ST7260E1 STMicroelectronics, ST7260E1 Datasheet - Page 42

• Manufacturer Part Number: ST7260E1
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 8K FLASH/ROM AND SERIAL COMMUNICATION INTERFACE (SCI)
• Manufacturer: STMicroelectronics

Specifications of ST7260E1

• 4 Or 8 Kbytes Program Memory: high density Flash (HDFlash), or FastROM with readout and write protection

I/O ports
10.2.6
10.2.7
42/139
Data direction register (PxDDR)
Table 19.
Table 20.
Related documentation
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PADDR
PBDDR
PCDDR
Address (Hex.) Register label
Bit
7:0
DD7
R/W
AN 970: SPI Communication between ST7 and EEPROM
AN1048: Software LCD driver
7
0000h
0001h
0002h
0003h
0004h
0005h
0006h
0007h
Name
[7:0]
D
D
PxDDR register description
I/O port register map and reset values
Data Direction bits
The DDR register gives the input/output direction configuration of the pins. Each bit is
set and cleared by software.
DD6
R/W
0: Input mode
1: Output mode
For Port C, unused bits (7-3) are not accessible
6
PADR
reset value
PADDR
reset value
PBDR
reset value
PBDDR
reset value
PCDR
reset value
PCDDR
reset value
DD5
R/W
5
DD7
DD7
DD7
D7
D7
D7
7
0
0
0
0
0
0
DD4
R/W
4
DD6
DD6
DD6
D6
D6
D6
6
0
0
0
0
0
0
Function
DD5
DD5
DD5
D5
D5
D5
DD3
R/W
Reserved
Reserved
5
0
0
0
0
0
0
3
DD4
DD4
DD4
D4
D4
D4
4
0
0
0
0
0
0
DD2
R/W
2
DD3
DD3
DD3
D3
D3
D3
Reset value: 0000 0000 (00h)
Reset value: 0000 0000 (00h)
Reset value: 1111 x000 (Fxh)
3
0
0
0
0
0
0
DD2
DD2
DD2
D2
D2
D2
2
0
0
0
0
0
0
DD1
R/W
1
DD1
DD1
DD1
D1
D1
D1
1
0
0
0
0
0
0
ST7260xx
DD0
R/W
0
DD0
DD0
DD0
D0
D0
D0
0
0
0
0
0
0
0