h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 276

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 I/O Ports
Pin
P91/IRQ1
P90/LWR/IRQ2/
ADTRG/ECS2
Rev. 3.00 Jan 18, 2006 page 248 of 1044
REJ09B0280-0300
Selection Method and Pin Functions
When bit IRQ1E in IER is set to 1, this pin is used as the IRQ1 input pin.
The pin function is switched as shown below according to the combination of
operating mode, bit ABW in WSCR, bits HI12E and CS2E in SYSCR2, bit
FGA20E in HICR, and bit P90DDR.
When the IRQ2E bit in IER is set to 1 in mode 1, modes 2 and 3 (EXPE = 1)
with the ABW bit in WSCR set to 1, or in mode 2 and 3 (EXPE = 0), 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.
P91DDR
Pin function
Operating
mode
ABW
HI12E
FGA20E
CS2E
P90DDR
Pin function
output pin
modes 2 and 3 (EXPE = 1)
LWR
—
0
P91 input pin
input pin
Mode 1,
P90
—
—
—
0
0
1
IRQ2 input pin, ADTRG input pin
output pin
P90
IRQ1 input pin
1
input pin
P90
0
Modes 2, 3 (EXPE = 0)
Any one 0
P91 output pin
output pin
P90
—
1
1
input pin
ECS2
—
1
1
1