UPD75112GF-XXX-3BE View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD75112GF-XXX-3BE

4-Bit Single Chip-Microcomputer

NEC => Renesas Technology 

µPD75112(A), 75116(A)

5. Peripheral Hardware Functions

5.1 Digital Input/Output Port

The digital input/output port has the following tree types.

• CMOS input (PORT0, 1)

:8

• CMOS input/output (PORT 2 to PORT 9)

: 32

• N-ch open-drain input/output (PORT 12 to PORT 14): 12

Total

52

Table 5-1 Functions of Digital Ports

Port (Code)

PORT0

PORT1

PORT3

PORT6

PORT2

PORT4

PORT5

PORT7

PORT8

PORT9

PORT12

PORT13

PORT14

Functions

4-bit input

4-bit input/

output

4-bit input/

output

(N-ch open-

drain, 12 V

withstand

voltage)

Operations and Features

Read or test always enable irrespectively of the operating mode

of dual-function pins.

Can be set bit-wise to the input or output mode.

Remarks

Share the pins with SI, SO, SCK and

INT0 to 4.

Can be set in 4-bit units to the input or output mode.

Ports 4 and 5, 6 and 7, 8 and 9 can form pairs and data can be

input/output in 8-bit units.

Port 2 shares the pin with PTO0,

PTO1 and PCL.

Can be set in 4-bit units the input or output mode.

On-chip pull-up registers can be

Ports 12 and 13 can form a pair and data can be input/output in 8- specified bit-wise by mask option.

bit units.

5.2 Clock Generator

The clock generator is a circuit which supplies the CPU

and peripheral hardware with various clocks and con-

trols the CPU operating mode.

The instruction execution time can be changed.

• 0.95 µs/1.91 µs/15.3 µs (at 4.19 MHz operation)

14

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