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Description

The HD404054 Series and HD404094 Series are HMCS400-series microcomputers designed to increase program productivity with large-capacity memory. Each microcomputer has three timers, one serial interface, comparator, input capture circuit.

Features

? The differences between HD404054 Series and HD404094 Series

? 27 I/O pins and 8 dedicated input pins

? Three timer/counters

? Eight-bit input capture circuit

? Two timer outputs (including two PWM outputs)

? One event counter inputs (including one double-edge function)

? One clock-synchronous 8-bit serial interface

? Comparator (2 channels)

? Built-in oscillators

?- Main clock: Ceramic or crystal oscillator (an external clock is also possible)

? Six interrupt sources

?- Two by external sources

?- Four by internal sources

? Subroutine stack up to 16 levels, including interrupts

? Two low-power dissipation modes

?- Standby mode

?- Stop mode

? One external input for transition from stop mode to active mode

? Instruction cycle time: 1 ?s (fOSC = 4 MHz at 1/4 division ratio)

?- 1/4, or 1/32 division ratio can be selected by hardware

? Two operating modes

?- MCU mode

?- MCU/PROM mode (HD4074054, HD4074094)