Operation

STM6321/6322STM6821/6822/6823/6824/6825

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2

Operation

2.1

Reset output

to 85°C.

2.2

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 Figure 11). Select a resistor value large enough to register a logic low,

and small enough to register a logic high while supplying all input current and leakage paths

connected to the reset output line. A 10k

Ω 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

AI09137

STM6XXX

RST

MR

(1)

WDI

(2)

RST

(3)

GND

10k

5V System

5.0V

3.3V