HD64F2145 datasheet(222/829 Pages) RENESAS

222 / 829 page

Rev. 2.0, 08/02, page 182 of 788

• P75/AN5, P74/AN4, P73/AN3, P72/AN2, P71/AN1, P70/AN0

P75 to P70 input pins

Pin Function

AN5 to AN0 input pin*

Note:* This pin can always be used as the AN5 to AN0 input pins.

8.9

Port 8

Port 8 is an 8-bit I/O port. Port 8 pins also function as SCI_1 I/O pins, the IIC_1 I/O pin, XBS I/O

pins, LPC I/O pins, and interrupt input pins. The output type of P86 and SCK1 is NMOS push-pull

output. The output type of SCL1 is NMOS open drain output and direct bus driving is enabled.

Port 8 pin functions are the same in all operating modes except host interface function. Port 8 has

the following registers.

• Port 8 data direction register (P8DDR)

• Port 8 data register (P8DR)

8.9.1

Port 8 Data Direction Register (P8DDR)

P8DDR specifies input or output for the pins of port 8 on a bit-by-bit basis.

Bit

Bit Name

Initial Value

R/W

Description

7—

—

Reserved

The initial value must not be changed.

P86DDR

P85DDR

P84DDR

P83DDR

P82DDR

P81DDR

P80DDR

P8DDR has the same address as PBPIN, and if

read, the port B state will be returned.

The corresponding port 8 pins are output ports

when P8DDR bits are set to 1, and input ports

when cleared to 0.

HD64F2145 Datasheet(PDF) 222 Page - Renesas Technology Corp