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CHAPTER 3 CPU FUNCTIONS
User’s Manual U15109EJ3V0UD
108
3.4.8 Peripheral I/O registers
(1/10)
Bit Units for Manipulation
Address
Function Register Name
Symbol
R/W
1 Bit
8 Bits 16 Bits 32 Bits
After Reset
FFFFF000H
Port 0
P0
√
√
FFFFF002H
Port 1
P1
√
√
FFFFF004H
Port 2
P2
√
√
FFFFF006H
Port 3
P3
√
√
FFFFF008H
Port 4
P4
√
√
FFFFF00AH
Port 5
P5
√
√
FFFFF00CH
Port 6
P6
R/W
√
√
00H
Note
FFFFF00EH
Port 7
P7
√
√
FFFFF010H
Port 8
P8
R
√
√
Undefined
FFFFF012H
Port 9
P9
√
√
FFFFF014H
Port 10
P10
√
√
FFFFF016H
Port 11
P11
√
√
FFFFF018H
Port 12
P12
√
√
FFFFF01AH
Port 13
P13
√
√
FFFFF01CH
Port 14
P14
√
√
FFFFF01EH
Port 15
P15
√
√
00H
Note
FFFFF020H
Port 0 mode register
PM0
√
√
FFH
FFFFF022H
Port 1 mode register
PM1
√
√
FFH
FFFFF024H
Port 2 mode register
PM2
√
√
FFFFF026H
Port 3 mode register
PM3
√
√
FFFFF028H
Port 4 mode register
PM4
√
√
FFFFF02AH
Port 5 mode register
PM5
√
√
FFH
FFFFF02CH
Port 6 mode register
PM6
√
√
3FH
FFFFF032H
Port 9 mode register
PM9
√
√
7FH
FFFFF034H
Port 10 mode register
PM10
√
√
FFH
FFFFF036H
Port 11 mode register
PM11
√
√
FFFFF038H
Port 12 mode register
PM12
√
√
FFH
FFFFF03AH
Port 13 mode register
PM13
√
√
0FH
FFFFF03CH
Port 14 mode register
PM14
√
√
FFFFF03EH
Port 15 mode register
PM15
√
√
FFH
FFFFF040H
Port alternate-function control register
PAC
√
√
FFFFF042H
Port alternate-function control register 2
PAC2
√
√
FFFFF048H
Port 17
P17
√
√
FFFFF04CH
Memory expansion mode register
MM
√
√
00H
FFFFF058H
Port 17 mode register
PM17
R/W
√
√
7FH
Note
Resetting initializes registers to input mode, so the pin level is read during a read operation. The output
latch is initialized to 00H.