h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 281

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

• P74/A4/IRQ4
Note:
• P73/A3/IRQ3
Note:
• P72/A2/IRQ2
Note: * When ISS2 = 0, this pin functions as IRQ2 interrupt input.
EXPE
ALOE
P74DDR
Pin function
EXPE
ALOE
P73DDR
Pin function
EXPE
ALOE
P72DDR
Pin function
The pin function is switched as shown below according to the combination of the P74DDR bit,
the EXPE bit in MDCR, the ALOE bit in PFCR1, and the ISS4 bit in ISSR.
The pin function is switched as shown below according to the combination of the P73DDR bit,
the EXPE bit in MDCR, the ALOE bit in PFCR1, and the ISS3 bit in ISSR.
The pin function is switched as shown below according to the combination of the P72DDR bit,
the EXPE bit in MDCR, the ALOE bit in PFCR1, and the ISS2 bit in ISSR.
*
*
When ISS4 = 0, this pin functions as IRQ4 interrupt input.
When ISS3 = 0, this pin functions as IRQ3 interrupt input.
P74 input
P73 input
P72 input
0
0
0

0


0
0
P74 output
P73 output
P72 output
1
1
1
IRQ4 interrupt input*
IRQ3 interrupt input*
IRQ2 interrupt input*
P74 input
P73 input
P72 input
0
0
0
0
Rev. 2.00, 03/04, page 249 of 534
0
0
P74 output
P73 output
P72 output
1
1
1
1
1
1
A4 output
A3 output
A2 output

1


1
1