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rev.3.00 jun 15, 2005 page 1 of 30 ha16117f series cmos watchdog timer rej03f0142-0300 (previous: ade-204-018b) rev.3.00 jun 15, 2005 description the ha16117f series of ics make a micro-processor (mpu) system fail-safe by monitoring its power supply to detect voltage drops, and monitoring a p-run (program running) pulse to detect system crashes. also referred to as watchdog timers, these devices are essential in systems that aim for high levels of crash protection. fabricated by a cmos process, they consume little power and are ideally suited for battery-operated systems. these ics are available in versions for industrial and communications equipment and automotive applications, as well as for consumer products. functions ? ower-on reset sends a res signal to the mpu for a fixed time at power-on ? watchdog timer (wdt) monitors a p-run signal from the mpu and sends the mpu a res signal if p-run departs from a set frequency range ? auto-reset outputs res signals to the mpu at clocked intervals while p-run remains abnormal ? supply voltage supervision outputs a low res signal if the supply voltage (same as the mpu's v cc ) falls below a low threshold level (v tl ). the threshold differs for different ics in the series, allowing designers to choose an ic matching system requirements (see ordering information) features ? low power consumption : operating (acc pin low) = 0.5 mw (typ) : standby (acc pin high) = 0.2 mw (typ) ? watchdog timer on/off control by acc input signal ? independent auto-reset high and low times (t rh and t rl ) ? watchdog monitoring by frequency filtering (independent of duty cycle) ? high-precision low voltage detection ( 2%) ? space- and weight-saving 8-pin sop package ordering information the ha16117f series includes three ics with different low threshold levels (v tl ). type no. low threshold voltage (v tl ) ha16117fpa/fpaj 4.4 v typ ha16117fpb/fpbj 4.2 v typ ha16117fpc/fpcj 4.0 v typ
ha16117f series rev.3.00 jun 15, 2005 page 2 of 30 pin arrangement 8 7 6 5 v cc p-run c f c r 1 2 3 4 tadj acc gnd (top view) res pin description pin no. symbol function 1 v cc power supply voltage input 2 p-run watchdog timer (wdt) input 3 c f connected capacitor c f determines wdt filter characteristic (normal frequency range) 4 c r connected capacitor c r determines t on for power-on reset and t off , t rh , and t rl for auto-reset 5 res reset signal output from wdt and voltage supervision circuits 6 gnd ground 7 acc wdt on/off control input (on when acc is low) 8 tadj * for adjusting t rh and t off (divide v cc to get the adjustment voltage) note: the low-voltage threshold cannot be modified by changing the external resistors connected to the tadj pin.
ha16117f series rev.3.00 jun 15, 2005 page 3 of 30 block diagram 1 6 5 8 2 3 7 ? + 4 ? + 5 v 0.1 v cc gnd c r ta d j r 1 510 k r 2 750 k p-run 0.01 c f acc pulse from i/o port w.d in sw2 1.25 v 2.52 (117fa) 2.36 (117fb) 2.20 (117fc) sw1 comp. comp. to micro- computer res w.d in frequency (hz) duty 50% w.d out w.d out duty (%) duty n% 1/2 frequency divider gnd 1 operating: "low" standby: "high" n f l /2 f h /2 normal range i 2 i 2 adjustment i 1 power-on and auto-reset circuit (*i 1 < i 2 ) (sw1 and sw2 are active high) watchdog filter (f-duty converter) watchdog timer low voltage detector acc voltage function low low voltage detection and wdt low voltage detection mode operating note: the power-on reset circuit operates in both operating and standby modes. standby high the ha16117f consists of a low voltage detector, power-on and auto-reset circuit, and watchdog timer. low voltage detector uses a reference voltage source ( 1.25 v) and high-precision comparator to detect drops in the supply voltage. power-on and auto-reset circuit generates the res waveform, using a multivibrator consisting of a current source i 1 that charges the external capacitor c r , a current source i 2 that discharges c r , and a comparator. watchdog timer reshapes the p-run signal (programming-running pulse) from the mpu to obtain a 50% duty cycle, then converts frequency to duty cycle in the watchdog filter (wd filter). the watchdog filter is a bandpass filter. the duty cycle of the filter output is highest in the normal frequency range of p- run. the watchdog filter output controls i 2 in the multivibrator, the higher the duty cycle of the watchdog filter output, the shorter the time during which i 2 discharges c r . if the duty cycle is high enough then c r is held at a high potential, preventing the multivibrator from firing, and the res output remains high.
