HD4043312 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD4043312

4-bit HMCS400-Series microcomputer

Hitachi -> Renesas Electronics 

HD404339 Series

I/O Ports

The MCU has 53 input/output pins (D0–D13, R00–R93) and one input-only pin (RA1).

• The 30 pins consisting of ports D0–D13, R1, R2, R8, and R9 are all high-voltage I/O pins. RA1 is a high-

voltage input-only pin. The high-voltage pins can be equipped with or without pull-down resistance, as

selected by the mask option.

• All standard voltage output pins are CMOS output pins. However, the R02/SO pin can be programmed

for NMOS open-drain output.

• In stop mode, input/output pins go to the high-impedance state.

• All standard voltage input/output pins have pull-up MOS built in, which can be individually turned on

or off by software (Table 5).

Pull-up MOS on/off settings can be made independently of settings as on-chip supporting module pins.

Table 5 Control of Standard I/O Pins by Program

MIS3 (bit 3 of MIS)

DCR

PDR

CMOS buffer PMOS

NMOS

Pull-up MOS

Note: — indicates off.

0

1

0

1

0

1

0

1

0

1

0

1

0

1

—

—

—

On

—

—

—

On

—

—

On

—

—

—

On

—

—

—

—

—

—

On

—

On

30

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