h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 289

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

• P93/LWR
• P92/CS2/RAS
• P91/CS1
• P90/CS0
EXPE
Bus mode
P93DDR
Pin function
EXPE
Area 2
CS2E
P92DDR
Pin function
EXPE
CS1E
P91DDR
Pin function
EXPE
P90DDR
Pin function
The pin function is switched as shown below according to the combination of the P93DDR bit
and the EXPE bit in MDCR.
The pin function is switched as shown below according to the combination of the P92DDR bit,
the EXPE bit in MDCR, and the CS2E bit in PFCR1.
The pin function is switched as shown below according to the combination of the P91DDR bit,
the EXPE bit in MDCR, and the CS1E bit in PFCR1.
The pin function is switched as shown below according to the combination of the P90DDR bit
and the EXPE bit in MDCR.
P93 input
P92 input
P91 input
P90 input
0
0
0
0



0
0
P93 output
P92 output

0
P91 output
1
1
0
1
P90 output
All areas are 8-bit space
P93 input
P92 input
1
0
0
P91 input
0
Normal space
0
P93 output
P92 output
1
1
Rev. 2.00, 03/04, page 257 of 534
0
P91 output
1
1
At least one area is 16-bit
CS2 output RAS output
1
1
CS0 output

1

1
LWR output
space

DRAM space
CS1 output

1