ha16117f series rev.3.00 jun 15, 2005 page 4 of 30 absolute maximum ratings (ta = 25 c) ratings item symbol ha16117fpa/fpb/fpc ha16117fpaj/fpbj/fpcj unit power supply voltage v cc ?0.3 to +14 ?0.3 to +14 v p-run input voltage v p v cc v cc v acc input voltage v acc 14 14 v res output current i res 10 10 ma permissible dissipation * 1 p t 300 300 mw operating temperature range topr ?30 to +85 ?40 to +85 c storage temperature tstg ?55 to +125 ?55 to +125 c note: 1. this is the value when mounted on a glass epoxy substrate with 30% wiring density, up to an ambient temperature of 83 c. above that temperature, derate by 7.14 mw/ c. 40mm substrate 0.8 mm ceramic o r 1.5 mm epoxy 400 300 200 100 0 30 20 0 20 40 ambient operating temperature range ta ( c) 60 80 85 c 7.14 mw/ c (30% wiring density) 83 c 100 permissible dissipation p t (mw)
ha16117f series rev.3.00 jun 15, 2005 page 5 of 30 electrical characteristics (v cc = 5 v, ta = 25 c, c f = 0.01 f, c r = 0.1 f, r 1 = 510 k ? , r 2 = 750 k ? ) item symbol min typ max unit test conditions i cc1 ? 100 ? a v acc = 0 v, f p-run = 100 hz operating supply current i cc2 ? 200 600 a v acc = 0 v, f p-run = 20 khz general standby supply current i stby ? 43 100 a v acc = 12 v ha16117fpa/fpaj 4.3 4.4 4.5 v ha16117fpb/fpbj 4.1 4.2 4.3 v low voltage threshold level ha16117fpc/fpcj v tl 3.9 4.0 4.1 v when v cc drops low voltage detector hysteresis width v hys 50 100 150 mv low input voltage v il1 ? ? 0.8 v acc high input voltage v ih1 2.0 ? ? v low input voltage v il2 ? ? 0.8 v p-run input high input voltage v ih2 2.0 ? ? v power-on reset time t on 24 40 56 ms reset-clock off time t off * 1 78 130 182 ms reset low time t rl 12 20 28 ms reset high time t rh 36 60 84 ms p-run pin = 0 v low setup time t sl 1 ? ? ms wdt high setup time t sh ? ? 1 ms res low voltage v ol ? ? 0.4 v i ol = 1 ma res high voltage v oh ? v cc ? v open res output reset function starting voltage v res ? 0.8 1.4 v constant range constant range of r 1 and r 2 k 0.55 0.6 0.8 ? k =r 2 / (r 1 + r 2 ) operating supply voltage range v ccrng v tl ? 6.0 v note: 1. reset-clock off time t off is provided a shown in the under figure. t off p-run res f = 500 hz, duty = 50%
ha16117f series rev.3.00 jun 15, 2005 page 6 of 30 timing waveforms and functional description v tl v cc p-run t on t off t rh t on t rl t on t on crash watchdog function on res (v acc = "low") watchdog function off res (v acc = "high") figure 1 timing waveforms watchdog on/off function a feature of the ha16117f is that watchdog supervision can be switched on and off. when the watchdog function is switched on, both the supply voltage and p-run input are monitored to detect abnormal conditions. when the watchdog function is switched off (standby mode), only the supply voltage is monitored. watchdog supervision is switched on and off by the input at the acc pin (pin 7): supervision is on when acc is low, and off when acc is high. many mpus have a standby mode in which the cpu stops running but memory contents are retained. in standby mode, program execution halts and i/o ports go to the high-impedan ce state, so there is no need for the watchdog timer to supervise pulse output from an i/o port to detect abnormal conditions. power can be saved by placing both the mpu and ha16117f in standby mode at