UPD75048CW 查看數據表（PDF） - NEC => Renesas Technology

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UPD75048CW

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75048

6. PERIPHERAL HARDWARE FUNCTIONS

6.1 PORT

I/O ports are classified into the following three inds:

• CMOS input (PORT0, 1, 11)

: 12

• CMOS I/O (PORT2, 3, 6, 7, 8, 9) : 24

• N-ch open-drain I/O (PORT4, 5, 10) : 12

Total

48

Table 6-1 Port Function

Port (Symbol)

PORT0

PORT1

PORT3*

PORT6

PORT2

PORT7

Function

4-bit input

4-bit input/output

Operation/Feature

Can be read or tested regardless

of the operation mode of the

shared pin.

Can be specified for input/output

in 1-bit units.

Can be specified for input/output

in 4-bit units. Ports 6 and 7 can

be paired to input/ output data

in 8-bit units.

PORT4*

PORT5*

PORT10*

Can be specified for input/output

4-bit input/output in 4-bit units. Ports 4 and 5 can

(N-ch open-drain, be paired to input/output data in

can sustain with 10V) 8-bit units.

PORT8

PORT9

PORT11

4-bit input/output

4-bit input

Can be specified for input/output

in 4-bit units.

4-bit input-only port.

Remarks

Also serves as the SO/SB0, SI/SB1,

SCK, INT0 to 2, INT4, and TI0 pins

Port 6 can also serve as the KR0 to

KR3 pins.

Port 2 can also serve as the PTO0,

PPO, PCL, and BUZ pins.

Also serves as the KR4 to KR7 pins.

Whether or not the internal pull-up

resistor is provided can be specified

for each bit by mask option.

Port 10 can also serve as the MAR,

MAI, MAZ, and MAT pins.

Port 11 can also serve as the

AN0 to AN3 pins.

*: Can directly drive LED.

22

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