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)
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