the same time. the ha16117f is designed to draw a typical standby current i stby of only 43 a typ when the watchdog function is switched off. acc pin (pin 7) and res output when the mpu returns from standby mode to normal operation it generally takes 10 to 200 ms for the clock oscillator in the mpu to stabilize. the res signal is not output during this setup time. after the setup time (t sl ) has elapsed, res is output if the p-run signal from the mpu is still abnormal. t sl t sh adjust according to mpu's setup time res (due to mpu crash) a cc pin figure 2 acc pin and res output
ha16117f series rev.3.00 jun 15, 2005 page 7 of 30 internal operation and usage notes figure 3 shows an equivalent circuit of the watchdog timer block with a v cc pin level of 5 v and acc pin level of 0 v, and the following pages show internal operation timing charts for different p-run frequencies. (descriptions apply to conditions c f = 0.01 f, c r = 0.1 f, r 2 /(r 1 + r 2 ) = 0.6.) operation the power-on and auto-reset circuit is a multivibrator with timing controlled by c r charge current i 1 and discharge current i 2 . as i 1 : i 2 3 : 1 (typ design value), when the (wd) (watchdog filter circuit output) on-duty is 25% or above, the c r pin potential does not fall below 1.6 v. therefore, (c) in the figure below is fixed low, and res is not output. the (wd) on-duty varies according to the p-run frequency. if the frequency is lower or higher than the design value, the (wd) on-duty decreases, and at 25% or below, res is output. refer to the timing charts on the following pages for an explanation of the operation of the watchdog filter. usage notes ? when the p-run frequency reaches 20 khz or above, t off is short (see the timing charts on the following pages). this must be borne in mind in the design stage. ? if the p-run frequency fluctuates, res may also be output within the normal detection set frequency (see the timing charts on the following pages). ? detection frequencies f h and f l described in the data book are typ values, and a certain amount of dispersion can be expected. a margin of 30% or more should be allowed for in the design. ? ? ? res q q figure 3 watchdog timer evaliation circuit
ha16117f series rev.3.00 jun 15, 2005 page 8 of 30 1. when p-run signal is not input h l h l h l h l h l h l h l h l 0 v 1.6 v 3.2 v 5 v 0 v 0.9 v 3.6 v 5 v p-run q a c f wd c r b c 20 ms 60 ms the watchdog filter circuit output (wd) is fixed low, so the res signal is output as shown in the figure below in accordance with power-on and auto-reset circuit c r charge/discharge. res q
ha16117f series rev.3.00 jun 15, 2005 page 9 of 30 2. with a low-frequency p-run signal ( 13 hz to 26 hz) h l h l h l h l h l h l h l h l 0 v 1.6 v 3.2 v 5 v 0 v 0.9 v 3.6 v 5 v p-run 40 ms (25 hz) 2t t 1 5 s t 2 33 ms q a c f wd c r b c when f p-run is 13 hz to 26 hz, the wd duty (d = 100 t 2 /2t) is 25% to 50%. when the wd duty is 25% or above, multivibrator (power-on and auto-reset circuit) oscillation stops. as a result, the res signal is fixed high. 60 ms 20 ms res q
ha16117f series rev.3.00 jun 15, 2005 page 10 of 30 3. with a 10 khz p-run signal h l h l h l h l h l h l h l h l 0 v 1.6 v 3.2 v 5 v 0 v 0.9 v 3.6 v 5 v p-run 100 s (10 khz) 2t t 1 5 s q a c f wd c r b c when f p-run is 10 khz, the wd duty (d = 100 (t ? t 2 )/2t) is 48%. as the duty is above 25%, the multivibrator (power-on and auto-reset circuit) does not oscillate. the res signal remains high. res q
