ST7263BEx datasheet(51/186 Pages) STMICROELECTRONICS

部件名	ST7263BEx

功能描述	Low speed USB 8-bit MCU family with up to 32 KB Flash/ROM, DFU capability, 8-bit ADC, WDG, timer, SCI and I²C

PDF	186 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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51 / 186 page

ST7263Bxx

I/O ports

Doc ID 7516 Rev 8

51/186

Data Direction register (PxDDR)

Address

Port A Data Direction register (PADDR): 0001h

Port B Data Direction register (PBDDR): 0003h

Port C Data Direction register (PCDDR): 0005h

Port D Data Direction register (PDDDR): 0007h

Reset value

Port A: 0000 0000 (00h)

Port B: 0000 0000 (00h)

Port C: 1111 x000 (FXh)

Port D: 0000 0000 (00h)

Note:

For Port C, unused bits (7-3) are not accessible

Read/write

[7:0] D[7:0] Data register 8 bits.

DD7

DD6

DD5

DD4

DD3

DD2

DD1

DD0

Read/write

[7:0]D D[7:0] Data Direction register 8 bits.

The DDR register gives the input/output direction configuration of the pins. Each bit

is set and cleared by software.

0: input mode

1: output mode

Table 16.

I/O ports register map

Address

(Hex.)

Label

543

PADR

MSB

LSB

PADDR

MSB

LSB

PBDR

MSB

LSB

PBDDR

MSB

LSB

PCDR

MSB

LSB

PCDDR

MSB

LSB

PDDR

MSB

LSB

PDDDR

MSB

LSB

ST7263BEx 数据表(PDF) 51 Page - STMicroelectronics

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