HD64F3337YCP16V Datasheet, PDF (186/749 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

7.10.3 Pin Functions
Port 9 has one set of pin functions in modes 1 and 2, and a different set of pin functions in mode 3.
The pins are multiplexed with IRQ₀ to IRQ₂ input, bus control signal input/output, A/D converter
input, system clock (ø) output, host interface input (ECS₂, EIOW), and I²C data input/output
(SDA). Table 7.19 indicates the pin functions of port 9.
Table 7.19 Port 9 Pin Functions
Pin
Pin Functions and Selection Method
P9₇/WAIT/SDA* Bit ICE in ICCR, bit P9₇DDR, the wait mode as determined by WSCR, and the
operating mode select the pin function as follows
Operating mode
Modes 1 and 2
Mode 3
Wait mode
WAIT
WAIT
—
used
not used
ICE
—
0
1
0
1
P9₇DDR
Pin function
—
WAIT
input
pin
0
P9₇
input
pin
1
P9₇
output
pin
—
SDA
input/
output
pin*
0
P9₇
input
pin
1
—
P9₇
output
pin
SDA
input/
output
pin*
Note: * H8/3337 Series only. H8/3397 Series ICs have no SDA pin function.
P9₆/ø
Bit P9₆DDR and the operating mode select the pin function as follows
Operating mode Modes 1 and 2
Mode 3
P9₆DDR
Pin function
Always 1
ø output
0
P9₆ input
1
ø output
P9₅/AS
Bit P9₅DDR and the operating mode select the pin function as follows
Operating mode Modes 1 and 2
Mode 3
P9₅DDR
Pin function
—
AS output
0
P9₅ input
1
P9₅ output
P9₄/WR
Bit P9₄DDR and the operating mode select the pin function as follows
Operating mode Modes 1 and 2
Mode 3
P9₄DDR
Pin function
—
WR output
0
P9₄ input
1
P9₄ output
154