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H8/3028F 数据表(PDF) 293 Page - Renesas Technology Corp

部件名 H8/3028F
功能描述  Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
PDF  923 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8/3028F 数据表(HTML) 293 Page - Renesas Technology Corp

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Rev. 2.00, 09/03, page 263 of 890
8.6
Port 5
8.6.1
Overview
Port 5 is a 4-bit input/output port with the pin configuration shown in figure 8.5. The pin functions
differ depending on the operating mode.
In modes 1 to 4 (expanded modes with on-chip ROM disabled), port 5 consists of address output
pins (A19 to A16). In mode 5 (expanded modes with on-chip ROM enabled), settings in the port 5
data direction register (P5DDR) designate pins for address bus output (A19 to A16) or generic
input. In modes 6, 7 (single-chip mode), port 5 is a generic input/output port.
Port 5 has software-programmable built-in pull-up transistors.
Pins in port 5 can drive one TTL load and a 90-pF capacitive load. They can also drive an LED or
a darlington transistor pair.
Port 5
P5 /A
P5 /A
P5 /A
P5 /A
3
2
1
0
19
18
17
16
A (output)
A (output)
A (output)
A (output)
19
18
17
16
P5 (input)/A (output)
P5 (input)/A (output)
P5 (input)/A (output)
P5 (input)/A (output)
3
2
1
0
Port 5
pins
Modes 1 to 4
Mode 5
P5 (input/output)
P5 (input/output)
P5 (input/output)
P5 (input/output)
3
2
1
0
Modes 6 and 7
19
18
17
16
Figure 8.5 Port 5 Pin Configuration
8.6.2
Register Descriptions
Table 8.8 summarizes the registers of port 5.
Table 8.8
Port 5 Registers
Initial Value
Address* Name
Abbreviation R/W Modes 1 to 4 Modes 5 to 7
H'EE004 Port 5 data direction register
P5DDR
W
H'FF
H'F0
H'FFFD4 Port 5 data register
P5DR
R/W H'F0
H'F0
H'EE03F Port 5 input pull-up control register P5PCR
R/W H'F0
H'F0
Note: * Lower 20 bits of the address in advanced mode.



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