HD6432138SW datasheet(262/1061 Pages) RENESAS

Part #	HD6432138SW

Description	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

PDF	1061 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. 4.00 Jun 06, 2006 page 208 of 1004

REJ09B0301-0400

8.4

Port 3

8.4.1

Overview

Port 3 is an 8-bit I/O port. Port 3 pins also function as host data bus I/O pins (HDB7 to HDB0)

(H8S/2138 Group only), and as data bus I/O pins. Port 3 functions change according to the

operating mode. Port 3 has an on-chip MOS input pull-up function that can be controlled by

software.

Figure 8.9 shows the port 3 pin configuration.

P37/D7/HDB7

P36/D6/HDB6

P35/D5/HDB5

P34/D4/HDB4

P33/D3/HDB3

P32/D2/HDB2

P31/D1/HDB1

P30/D0/HDB0

Port 3

Port 3 pins

D7 (I/O)

D6 (I/O)

D5 (I/O)

D4 (I/O)

D3 (I/O)

D2 (I/O)

D1 (I/O)

D0 (I/O)

Pin functions in modes 1, 2 and 3 (EXPE = 1)

P37 (I/O)/HDB7 (I/O)

P36 (I/O)/HDB6 (I/O)

P35 (I/O)/HDB5 (I/O)

P34 (I/O)/HDB4 (I/O)

P33 (I/O)/HDB3 (I/O)

P32 (I/O)/HDB2 (I/O)

P31 (I/O)/HDB1 (I/O)

P30 (I/O)/HDB0 (I/O)

Pin functions in modes 2 and 3 (EXPE = 0)

Figure 8.9 Port 3 Pin Functions

HD6432138SW Datasheet(PDF) 262 Page - Renesas Technology Corp

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