ST72E632K2B0 查看數據表（PDF） - STMicroelectronics

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ST72E632K2B0

LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C

STMicroelectronics 

ST7263

I/O PORTS (Cont’d)

Table 10. PA1, PA2 Description

PORT A

PA1

PA2

*Reset State

Input*

without pull-up

without pull-up

I/O

Output

Very High Current open drain

Very High Current open drain

Figure 19. PA1, PA2 Configuration

ALTERNATE ENABLE

ALTERNATE 1

OUTPUT

0

DR

LATCH

Alternate Function

Signal

Condition

SDA (I2C data)

I2C enable

SCL (I2C clock)

I2C enable

DDR

LATCH

PAD

DDR SEL

DR SEL

1

0

N-BUFFER

ALTERNATE ENABLE

VSS

CMOS SCHMITT TRIGGER

28/109

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