H8SLASH3028F datasheet(310/923 Pages) RENESAS

Part #	H8/3028F

Description	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

PDF	923 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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310 / 923 page

Rev. 2.00, 09/03, page 280 of 890

8.10

Port 9

8.10.1

Overview

Port 9 is a 6-bit input/output port that is also used for input and output (TxD0, TxD1, RxD0, RxD1,

SCK0, SCK1) by serial communication interface channels 0 and 1 (SCI0 and SCI1), and for IRQ5

and

IRQ

4 input. See table 8.17 for the selection of pin functions.

The

IRQ

5 and IRQ4 functions are selected by IER settings, regardless of whether the pin is used

for input or output. Caution is therefore required. For details see section 5.3.1, External Interrupts.

Port 9 has the same set of pin functions in all operating modes. Figure 8.9 shows the pin

configuration of port 9.

Pins in port 9 can drive one TTL load and a 30-pF capacitive load. They can also drive a

darlington transistor pair.

Port 9

P9 (input/output)/SCK

P9 (input/output)/RxD (input)

P9 (input/output)/TxD (output)

Port 9 pins

(input/output)/IRQ (input)

Figure 8.9 Port 9 Pin Configuration

H8/3028F Datasheet(PDF) 310 Page - Renesas Technology Corp