Description The HD404849 series of HMCS400-series microcomputers is designed to increase program productivity and also incorporate large-capacity memory. Each microcomputer has an LCD controller/driver, A/D converter, input capture circuit, 32-kHz oscillator for clock use, and four low-power dissipation modes. Features • 35 I/O pins, including nine high-current pins (15 mA, max.), eight pins multiplexed with LCD segment pins, and four pins multiplexed with analog input pins • Four timer/counters • Eight-bit input capture circuit • Three timer outputs (including two PWM outputs) • Two event counter inputs (including one in which the detection edge is programmable) • Clock-synchronous 8-bit serial interface • A/D converter (8 channels × 8 bits) - Operation voltage 2.7 V to 6.0 V • LCD driver (32 segments × 4 commons) • Built-in oscillators - Main clock: Can be driven by ceramic oscillator, crystal oscillator, or external clock. - Subclock: 32.768-kHz crystal • Ten interrupt sources - Four by external sources, including two in which the detection edge is programmable - Six by internal sources • Subroutine stack up to 16 levels, including interrupts • Four low-power dissipation modes - Standby mode - Stop mode - Watch mode - Subactive mode • One external input for transition from stop mode to active mode • Instruction cycle time: 0.89 µs (fOSC = 4.5 MHz) • Operation voltage - VCC = 2.7 V to 6.0 V (subactive mode: 2.2 V to 6.0 V) (HD404848, HD404849) - VCC = 2.7 V to 5.5 V (HD4074849) • Two operating modes - MCU mode (HD404848, HD4048412, HD404849) - MCU/PROM mode (HD4074849 only)
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