STM6321_08 Datasheet, PDF (1/28 Pages) STMicroelectronics – 5-pin supervisor with watchdog timer and push-button reset

STM6321/6322
STM6821/6822/6823/6824/6825
5-pin supervisor with watchdog timer and push-button reset
Features
■ Precision V_CC monitoring of 5, 3.3, 3, or 2.5 V
power supplies
■ RST outputs (active-low, push-pull or open
drain)
■ RST outputs (active-high, push-pull)
■ Reset pulse width of 1.4 ms, 200 ms and
240 ms (typ)^(a)
■ Watchdog timeout period of 1.6 s (typ)^(a)
■ Manual reset input (MR)
■ Low supply current - 3 µA (typ)
■ Guaranteed RST (RST) assertion down to
V_CC = 1.0 V
■ Operating temperature: –40 to +85°C
(industrial grade)
■ RoHS compliance
Lead-free components are compliant with the
RoHS directive
a. Other t_rec and watchdog timings are
offered. Minimum order quantities may
apply. Contact local sales office for
availability.
Table 1. Device summary
Part number
Watchdog input
Manual reset
input
STM6321
✔
STM6322
✔
STM6821
✔
✔
STM6822
✔
✔
STM6823
✔
✔
STM6824
✔
STM6825
✔
Active-low
(push-pull)
✔
✔
✔
SOT23-5 (WY)
Reset output
Active-high
(push-pull)
✔
✔
✔
Active-low
(open drain)
✔
✔
✔
✔
✔
June 2008
Rev 8
1/28
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