HD64F2149YV datasheet(251/1075 Pages) RENESAS

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Section 8 I/O Ports

Rev. 3.00 Jan 18, 2006 page 223 of 1044

REJ09B0280-0300

8.5.3

Pin Functions

Port 4 pins also function as 14-bit PWM output pins (PWX1, PWX0), 8-bit timer 0 and 1 (TMR0,

TMR1) I/O pins (TMCI0, TMRI0, TMO0, TMCI1, TMRI1, TMO1), timer connection I/O pins

(CSYNCI, HSYNCI, HSYNCO), SCI2 I/O pins (TxD2, RxD2, SCK2), IrDA interface I/O pins

(IrTxD, IrRxD), host interface (XBS) output pins (HIRQ12, HIRQ1, HIRQ11), and the IIC1 I/O

pin (SDA1). The port 4 pin functions are shown in table 8.9.

Table 8.9

Port 4 Pin Functions

Selection Method and Pin Functions

P47/PWX1

The pin function is switched as shown below according to the combination of

bit OEB in DACR of 14-bit PWM, and bit P47DDR.

OEB

P47DDR

—

Pin function

P47 input pin

P47 output pin

PWX1 output pin

P46/PWX0

The pin function is switched as shown below according to the combination of

bit OEA in DACR of 14-bit PWM, and bit P46DDR.

OEA

P46DDR

—

Pin function

P46 input pin

P46 output pin

PWX0 output pin

P45/TMRI1/

HIRQ12/CSYNCI

The pin function is switched as shown below according to the combination of

bit HI12E in SYSCR2, and bit P45DDR.

P45DDR

HI12E

—

Pin function

P45 input pin

P45 output pin

HIRQ12 output pin

TMRI1 input pin, CSYNCI input pin

When bits CCLR1 and CCLR0 in TCR1 of TMR1 are set to 1, this pin is used

as the TMRI1 input pin. It can also be used as the CSYNCI input pin.

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