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ST72321 Datasheet(PDF) 51 Page - STMicroelectronics

Part # ST72321
Description  64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC,FIVE TIMERS, SPI, SCI, I2C INTERFACE
PDF  189 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72321 Datasheet(HTML) 51 Page - STMicroelectronics

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I/O PORTS (Cont’d)
Table 12. I/O Port Register Map and Reset Values
Related Documentation
AN 970: SPI Communication between ST7 and
EEPROM
AN1045: S/W implementation of I2C bus master
AN1048: Software LCD driver
Address
(Hex.)
Register
Label
76543
210
Reset Value
of all I/O port registers
000
00
000
0000h
PADR
MSB
LSB
0001h
PADDR
0002h
PAOR
0003h
PBDR
MSB
LSB
0004h
PBDDR
0005h
PBOR
0006h
PCDR
MSB
LSB
0007h
PCDDR
0008h
PCOR
0009h
PDDR
MSB
LSB
000Ah
PDDDR
000Bh
PDOR
000Ch
PEDR
MSB
LSB
000Dh
PEDDR
000Eh
PEOR
000Fh
PFDR
MSB
LSB
0010h
PFDDR
0011h
PFOR



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