HD6433644R datasheet(222/549 Pages) RENESAS

Part #	HD6433644R

Description	8-Bit Single-Chip Microcomputer

PDF	549 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Section 8 I/O Ports

Rev. 6.00 Sep 12, 2006 page 202 of 526

REJ09B0326-0600

Port Data Register B (PDRB)

Bit

PB7

PB6

PB5

PB4

PB3

PB2

PB1

PB0

Read/Write

Reading PDRB always gives the pin states. However, if a port B pin is selected as an analog input

channel for the A/D converter by AMR bits CH3 to CH0, that pin reads 0 regardless of the input

voltage.

8.10.3

Pin Functions

Table 8.27 shows the port B pin functions.

Table 8.27 Port B Pin Functions

Pin Functions and Selection Method

PBn/ANn

Always as below.

(n = 7 to 0)

Pin function

PBn input pin or ANn input pin

8.10.4

Pin States

Table 8.28 shows the port B pin states in each operating mode.

Table 8.28 Port B Pin States

Pins

Reset

Sleep

Subsleep Standby

Watch

Subactive Active

PBn/ANn

High-

impedance

High-

impedance

High-

impedance

High-

impedance

High-

impedance

High-

impedance

High-

impedance

(n = 7 to 0)

HD6433644R Datasheet(PDF) 222 Page - Renesas Technology Corp

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