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HD404652H Datasheet(PDF) 3 Page - Renesas Technology Corp |
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HD404652H Datasheet(HTML) 3 Page - Renesas Technology Corp |
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3 / 111 page  HD404654 Series 4-Bit Single-Chip Microcomputer Rev. 7.0 Sept. 1999 Description The HD404654 Series is a member of the HMCS400-series of microcomputers designed to increase program productivity with large-capacity memory. Each microcomputer has a high-precision dual-tone multi-frequency (DTMF) generator, three timers, serial interface, voltage comparator, and input capture circuit. The HD404654 Series includes three chips: the HD404652 with 2 k-word ROM; the HD404654 with 4 k- word ROM; and the HD4074654 with 4 k-word PROM (ZTAT ™ version). The HD4074654 is a PROM version (ZTAT ™ microcomputer). A program can be written to the PROM by a PROM writer, which can dramatically shorten system development periods and smooth the process from debugging to mass production. (The ZTAT ™ version is 27256-compatible.) ZTAT ™ : Zero Turn Around Time. ZTAT is a trademark of Hitachi Ltd. Features • 27 I/O pins and 5 dedicated input pins 10 high-current output pins: Six 15-mA sinks and four 10-mA sources • Three timer/counters • Eight-bit input capture circuit • Two timer outputs (including two PWM outputs) • One event counter input (including one double-edge function) • One clock-synchronous 8-bit serial interface • Voltage comparator (2 channels) • On-chip DTMF generator (f OSC = 400 kHz, 800 kHz, 2 MHz, 3.58 MHz or 4 MHz) • 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 |
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