Datasheet

ST72321Rx ST72321ARx ST72321Jx
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I/O PORTS (Cont’d)
Table 13. I/O Port Register Map and Reset Values
Related Documentation
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EEPROM
AN1045: S/W implementation of I2C bus master
AN1048: Software LCD driver
Address
(Hex.)
Register
Label
76543210
Reset Value
of all I/O port registers
00000000
0000h PADR
MSB LSB0001h PADDR
0002h PAOR
0003h PBDR
MSB LSB0004h PBDDR
0005h PBOR
0006h PCDR
MSB LSB0007h PCDDR
0008h PCOR
0009h PDDR
MSB LSB000Ah PDDDR
000Bh PDOR
000Ch PEDR
MSB LSB000Dh PEDDR
000Eh PEOR
000Fh PFDR
MSB LSB0010h PFDDR
0011h PFOR