STM802T/S/R STMicroelectronics, STM802T/S/R Datasheet - Page 6

• Manufacturer Part Number: STM802T/S/R
• Description: 3V Supervisor
• Manufacturer: STMicroelectronics

Specifications of STM802T/S/R

• Operating Temperature: –40 °C to 85 °C (industrial grade)

Description
1
6/42
Description
The STM690/704/795/802/804/805/806 supervisors are self-contained devices which
provide microprocessor supervisory functions with the ability to non-volatize and write-
protect external LPSRAM. A precision voltage reference and comparator monitors the V
input for an out-of-tolerance condition. When an invalid V
output (RST) is forced low (or high in the case of RST). These devices also offer a watchdog
timer (except for STM704/795/806) as well as a power-fail comparator (except for STM795)
to provide the system with an early warning of impending power failure.
These devices are available in a standard 8-pin SOIC package or a space-saving 8-pin
TSSOP package.
Figure 1.
1. For STM804/805, reset output is active-high and open drain.
Figure 2.
Logic diagram (STM690/802/804/805)
Logic diagram (STM704/806)
STM690, STM704, STM795, STM802, STM804, STM805, STM806
Doc ID 10519 Rev 9
WDI
PFI
MR
PFI
V CC V BAT
V CC V BAT
STM690/
STM704
STM806
802/804/
805
V SS
V SS
CC
V OUT
RST
PFO
V OUT
RST (RST) (1)
PFO
condition occurs, the reset
AI08847
AI08846
CC