stm6823sjwy6f STMicroelectronics, stm6823sjwy6f Datasheet - Page 10

• Manufacturer Part Number: stm6823sjwy6f
• Description: 5-pin Supervisor With Watchdog Timer And Push-button Reset
• Manufacturer: STMicroelectronics

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2.1
2.2
10/26
Operation
Reset output
The STM6xxx Supervisor asserts a reset signal to the MCU whenever V
reset threshold (V
(MR) is taken low. Reset is guaranteed valid for V
to 85°C.
During power-up, once V
for the reset time-out period, t
Each time RST is asserted, it stays low for at least the reset time-out period (t
V
V
Open drain RST output
The STM6321/6322/6822 have an active-low, open drain reset output. This output structure
will sink current when RST is asserted. Connect a pull-up resistor from RST to any supply
voltage up to 6V (see
and small enough to register a logic high while supplying all input current and leakage paths
connected to the reset output line. A 10kΩ pull-up resistor is sufficient in most applications.
Figure 11. STM6321/6322/6822 open drain RST output with multiple supplies
1. STM6322/6822
2. STM6321/6822
3. STM6321/6322
CC
CC
goes below the reset threshold the internal timer clears. The reset timer starts when
returns above the reset threshold.
RST
), a watchdog time-out occurs, or when the Push-button Reset Input
Figure
CC
exceeds the reset threshold an internal timer keeps reset low
11). Select a resistor value large enough to register a logic low,
rec
MR
WDI
RST
. After this interval reset is de-asserted.
STM6XXX
(1)
(2)
(3)
3.3V
V
CC
GND
RST
10k
CC
5V System
< V
5.0V
RST
AI09137
down to V
CC
CC
=1V for T
goes below the
rec
). Any time
A
= 0°C