Description

The HD404328 Series is an HMCS400-Series microcomputer designed to increase program productivity and also to incorporate large-capacity memory. Each microcomputer has an LCD controller/driver, A/D converter, and zero-crossing detection circuit. Each also has a 32.768-kHz oscillator and low-power dissipation modes.

Features

• 4,096-word × 10-bit ROM (HD404324, HD404324U)

6,144-word × 10-bit ROM (HD404326, HD404326U)

• 8,192-word × 10-bit ROM (HD404328, HD404328U)

16,384-word × 10-bit PROM (HD4074329, HD4074329U)

• 280-digit × 4-bit RAM (HD404324, HD404324U, HD404326, HD404326U, HD404328, HD404328U)

536-digit × 4-bit RAM (HD4074329, HD4074329U)

• 35 I/O pins

― 2 input pins

― 33 input/output pins, including 8 high-current pins (15 mA, max.) and 16 pins multiplexed with LCD segment pins

• Three timer/counters

• 8-bit clock-synchronous serial interface

• 8-bit × 4-channel A/D converter

• 12-di git LCD cont rol l er/ driver (24 S EG × 4 C OM )

(HD404324U, HD404326U, HD404328U, HD4074329U: External LCD voltage division resistors are required)

• Zero-crossing detection circuit

• Eight interrupt sources

― Two external sources, including one double-edge function

― Six internal sources

• Subroutine stack

― Up to 16 levels, including interrupts

• Four low-power dissipation modes

― Subactive mode

― Standby mode

― Watch mode

― Stop mode

• Built-in oscillator

― Crystal or ceramic oscillator (external clock also enabled)

― 32.768 kHz crystal subclock

• Instruction cycle time: 2 µs (fOSC = 4 MHz)

• Two operating modes

― MCU mode

― PROM mode (HD4074329, HD4074329U)