ha16117f series rev.3.00 jun 15, 2005 page 11 of 30 4. with a 150 khz p-run signal h l p-run q a c f wd c r b c h 2t 6.6 s (150 khz) t 1 5 s l h l h l h l h l h l h l 5 v 5 v 3.2 v 1.6 v 0 v 0 v 0.9 v 3.6 v when f p-run is 100 khz or above, the wd duty (d = 100 (t ? t 2 )/2t) is 25% or below. therefore, c r is discharged, and the res signal is output at the instant that the pin potential falls to the comparator circuit threshold value (v tl = 1.6 v). res q
ha16117f series rev.3.00 jun 15, 2005 page 12 of 30 5. t off when p-run signal 90 khz t off 26 ms h l h l h 0 v 1.6 v 3.2 v 5 v 0 v 0.9 v 3.6 v 5 v l h l h l h l h l h l p-run 50 ms q a c f wd c r b c 2.3 v f p_run 90 khz when the p-run frequency is high, even though within specification, the c r pin potential falls. if the p-run frequency falls sharply at this time, t off may be short. with values of c f = 0.01 f and c r = 0.1 f, the c r pin potential will not fall as long as the p-run frequency is 20 khz or below. res q
ha16117f series rev.3.00 jun 15, 2005 page 13 of 30 6. when p-run frequency fluctuates (1) h l h l h l h l h l h l h l h l 0 v 1.6 v 3.2 v 5 v 0 v 0.9 v 3.6 v 5 v p-run 28 ms q a c f wd c r b c 20 ms 2 ms if there is a double-pulse in p-run, the wd filter duty will be decreased and res will be output, as shown in the figure below, for example. in this case, the condition for non-output of the res signal is a value of 3 or less for the ratio of p-run pulse interval minimum value to maximum value (when f p-run 20 khz). this is because the c r pin charge/discharge current ratio is 3. res q
ha16117f series rev.3.00 jun 15, 2005 page 14 of 30 7. when p-run frequency fluctuates (2) h l h l h l h l h l h l h l h l 0 v 1.6 v 3.2 v 5 v 0 v 0.9 v 3.6 v 5 v p-run 8 ms 22 ms q a c f wd c r b c if there is a double-pulse in p-run, res will not be output as long as the ratio of p-run pulse interval minimum value to maximum value is 3 or less. the timing chart for a p-run minimum interval of 8 ms and maximum interval of 22 ms is shown below. res q
ha16117f series rev.3.00 jun 15, 2005 page 15 of 30 8. summary of cases where p-run frequency fluctuates when f p-run 20 khz, t off is frequency-dependent, so care is required when making the p-run setting (see figure below). 1 m 100 k 10 k 1 k 100 10 1 5 4 3 2 1 0 0 50 m 100 m 3 2 m 1 t off (s) 1 k 3 k 10 k p-run frequency (hz) 30 k 50 k 70 k 100 k 7 k 5 k 050 p-run pulse duty d (%) 100 p-run frequency f p-run (hz) ? p-run normal detection region, duty dependency ? f p-run dependency of v cr , t off , m note: 1 note: 2. this is the region when f p-run is constant. if f p-run fluctuates within the normal detection region, the following applies: normal detection is performed when the condition f p-run h /f p-run l < m is satisfied. if there is a double-pulse in p-run, res may be output if the double-pulse has multiple frequency components. if the p-run frequency fluctuates, refer to the following when making the p-run setting. cr voltage v cr (v) multivibrator threshold voltage (1.6 v) normal detection region* 2
