HD64F2149 Datasheet, PDF (249/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Pin
Selection Method and Pin Functions
P43/TMCI1/
The pin function is switched as shown below according to the combination of
HIRQ11/HSYNCI bit HI12E in SYSCR2 and bit P43DDR.
P43DDR
0
1
HI12E
—
0
1
Pin function P43 input pin
P43 output pin HIRQ11 output pin
TMCI1 input pin, HSYNCI input pin
When an external clock is selected with bits CKS2 to CKS0 in TCR1 of TMR1,
this pin is used as the TMCI1 input pin. It can also be used as the HSYNCI
input pin.
P42/TMRI0/
SCK2/SDA1
The pin function is switched as shown below according to the combination of
bit ICE in ICCR of IIC1, bits CKE1 and CKE0 in SCR of SCI2, bit C/A in SMR
of SCI2, and bit P42DDR.
ICE
0
1
CKE1
0
1
0
C/A
0
1
—
0
CKE0
0
1
—
—
0
P42DDR
0
1
—
—
—
—
Pin function P42
P42
SCK2 SCK2 SCK2 SDA1
input pin output pin output pin output pin input pin I/O pin
TMRI0 input pin
When this pin is used as the SDA1 I/O pin, bits CKE1 and CKE0 in SCR of
SCI2 and bit C/A in SMR of SCI2 must all be cleared to 0. SDA1 is an NMOS-
only output, and has direct bus drive capability.
When bits CCLR1 and CCLR0 in TCR0 of TMR0 are set to 1, this pin is used
as the TMRI0 input pin.
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