UPD750064CU-XXX データシートの表示（PDF） - NEC => Renesas Technology

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UPD750064CU-XXX

4 BIT SINGLE CHIP CMOS MICROCOMPUTERS

NEC => Renesas Technology 

µPD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)

6. PERIPHERAL HARDWARE FUNCTION

6.1 Port

The following three types of I/O ports are available.

• CMOS input (PORT0, 1, 11)

: 12

• CMOS input/output (PORT2, 3, 6)

: 12

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

Total

32

Table 6-1. Types and Features of Digital Ports

Port Name

Function

Operation and Features

Remarks

PORT0 4-bit input

When the serial interface function is used, the alternate-function Also used for the INT4, SCK,

pins function as output ports depending on the operation mode. SO/SB0, SI/SB1 pins.

PORT1

4-bit input only port.

Also used for the INT0 to

INT2/TI1, TI0 pins.

PORT2 4-bit input/output Can be set to input mode or output mode in 4-bit units.

Also used for the PTO0,

PTO1, PCL, BUZ pins.

PORT3

Can be set to input mode or output mode in 1-bit units.

–

PORT4

PORT5

4-bit input/output

(N-ch open drain,

13 V withstand

voltage)

Can be set to input mode or output

mode in 4-bit units. On-chip pull-up

resistor can be specified in 1-bit

units by mask option.

Ports 4 and 5 are paired

and data can be input/

output in 8-bit units.

PORT6 4-bit input/output Can be set to input mode or output mode in 1-bit units.

Also used for the KR0 to

KR3, AN4 to AN7 pins.

PORT11 4-bit input

4-bit input only port.

Also used for the AN0 to

AN3 pins.

6.2 Clock Generator

The clock generator generates clocks which are supplied to the peripheral hardware in the CPU. Figure 6-1

shows the configuration of the clock generator.

Operation of the clock generator is determined by the processor clock control register (PCC) and system clock

control register (SCC).

Two types of system clocks are available; main system clock and subsystem clock.

The instruction execution time can be changed.

• 0.95 µs, 1.91 µs, 3.81 µs, 15.3 µs (@ 4.19-MHz operation with main system clock)

• 0.67 µs, 1.33 µs, 2.67 µs, 10.7 µs (@ 6.0-MHz operation with main system clock)

• 122 µs (@ 32.768-kHz operation with subsystem clock)

Data Sheet U10165EJ2V0DS00

23

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