STM6321_07 Datasheet, PDF (1/26 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 2.5V
power supplies
■ RST Outputs (active-low, push-pull or open
drain)
■ RST Outputs (active-high, push-pull)
■ Reset pulse width of 1.4ms, 200ms and 240ms
(typ) ^(a)
■ Watchdog timeout period of 1.6s (typ) ^(a)
■ Manual reset input (MR)
■ Low supply current - 3µA (typ)
■ Guaranteed RST (RST) assertion down to
V_CC = 1.0V
■ Operating temperature: –40 to +85°C
(industrial grade)
■ RoHS Compliance
Lead-free components are compliant with the
RoHS directive.
SOT23-5 (WY)
Table 1. Device options
Part number
Watchdog input
Manual reset
input
STM6321
✔
STM6322
✔
STM6821
✔
✔
STM6822
✔
✔
STM6823
✔
✔
STM6824
✔
STM6825
✔
Active-low
(push-pull)
✔
✔
✔
Reset output
Active-high
(push-pull)
✔
✔
✔
Active-low
(open drain)
✔
✔
✔
✔
✔
a.
Other t_rec and watchdog timings are offered. Minimum order quantities may apply. Contact
local sales office for availability.
May 2007
Rev 7
1/26
www.st.com
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