STM6822 STMicroelectronics, STM6822 Datasheet - Page 5

• Manufacturer Part Number: STM6822
• Description: Reset + Watchdog
• Manufacturer: STMicroelectronics

STM6321/6322STM6821/6822/6823/6824/6825
1
Description
The STM6xxx supervisors are self-contained devices which provide microprocessor
supervisory functions. A precision voltage reference and comparator monitors the V
for an out-of-tolerance condition. When an invalid V
(RST) is forced low (or high in the case of RST). These devices also offer a watchdog timer
(except for STM6322/6825) and/or a push-button (MR) reset input.
These devices are available in a standard 5-pin SOT23 package.
Figure 1.
1. For STM6821 only.
Figure 2.
1. For STM6321/6824.
Table 2.
WDI
RST
RST
V
V
MR
CC
SS
Logic diagram (STM6821/6822/6823)
Logic diagram (STM6321/6322/6824/6825)
Signal names
Push-button reset input
Watchdog input
Active-low reset output
Active-high reset output
Supply voltage
Ground
(WDI)
Doc ID 11110 Rev 11
(1)
WDI
MR
MR
STM6XXX
STM6XXX
V
V
V
V
CC
SS
CC
SS
CC
condition occurs, the reset output
RST (RST)
AI09128
AI09129
RST
RST
(1)
Description
CC
input
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