HD404364 查看數據表（PDF） - Renesas Electronics

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HD404364

4-bit HMCS400-Series microcomputer

Renesas Electronics 

HD404369 Series

Input/Output

The MCU has 53 input/output pins (D0–D13, R0–R9) and an input pin (RA1). The features are described

below.

• Eight pins (R1–R2) are high-current (15 mA max) input/output with intermediate voltage NMOS open

drain pins.

• The D0–D4, R0, R3–R5 input/output pins are multiplexed with peripheral function pins such as for the

timers or serial interface. For these pins, the peripheral function setting is done prior to the D or R port

setting. Therefore, when a peripheral function is selected for a pin, the pin function and input/output

selection are automatically switched according to the setting.

• Input or output selection for input/output pins and port or peripheral function selection for multiplexed

pins are set by software.

• Peripheral function output pins are CMOS output pins. Only the R02/SO pin can be set to NMOS open-

drain output by software.

• In stop mode, the MCU is reset, and therefore peripheral function selection is cancelled. Input/output

pins are in high-impedance state.

• Each input/output pin except for R1 and R2 has a built-in pull-up MOS, which can be individually

turned on or off by software.

I/O buffer configuration is shown in figure 26, programmable I/O circuits are listed in table 21, and I/O pin

circuit types are shown in table 22.

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