HD64F2149 Datasheet, PDF (271/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Table 8.19 Port 9 Pin Functions
Pin
P97/WAIT/SDA0
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
operating mode, bit WMS1 in WSCR, bit ICE in ICCR of IIC0, and bit P97DDR.
Operating
mode
Modes 1, 2, 3 (EXPE = 1)
Modes 2, 3 (EXPE = 0)
WMS1
0
1
—
ICE
0
1
—
0
1
P97DDR
0
1
—
—
0
1
—
Pin function
P97
input
pin
P97 SDA0
output I/O pin
pin
WAIT
input
pin
P97
input
pin
P97 SDA0
output I/O pin
pin
When this pin is set as the P97 output pin, it is an NMOS push-pull output.
SDA0 is an NMOS open-drain output, and has direct bus drive capability.
P96/ø/EXCL
The pin function is switched as shown below according to the combination of
bit EXCLE in LPWRCR and bit P96DDR.
P96DDR
0
1
EXCLE
0
1
0
Pin function P96 input pin
EXCL input pin
ø output pin
When this pin is used as the EXCL input pin, P96DDR should be cleared to 0.
P95/AS/IOS/CS1 The pin function is switched as shown below according to the combination of
operating mode, bit IOSE in SYSCR, bit HI12E in SYSCR2, and bit P95DDR.
Operating
mode
Modes 1, 2, 3
(EXPE = 1)
Modes 2, 3 (EXPE = 0)
HI12E
—
0
1
P95DDR
—
0
1
—
IOSE
0
1
—
—
—
Pin function
AS
IOS
P95
P95
CS1
output pin output pin input pin output pin input pin
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