UPD75064CU データシートの表示（PDF） - NEC => Renesas Technology

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UPD75064CU

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)

5. PERIPHERAL HARDWARE FUNCTIONS

5.1 Ports

The following three types of I/O port are provided:

• CMOS input ports (PORT0, 1, 11)

: 12

• CMOS input/output ports (PORT2, 3, 6)

: 12

• N-ch open-drain input/output ports (PORT4, 5) : 8

Total

32

Table 5-1. Functions of Port

Port (Symbol)

PORT0

PORT1

PORT3Note

PORT6

PORT2

PORT4Note

PORT5Note

PORT11

Function

4-bit input

4-bit I/O

4-bit I/O

(N-ch open-drain,

can withstand 10 V)

4-bit input

Operation/features

Can be read or tested regard-

less of the operation mode of

the dual function pin.

Can be specified for input/

output in bit units.

Can be specified for input/

output in 4-bit units.

Can be specified for input/

output in 4-bit units.

Ports 4 and 5 can be paired to

input/output data in 8-bit units.

4-bit port dedicated to input

Remarks

Shared with the SO/SB0, SI/SB1, SCK,

INT0-2, 4, and TI0 pins.

Port 6 is shared with pins KR0 to KR3 and

pins AN4 to AN7.

Port 2 is shared with PTO0, PCL, and BUZ

pins.

Whether or not the internal pull-up

resistor is provided can be specified for

each bit by mask option.

Port 11 is shared with pins AN0 to AN3.

Note Can directly drive LEDs.

18

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