Operation

STM632x, STM682x

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DocID11110 Rev 13

2

Operation

2.1

Reset output

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 6 V (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 10 k

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.