h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 292

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

• PA2/A18/UCAS
• PA1/A18/UCAS
Note:
• PA0/A16/(IRQ0)
Note:
Rev. 2.00, 03/04, page 260 of 534
EXPE
Area 2
AHOE
PA2DDR
Pin function
EXPE
Area 2
AHOE
PA1DDR
Pin function
EXPE
AHOE
PA0DDR
Pin function
The pin function is switched as shown below according to the combination of the PA2DDR
bit, the EXPE bit in MDCR, and the AHOE bit in PFCR1.
The pin function is switched as shown below according to the combination of the PA2DDR
bit, the EXPE bit in MDCR, and the AHOE bit in PFCR1.
The pin function is switched as shown below according to the combination of the PA0DDR
bit, the EXPE bit in MDCR, the AHOE bit in PFCR1, and the ISS0 bit in ISSR.
*
*
When ISS1 = 1, this pin functions as IRQ1 interrupt input.
When ISS0 = 1, this pin functions as IRQ0 interrupt input.
PA2 input
PA1 input
PA0 input
0
0
0




0
0

0
PA2 output
PA1 output
PA0 output
1
1
1
PA2 input
PA1 input
IRQ1 interrupt input*
IRQ0 interrupt input*
PA0 input
0
0
0
0
Normal space
0
Normal space
PA2 output
PA1 output
1
0
1
PA0 output
1
1
1
A18 output UCAS output
1
A17 output

1

1
DRAM space
A16 output
DRAM
output
space
LCAS

1



