Description

The HD404374, HD404384, and HD404389 Series comprise low-voltage, 4-bit single-chip microcomputers equipped with four 10-bit A/D converter channels, a serial interface, and large-current I/O pins. These devices are suitable for use in applications requiring high resolution A/D converter control, such as battery chargers.

The HD404082 and HD404084 series offer less advanced features than the HD404384 series. They are 4-bit microcomputers that support low-voltage operation for backward software compatibility.

HD404374 Series microcomputers have a 32.768 kHz sub-resonator for realtime clock use, providing a time counting facility, and a variety of low-power modes to reduce current drain.

Features

• 20 I/O pins

Large-current I/O pins (source: 10 mA max.):4

Large-current I/O pins (sink: 15 mA max.):4

Analog input multiplexed pins: 4 (HD404374, HD404384, and HD404389 Series)

• 8-bit timer: 1 channel

16-bit timer: 1 channel (Can also be used as two 8-bit timer channels)

• Two timer outputs (including PWM output)

• Event counter inputs (edge-programmable)

• Clock-synchronous 8-bit serial interface

• A/D converter

4 channels × 10-bits (HD404374 and HD404384 Series)

6 channels × 10-bits (HD404389 Series)

None (HD404082 and HD404084 Series)

Note: * CR oscillation in an optional function.

• Interrupts

External: 2 (including one edge-programmable)

Internal : 5 (HD404374/HD404384/HD404389 Series)

: 4 (HD404082/HD404084 Series)

• Subroutine stack up to 16 levels, including interrupts

• Low-power dissipation modes

 HD404374 Series: 4

 HD404384, HD404389, HD404082, and HD404084 Series: 2

• Module standby (timers, serial interface, A/D converter)

• System clock division software switching (1/4 or 1/32)

• Inputs for return from stop mode (wakeup): 1

• Instruction execution time

Min. 0.89 µs (fOSC = 4.5 MHz, division by 1/4)

Min. 0.47 µs (fOSC = 8.5 MHz, division by 1/4)

• Operation voltage

1.8 V to 5.5 V

2.0 V to 5.5 V (ZTATTM)