HD404324FS datasheet(34/103 Pages) RENESAS

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HD404054 Series/HD404094 Series

Input/Output

The MCU has 27 input/output pins (D

0–D9, R0 0–R43) and 8 input pins (D12, D13, RC0, RD0– RD3, RE0). The

features are described below. Some input/output pins have different features between the HD404054 Series

and HD404094 Series. The differences between the HD404054 Series and HD404094 Series are listed in

table 19.

• A maximum current of 15 mA is allowed for each of the pins D

4 to D9 with a total maximum current of

less than 105 mA. In addition, D

0–D3 can each act as a 10-mA maximum current source.

• Some 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 R4

3/SO1 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.

• Pins D

0–D3 have built-in pull-down MOSs, and other input/output pins have built-in pull-up MOSs,

which can be individually turned on or off by software.

I/O buffer configuration is shown in figure 19 programmable I/O circuits are listed in table 20, and I/O pin

circuit types are shown in table 21.

Table 19

The differences between HD404054 Series and HD404094 Series

HD404054 Series

HD404094 Series

Large-current source pins (15 mA)

0–D 3

Large-current sink pins (10 mA)

4–D 9

8, D9

Intermediate voltage NMOS open-drain

pins (12 V)



4–D 7 (output only)

Pull-down MOS current pins

0–D 3

Pull-up MOS current pins

4–D 9, R0–R4

8, D9, R0–R4

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