting vin is, it is assumed that the input divided voltage of v dd is basically. it is also possible to use two independent power supply as shown in the figure below. vref comp1 r2 r1 r l v dd 2 v dd 1 rna55a125flp vdd gnd osc vo delay time typ value setting range 100 ms to 400ms r osc vin ? + 4 2 1 5 3 delay circuit oscillator
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 10 of 11 mar 01, 2013 use a manual reset provided that short-circuit path between vin to gnd term inals as shown below, you form manual reset circuit is possible. (there is a manual reset by applying a voltage of less than vref (1.25 v) to terminal vin.) vref comp1 r2 sw for manual reset r1 r l rna55a125flp vdd gnd osc vo delay time typ value setting range 100 ms to 400ms r osc vin ? + 4 2 1 5 3 delay circuit oscillator power output load since open-drain type, the output terminal without depending on the power supply voltage although you can set the output voltage level h, please observe the following notes. ? should be in the range (1.8 v ~ 5.5 v) value of the supply voltage within the recommended range. in addition, the absolute maximum ratings over 6.5 v, so that i do not even for a moment is applied note. ? for the r l output pull-up resistor, the output current of the l le vel (iout output inflow current) is set as a guideline wish below 4 ma. do not exceed the absolute maximum rating (6 ma) even for a moment also to set. r l vo v cc (1.8 v to 5.5 v) iout 4 m a 5
rna55a125flp target specification r03ds0053ej0301 rev.3.01 page 11 of 11 mar 01, 2013 package dimensions d e a qc aa b xsa a a 2 a 1 m e l h e l 1 l p a 3 ys pattern of terminal position areas s i 1 b 2 e e 1 a a 1 a 2 a 3 b c d e e h e l l 1 l p x y b 2 e 1 i 1 q 1.0 0 1.0 0.35 0.11 2.8 1.5 2.5 0.3 0.1 0.2 min nom dimension in millimeters reference symbol max 1.1 0.25 0.4 0.16 2.95 1.6 0.95 2.8 2.15 0.3 1.4 0.1 1.3 0.5 0.26 3.1 1.8 3.0 0.7 0.5 0.6 0.05 0.05 0.55 0.85 sc-74a 0.015g mass[typ.] mpak-5 / mpak-5v plsp0005zb-a renesas code jeita package code previous code b a-a section c package name mpak-5
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