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| HD64F2145 Datasheet, PDF (240/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer | |||
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8.12.4 Pin Functions
⢠PB7/D7/:8(:*2, PB6/D6/:8(9*2, PB5/D5/:8(8*2, PB4/D4/:8(7*2
The pin function is switched as shown below according to the combination of the operating
mode, the PBnDDR bit, and the ABW bit in WSCR.
Operating
Mode
Mode 1 and Modes 2, 3 (EXPE = 1)
Modes 2, 3 (EXPE = 0)
ABW
0
1
â
PBnDDR
â
0
1
0
1
Pin Function
Dn
I/O pin
PBn
input pin
PBn
output pin
PBn
input pin
PBn
output pin
:8(Q input pin*1
Notes: 1. Except when used as a data bus pin, this pin can always be used as the :8(Q input
pin. (n = 7 to 4)
2. Not supported by the H8S/2148B.
⢠PB3/D3/:8(6*2/&67
The pin function is switched as shown below according to the combination of the operating
mode, the HI12E and CS4E bits in SYSCR2, the ABW bit in WSCR, and the PB3DDR bit.
Operating
Mode
Mode 1 and Modes 2, 3 (EXPE = 1)
Modes 2, 3 (EXPE = 0)
HI12E
â
Either cleared to 0
1
CS4E
â
1
ABW
0
1
â
â
PB3DDR
â
0
1
0
1
â
Pin Function D3 I/O pin
PB3
input pin
PB3
output pin
PB3
input pin
PB3
output pin
&67
input pin
:8(6 input pin*1
Notes: 1. Except when used as a data bus pin, this pin can always be used as the :8(6 input
pin. The &67 input pin can only be used in mode 2 or 3 (EXPE = 0).
2. Not supported by the H8S/2148B.
Rev. 2.0, 08/02, page 200 of 788
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