H8S2245 datasheet(293/818 Pages) RENESAS

tên linh kiện	H8S2245

Giải thích chi tiết về linh kiện	Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series

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Section 8 I/O Ports

Rev.3.00 Mar. 26, 2007 Page 251 of 772

REJ09B0355-0300

Modes 2 and 6

In modes 2 and 6, port B pins function as address outputs or input ports. Input or output can be

specified on an individual bit basis. Setting a PBDDR bit to 1 makes the corresponding port B pin

an address output, while clearing the bit to 0 makes the pin an input port.

Note:

Modes 2 and 6 cannot be used in the H8S/2240.

Port B pin functions in modes 2 and 6 are shown in figure 8.12.

A15

A14

A13

A12

A11

A10

PB7

PB6

PB5

PB4

PB3

PB2

PB1

PB0

(input)

When PBDDR = 1

When PBDDR = 0

(output)

Port B

Figure 8.12 Port B Pin Functions (Modes 2 and 6)

Modes 3 and 7

In modes 3 and 7, port B pins function as I/O ports. Input or output can be specified for each pin

on an individual bit basis. Setting a PBDDR bit to 1 makes the corresponding port B pin an output

port, while clearing the bit to 0 makes the pin an input port.

Note:

Modes 3 and 7 cannot be used in the H8S/2240.

Port B pin functions in modes 3 and 7 are shown in figure 8.13.

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