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H8/3003 数据表(PDF) 275 Page - Renesas Technology Corp

部件名 H8/3003
功能描述  microcontroller (MCU)
PDF  715 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8/3003 数据表(HTML) 275 Page - Renesas Technology Corp

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9.7 Port 9
9.7.1 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 IRQ4 input. Port 9 has the same set of pin functions in all operating modes. Figure 9-10 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.
Figure 9-10 Port 9 Pin Configuration
9.7.2 Register Descriptions
Table 9-11 summarizes the registers of port 9.
Table 9-11 Port 9 Registers
Address*
Name
Abbreviation
R/W
Initial Value
H'FFD0
Port 9 data direction register
P9DDR
W
H'C0
H'FFD2
Port 9 data register
P9DR
R/W
H'C0
Note: * Lower 16 bits of the address.
Port 9
P9 (input/output)/SCK
P9 (input/output)/SCK
P9 (input/output)/RxD (input)
P9 (input/output)/RxD (input)
P9 (input/output)/TxD (output)
P9 (input/output)/TxD (output)
5
4
3
2
1
0
Port 9 pins
1
0
(input/output)/IRQ (input)
(input/output)/IRQ (input)
5
4
1
0
1
0
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