ST7LITE20F2 datasheet(69/166 Pages) STMICROELECTRONICS

部件名	ST7LITE20F2

功能描述	8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, Timers, SPI

PDF	166 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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69 / 166 page

ST7LITE20F2 ST7LITE25F2 ST7LITE29F2

I/O ports

Doc ID 8349 Rev 5

69/166

Note:

On ports where the external interrupt capability is selected using the EISR register, the

configuration will be as follows:

Interrupt ports

Open drain output

Push-pull output

Table 27.

Port configuration (standard ports)

Port

Pin name

Input

Output

OR = 0

OR = 1

OR = 0

OR = 1

Port A

PA7:0

Floating

Pull-up

Open drain

Push-pull

Port B

PB6:0

Floating

Pull-up

Open drain

Push-pull

Table 26.

Ports PA7:0, PB6:0 (continued)

Mode

DDR

Table 28.

Port configuration (Interrupt ports)

Port

Pin name

Input

Output

OR = 0

OR = 1

OR = 0

OR = 1

Port A

PA7:0

Floating

Pull-up interrupt

Open drain

Push-pull

Port B

PB6:0

Floating

Pull-up interrupt

Open drain

Push-pull

Table 29.

Ports where the external interrupt capability selected using the EISR

Mode

DDR

Floating input

Pull-up interrupt input

Open drain output

Push-pull output

Table 30.

I/O port register map and reset values

Address

(Hex.)

label

7654321

0000h

PADR

Reset value

MSB

1111111

LSB

0001h

PADDR

Reset value

MSB

0000000

LSB

0002h

PAOR

Reset value

MSB

0100000

LSB

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