ha16117f series rev.3.00 jun 15, 2005 page 16 of 30 setting of res timing and watchdog frequency range different mpus have different res timing requirements. the minimum reset time (t on ) required at power-on (rise of v cc ) is 20 ms for some mpus and 100 ms for others. res timing waveform parameters must be selected accordin g to the mpu. with the ha16117f the timing of the res output and the watchdog frequency range can both be set by external constants (c f , c r , and k). parameters item symbol cr (pin 4) cf (pin 3) k (pin 8) * 1 power-on reset time t on reset-clock off time t off s * 2 reset low time t rl reset high time t rh watchdog frequency high f h watchdog frequency low f l notes: 1. k = r 2 / (r 1 + r 2 ) 2. variability of t off increases with increasing c f . the variability ? t off is approximately 3.3 (m ? ) c f ( f), so c f 0.01 ( f) is recommended. 3. external constants should be selected with reference to the formulas in tables 1 and 2. table 1 calculation of res output timing item formula notes t on (ms) 400 ( ? ) c r ( f) t off (ms) 1.99 t rh (ms) t on and t off can be set independently t rl (ms) 0.5 t on (ms) t rl and t rh can be set independently t rh (ms) 1.6 (v) k 31 ( a) 15.8 ( a) c r ( f) 10 3 t sl (ms) t off (ms) table 2 calculation of watchdog frequency range item formula f h (mhz) 1 500 ( ) c f ( f) t rh (ms) t rl (ms) t rh (ms) + t rl (ms) f l (hz) 1 1.7 (m ) c f ( f) t rl (ms) t rh (ms) + t rl (ms) 1 t off (ms) 10 3 or whichever is larger
ha16117f series rev.3.00 jun 15, 2005 page 17 of 30 selection of external constants if the reset duration necessary for the mpu to operate reliably at power-on is known, there is a simple procedure for selecting external constants, starting from the power-on reset time (t on ). start set power-on reset time t on set reset high time t rh select external constant c f check watchdog frequency range f h and f l external constant values ? decide reset low time (t rl ) ? select external constant c r ? decide reset-clock off time (t off ) ? select external constants r 1 and r 2 figure 4 procedure for selecting external constants application example sw c f 0.01 f r 1 510 k ? r 2 750 k ? c r 0.1 f battery microprocessor system 5 v regulator v cc v cc tadj p-run ha16117f acc c f gnd c r port gnd res res
ha16117f series rev.3.00 jun 15, 2005 page 18 of 30 operating characteristics and test circuits 5 v 0 v 5 v 0 v p-run 5 v v tl 0 v 5 v 0 v v cc 5 v 0 v 50 ms/div time 50 ms/div time 20 ms/div time t on sw,off t off t rl t rh c r power-on reset time (t on ) reset-clock off time (t off ) res and c r waveforms at detect abnormal conditions circuit for measuring t on 0.01 0.1 oscilloscope 510 k 750 k v cc tadj p-run acc c f gnd c r 5v 0v circuit for measuring res and c r waveforms 0.01 0.1 oscilloscope oscilloscope 510 k 750 k v cc tadj p-run acc c f gnd c r circuit for measuring t off 0.01 0.1 oscilloscope 510 k 750 k 50? v cc tadj p-run acc c f gnd c r 5v 0v f = 500hz duty 50% 5 v 5v res res res res res res
ha16117f series rev.3.00 jun 15, 2005 page 19 of 30 5.0 low voltage threshold v tl (v) ? 30 0 50 85 4.5 4.0 3.5 ( ? 50ppm/ c) ha16117fa v -ta tl 150 ? 30 0 50 85 100 50 0 ha16117fa v -ta hys threshold hysteresis width v hys (mv) threshold hysteresis width vs. ambient temperature 0.01 0.1 5 v regulato r 5 v regulato r 12 v 510 k 750 k v cc v cc tadj p-run acc c f gnd c r 0.01 0.1 12v 510k 750k v cc v cc tadj p-run acc c f gnd c r oscilloscope oscilloscope test circuit test circuit low voltage threshold vs. ambient temperature ambient temperature ta ( c) ambient temperature ta ( c) res res
