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7733 Scheda tecnica(PDF) 72 Page - Renesas Technology Corp

Il numero della parte 7733
Spiegazioni elettronici  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  940 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7733 Scheda tecnica(HTML) 72 Page - Renesas Technology Corp

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7733 Group User’s Manual
3–3
PROGRAMMABLE I/O PORTS
3.1.1 Port Pi direction register
This register determines the direction of programmable I/O ports. Each bit of this register corresponds to
one specified pin.
Figure 3.1.2 shows the structure of the port Pi (i = 0 to 8) direction register.
3.1 Programmable I/O ports
Fig. 3.1.2 Structure of port Pi (i = 0 to 8) direction register
Bit
Bit name
Functions
0: Input mode
(The port functions as an input port.)
1: Output mode
(The port functions as an output port.)
Port Pi direction register (i = 0 to 8)
(addresses 416,516,816,916,C16,D16,1016,1116,1416)
b1
b0
b2
b3
b4
b5
b6
b7
At reset
RW
Note: Writing to bits 4 to 7 of the port P3 direction register is invalid and these bits are fixed to “0”
when they are read.
0
Port Pi0 direction selection bit
0
RW
1
Port Pi1 direction selection bit
0
RW
2
Port Pi2 direction selection bit
0
RW
3
Port Pi3 direction selection bit
0
RW
4
Port Pi4 direction selection bit
0
RW
5
Port Pi5 direction selection bit
0
RW
6
Port Pi6 direction selection bit
0
RW
7
Port Pi7 direction selection bit
0
RW
Pi7
b1
b2
b3
b4
b5
b6
b7
Bit
Corresponding
pin
Pi6
Pi5
Pi4
Pi3
Pi2
Pi1
Pi0
b0



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