4-Bit Single-Chip MicrocomputerThe HD404639R Series is a member of the HMCS400-series microcomputers designed to increase
program productivity with large-capacity memory. The HD404639R Series, completely compatible with
the HD404639 Series, reduces current dissipation in half and includes a high-speed version. Each
microcomputer has a high-precision dual-tone multi frequency (DTMF) generator, four Timers two serial
Interfaces voltage Comparator input capture circuit, 32-kHz Oscillator for Clock and four low-power
dissipation modes.
The HD404639R Series includes 5 chips: the HD404638R and HD40A4638R with 8-kword ROM; the
HD404639R and HD40A4639R with 16-kword ROM; the HD407A4639R with 16-kword PROM. By Renesas Technology
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HD404639R Pb-Free | HD404639R Cross Reference | HD404639R Schematic | HD404639R Distributor |
HD404639R Application Notes | HD404639R RoHS | HD404639R Circuits | HD404639R footprint |