ha16117f series rev.3.00 jun 15, 2005 page 20 of 30 500 operating supply current i cc (a) 100 10 100 1 k 10 k 20 k p-run input frequency f p-run (hz) ta = 25 c operating supply current vs. p-run input frequency test circuit 0.01 0.1 510 k 750 k v cc v cc pin 5 v i cc tadj p-run acc c f 0 v to 5 v gnd c r pulse genelator a res
ha16117f series rev.3.00 jun 15, 2005 page 21 of 30 200 standby supply current vs. supply voltage standby supply current i stby (a) supply current i stby , i cc (a) 100 0 5 7 supply voltage v cc (v) 300 supply current vs. ambient temperature ? 30 0 50 85 200 100 0 ambient temperature ta ( c) i stby ta = 25 c f = 20 khz i cc f = 100 hz i cc test circuit 0.01 0.1 510 k 750 k 12 v v cc v cc i stby tadj p-run acc c f gnd c r a v res
ha16117f series rev.3.00 jun 15, 2005 page 22 of 30 0.4 res low voltage vs. res pin sink current res low voltage v ol (v) res low voltage v ol (v) 0 0.5 m 1 m 1.5 m 0.2 0.1 res pin sink current i ol (a) 0.3 0.3 30 0 50 85 0 ambient temperature ta ( c) 0.1 0.2 i ol = 1ma res low voltage vs. ambient temperature (r on 160 ) test circuit 0.01 75 k 51 k i o sink 5 v v cc tadj p-run acc c f gnd c r v res
ha16117f series rev.3.00 jun 15, 2005 page 23 of 30 5 res high voltage vs. res pin source current res high voltage v oh (v) 0 res pin source current i o source (a) 4 3 500 ta = 25 c test circuit 0.01 0.1 75 k 51 k i o sink 5v v cc tadj p-run acc c f gnd c r v res
ha16117f series rev.3.00 jun 15, 2005 page 24 of 30 1 100 m 10 m 1 m 0.01 0.1 1.0 0.01 0.1 1.0 external capacitance c r (f) external capacitance c r (f) power-on reset time vs. c r capacitance res output timing vs. c r capacitance power-on reset time t on (sec) 1 100 m 10 m 1 m res output timing t rh , t rl (sec) t rh t rl ta = 25 c ta = 25 c test circuit 0.01 c r t on 750 k 510 k 5v v cc tadj p-run acc c f gnd c r v cc oscilloscope test circuit oscilloscope 0.01 c r t rh 750 k 510 k 5 v v cc tadj p-run acc c f gnd c r 5 v 0 v res res res res
ha16117f series rev.3.00 jun 15, 2005 page 25 of 30 1000 100 10 1 0.01 0.01 0.1 1.0 0.01 0.1 1.0 external capacitance c r (f) high setup time vs. c r capacitance high setup time t sh (sec) 10 1 100 m 10 m external capacitance c r (f) low setup time vs. c r capacitance low setup time t sl (sec) ta = 25 c ta = 25 c test circuit c r t sh 750 k 510 k 5 v v cc tadj p-run acc c f gnd c r oscilloscope test circuit oscilloscope 0.01 c r t sl 750 k 510 k 5 v v cc tadj p-run acc c f gnd c r 0 v 15 v 0v res res res res
ha16117f series rev.3.00 jun 15, 2005 page 26 of 30 reset high time vs. k (tadj constant) reset high time t rh (sec) 100 m 0.56 0.6 0.7 0.8 10 m tadj constant k 1 m duty-cycle dependence of p-run normal frequency range p-run input frequency f p-run (hz) 0 p-run input pulse duty cycle (%) 100 k 10 k 1 k 100 10 1 50 100 mpu system abnormal mpu system abnormal mpu system normal abnormal if duty cycle is 0% abnormal if duty cycle is 100% test circuit notes: 1. 2. normal detection is assumed when res is not output. the figure at left is for a constant p-run frequency. see "8. summary of cases where p-run frequency fluctuates" for cases where the frequency fluctuates. 0.01 0.1 0.01 0.1 r 2 r 1 5 v v cc tadj p-run acc c f gnd c r oscilloscope test circuit oscilloscope k = r 1 + r 2 r 2 750 r 510 r v cc tadj p-run acc c f 5 v 5 v 0 v gnd c r pulse generator res res
