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(2) Setting in I/O mode and control mode
Port CS is set in I/O mode using the port CS mode register (PMCS). In control mode, it is set using the port
CS mode control register (PMCCS).
(a) Port CS mode register (PMCS)
This register can be read/written in 8-bit or 1-bit units.
7
6
PMCS
PMCS7
PMCS6
Bit Position
Bit Name
7 to 0
PMCSn
(n = 7 to 0)
(b) Port CS mode control register (PMCCS)
This register can be read/written in 8-bit or 1-bit units.
7
6
PMCCS
PMCCS7
PMCCS6
Note 00H: Single-chip mode 0
FFH: Single-chip mode 1, ROMless mode 0 or 1
Bit Position
Bit Name
7 to 0
PMCCSn
(n = 7 to 0)
708
CHAPTER 14 PORT FUNCTIONS
5
4
3
PMCS5
PMCS4
PMCS3
Specifies input/output mode of PCSn pin.
0: Output mode (output buffer on)
1: Input mode (output buffer off)
5
4
3
PMCCS5
PMCCS4
PMCCS3
Specifies operation mode of PCSn pin.
0: I/O port mode
1: CS7 to CS0 output mode
User's Manual U14492EJ3V0UD
2
1
0
PMCS2
PMCS1
PMCS0
Function
2
1
0
PMCCS2
PMCCS1
PMCCS0
Function
Address
Initial value
FFFFF028H
FFH
Note
Address
Initial value
FFFFF048H
00H/FFH
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