77
CHAPTER 4 I/O PORTS
Table 4.1-2 Registers of Ports
Register name Read/Write Address Initial value
Port 0 data register (PDR0) R/W 0000HXXXXXXXXB
Port 0 data direction register (DDR0) W *1 0001H00000000B
Port 0 pull-up setting register (PUL0) R/W 0070H00000000B
Port 3 data register (PDR3) R/W 000CHXXXXXXXXB
Port 3 data direction register (DDR3) W *1 000DH00000000B
Port 3 pull-up setting register (PUL3) R/W 0071H00000000B
Port 4 data register (PDR4) R/W 000FH----XXXXB
Port 4 data direction register (DDR4) R/W 0010H----0000B
Port 4 output form setting register (OUT4) R/W 0011H----0000B
Port 5 data register (PDR5) R/W 0012H-------XB
Port 5 data direction register (DDR5) R/W 0013H-------0B
Port 5 pull-up setting register (PUL5) R/W 0072H-------0B
Port 6 data register (PDR6) R/W 0060H------XXB
Port 6 data direction register *2 (DDR6) R/W 0061H------00B
Port 6 pull-up setting register (PUL6) R/W 0062H------00B
Port 7 data register (PDR7) R/W 0063H-----XXXB
Port 7 data direction register (DDR7) R/W 0064H-----000B
Port 7 pull-up setting register (PUL7) R/W 0065H-----000B
R/W : Readable and Writable
W : Write only
X : Undefined
*1 : DDR0 and DDR3 cannot be used for bit manipulation instructions.
*2 : DDR6 is not used in MB89F202/F202RA.