ha16117f series rev.3.00 jun 15, 2005 page 27 of 30 1 m p-run input frequency vs. k (tadj constant) p-run high threshold frequency vs. c f capacitance p-run input frequency f p-run (hz) 0.55 tadj constant k 100 k 10 k 1 k 100 10 1 0.7 0.8 0.6 ta = 25 c k= r 2 r 1 + r 2 500 p 10 k 1000 p 0.01 0.03 100 k 1 m 10 m p-run high threshold frequency f h (hz) external capacitance c f (f) ta = 25 c mpu system abnormal mpu system normal mpu system abnormal mpu system normal k = r 1 + r 2 r 2 0.01 duty 50% 0 v to 5 v duty 50% 0.1 r 2 r 1 v cc tadj p-run acc c f 5 v 5v 0v gnd c r pulse generator c f c r 510 k 750 k v cc tadj p-run acc c f 5 v gnd c r test circuit oscilloscope pulse generator test circuit oscilloscope res res notes: 1. 2. normal detection is assumed when res is not output. the figure at left is for a constant p-run frequency. notes: 1. 2. normal detection is assumed when res is not output. the figure at left is for a constant p-run frequency.
ha16117f series rev.3.00 jun 15, 2005 page 28 of 30 500 p 1 1000 p 0.01 0.03 10 100 1 k ta = 25 c p-run low threshold frequency f l (hz) external capacitance c f (f) c r = 0.01 f c r = 0.1 f c r = 1.0 f 1 m 0 ambient temperature ta ( c) 100 k 10 k 1 k 100 10 1 50 85 ? 30 f h f l p-run low threshold frequency vs. c f capacitance p-run input frequency vs. ambient temperature pulse generator test circuit oscilloscope pulse generator test circuit oscilloscope abnormal normal p-run input frequency f p-run (hz) p-run abnormal p-run abnormal p-run normal c f c r 75 k 51 k v cc tadj p-run acc c f 5 v gnd c r 0.01 duty 50% 0.1 750 k 510 k v cc tadj p-run acc c f 5 v gnd c r res res notes: 1. 2. normal detection is assumed when res is not output. the figure at left is for a constant p-run frequency. notes: 1. 2. normal detection is assumed when res is not output. the figure at left is for a constant p-run frequency.
ha16117f series rev.3.00 jun 15, 2005 page 29 of 30 100 ? 30 0 0 50 100 50 power-on reset time vs. ambient temperature t rh and t rl vs. ambient temperature power-on reset time vs. ambient temperature power-on reset time t on (ms) 100 70 50 30 0 ? 35 0 50 85 t on t rh t rl t rh and t rl (ms) ambient temperature ta ( c) ambient temperature ta ( c) test circuit oscilloscope test circuit oscilloscope 0.01 c r t on 750 k 510 k 5 v v cc tadj p-run acc c f gnd c r v cc 0.01 0.1 t rl t rh 75 k 51 k 5 v v cc tadj p-run acc c f gnd c r 5 v 0 v res res res
ha16117f series rev.3.00 jun 15, 2005 page 30 of 30 package dimensions 4 e index mark 85 1 y xm p * 3 * 2 * 1 f a b z h e d detail f 1 1 l l a 1 1 p terminal cross section c b b c prsp0008de-a p-sop8-4.4x4.85-1.27 a l e e c b d e a b c x y h z l 2 1 1 e 1 mass[typ.] 4.85 1.05 0.12 0 8 6.50 0.17 0.22 0.27 0.40 0.50 0.000.100.20 4.4 0.20 0.42 0.60 0.85 2.03 reference symbol dimension in millimeters min nom max previous code jeita package code renesas code fp-8d 1 a p 0.34 0.42 6.75 6.35 1.27 0.15 0.75 5.25 0.1g note) 1. dimensions" * 1 (nom)"and" * 2" do not include mold flash. 2. dimension" * 3"does not include trim offset.
