h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 287

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Pin
P83
P82/HIFSD
P81/GA20/CS2
P80/HA0
Selection Method and Pin Functions
The pin function is switched as shown below according to bit P83DDR.
The pin function is switched as shown below according to the combination of
operating mode, bit SDE in SYSCR2 of the HIF, and bit P82DDR.
The pin function is switched as shown below according to the combination of
operating mode, bit CS2E, bit FGA20E in HICR of the HIF, and bit P81DDR.
This pin should be used as the GA20 or CS2 output pin only in mode 2 or 3
(EXPE = 0).
The pin function is switched as shown below according to the combination of
operating mode and bit P80DDR.
P83DDR
Pin function
Operating
mode
SDE
P82DDR
Pin function
Operating
mode
FGA20E
CS2E
P81DDR
Pin function
Operating
mode
P80DDR
Pin function
Not slave mode
input pin
input
P81
pin
0
P80 input pin
P82
Not slave mode
0
—
—
P83 input pin
0
output
—
P81
pin
1
Not slave mode
output pin
0
P82
1
input
P81
pin
0
Rev. 4.00 Jun 06, 2006 page 233 of 1004
P80 output pin
0
input pin
output
P81
P82
pin
1
0
1
0
Slave mode
0
input
CS2
Slave mode
pin
output pin
—
1
P83 output pin
P82
1
Section 8 I/O Ports
REJ09B0301-0400
HA0 input pin
1
Slave mode
input
P81
pin
0
—
input pin
—
1
HIFSD
output
—
GA20
1
pin
1