h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 293

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

Pin
P90/IRQ2/
ADTRG/ECS2
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
operating mode, bits HI12E and CS2E in SYSCR2, bit FGA20E in HICR, and
bit P90DDR.
When the IRQ2E bit in IER is set to 1, this pin is used as the IRQ2 input pin.
When TRGS1 and TRGS0 in ADCR of the A/D converter are both set to 1, this
pin is used as the ADTRG input pin.
Operating
mode
HI12E
FGA20E
CS2E
P90DDR
Pin function
input pin
P90
0
Modes 1, 2, 3
(EXPE = 1)
—
—
—
output pin
IRQ2 input pin, ADTRG input pin
P90
1
Rev. 4.00 Jun 06, 2006 page 239 of 1004
input pin
P90
0
Any one 0
(EXPE = 0)
Modes 2, 3
output pin
P90
1
Section 8 I/O Ports
REJ09B0301-0400
input pin
ECS2
—
1
1
1