UPD17217CT-XXX View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD17217CT-XXX

4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER

NEC => Renesas Technology 

µPD17215, 17216, 17217, 17218

3.7 Switching Bit I/O

The I/O which can be set in the input or output mode in bit units is called a bit I/O. P0E is a bit I/O port, which can be

set in the input or output mode in bit units by the register file shown below. When the mode is changed from input to output,

the P0E output latch contents are output to the port lines, as soon as the mode has been changed.

3

2

1

0

P0EBIO3 P0EBIO2 P0EBIO1 P0EBIO0

Address:

RF : 27H

On reset:

0H

R/W:

R/W

P0EBIO0 Sets P0E0 Input/Output Mode

0

Sets P0E0 in input mode

1

Sets P0E0 in output mode

P0EBIO1 Sets P0E1 Input/Output Mode

0

Sets P0E1 in input mode

1

Sets P0E1 in output mode

P0EBIO2 Sets P0E2 Input/Output Mode

0

Sets P0E2 in input mode

1

Sets P0E2 in output mode

P0EBIO3 Sets P0E3 Input/Output Mode

0

Sets P0E3 in input mode

1

Sets P0E3 in output mode

26

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