keep safety first in your circuit designs! 1. renesas technology corp. puts the maximum effort into making semiconductor products better and more reliable, but there is al ways the possibility that trouble may occur with them. trouble with semiconductors may lead to personal injury, fire or property damage. remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or (iii) prevention against any malfunction or mishap. notes regarding these materials 1. these materials are intended as a reference to assist our customers in the selection of the renesas technology corp. product best suited to the customer's application; they do not convey any license under any intellectual property rights, or any other rights, belonging to renesas t echnology corp. or a third party. 2. renesas technology corp. assumes no responsibility for any damage, or infringement of any third-party's rights, originating i n the use of any product data, diagrams, charts, programs, algorithms, or circuit application examples contained in these materials. 3. all information contained in these materials, including product data, diagrams, charts, programs and algorithms represents in formation on products at the time of publication of these materials, and are subject to change by renesas technology corp. without notice due to product improvement s or other reasons. it is therefore recommended that customers contact renesas technology corp. or an authorized renesas technology corp. product distrib utor for the latest product information before purchasing a product listed herein. the information described here may contain technical inaccuracies or typographical errors. renesas technology corp. assumes no responsibility for any damage, liability, or other loss rising from these inaccuracies or e rrors. please also pay attention to information published by renesas technology corp. by various means, including the renesas technolo gy corp. semiconductor home page (http://www.renesas.com). 4. when using any or all of the information contained in these materials, including product data, diagrams, charts, programs, an d algorithms, please be sure to evaluate all information as a total system before making a final decision on the applicability of the information and products. renesas technology corp. assumes no responsibility for any damage, liability or other loss resulting from the information contained herein. 5. renesas technology corp. semiconductors are not designed or manufactured for use in a device or system that is used under cir cumstances in which human life is potentially at stake. please contact renesas technology corp. or an authorized renesas technology corp. product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerosp ace, nuclear, or undersea repeater use. 6. the prior written approval of renesas technology corp. is necessary to reprint or reproduce in whole or in part these materia ls. 7. if these products or technologies are subject to the japanese export control restrictions, they must be exported under a lice nse from the japanese government and cannot be imported into a country other than the approved destination. any diversion or reexport contrary to the export control laws and regulations of japan and/or the country of destination is pro hibited. 8. please contact renesas technology corp. for further details on these materials or the products contained therein. sales strategic planning div. nippon bldg., 2-6-2, ohte-machi, chiyoda-ku, tokyo 100-0004, japan http://www.renesas.com refer to " http://www.renesas.com/en/network " for the latest and detailed information. renesas technology america, inc. 450 holger way, san jose, ca 95134-1368, u.s.a tel: <1> (408) 382-7500, fax: <1> (408) 382-7501 renesas technology europe limited dukes meadow, millboard road, bourne end, buckinghamshire, sl8 5fh, u.k. tel: <44> (1628) 585-100, fax: <44> (1628) 585-900 renesas technology hong kong ltd. 7th floor, north tower, world finance centre, harbour city, 1 canton road, tsimshatsui, kowloon, hong kong tel: <852> 2265-6688, fax: <852> 2730-6071 renesas technology taiwan co., ltd. 10th floor, no.99, fushing north road, taipei, taiwan tel: <886> (2) 2715-2888, fax: <886> (2) 2713-2999 renesas technology (shanghai) co., ltd. unit2607 ruijing building, no.205 maoming road (s), shanghai 200020, china tel: <86> (21) 6472-1001, fax: <86> (21) 6415-2952 renesas technology singapore pte. ltd. 1 harbour front avenue, #06-10, keppel bay tower, singapore 098632 tel: <65> 6213-0200, fax: <65> 6278-8001 renesas sales offices ? 200 5. re nesas technology corp ., all rights reser v ed. printed in ja pan. colophon 2.0

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