H8SSLASH2214 datasheet(385/936 Pages) RENESAS

Il numero della parte	H8S/2214

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	936 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 325 of 872

REJ09B0189-0400

PBPCR is an 8-bit readable/writable register that controls the MOS input pull-up function

incorporated into port B on a bit-by-bit basis.

PBPCR is valid for port input and TPU input pins.

When a PBDDR bit is cleared to 0 (input port setting), setting the corresponding PBPCR bit to 1

turns on the MOS input pull-up for the corresponding pin.

PBPCR is initialized to H'00 by a power-on reset and in hardware standby mode. It retains its

previous state after a manual reset and in software standby mode.

9.8.3

Pin Functions

Port B pins also function as address output pins (A15 to A8). Port B pin functions are shown in

table 9.14.

Table 9.14

Port B Pin Functions

Pin Functions and Selection Method

PB7/A15

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

operating mode, PFCR setting, and bit PB7DDR.

Operating mode

Modes 4 to 6

AE3 to AE0 in

PFCR

B'1xxx

Other than B'1xxx

PB7DDR

—

Pin function

A15 output

PB7 input

PB7 output

Operating mode

Mode 7

AE3 to AE0 in

PFCR

—

PB7DDR

Pin function

PB7 input

PB7 output

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