HD4074449

HD404449 Series Description The HD404449 Series is a HMCS400-series microcomputer designed to increase program productivity with large-capacity memory. Each microcomputer has four timers, two serial interfaces, A/D converter, input capture circuit, 32-kHz oscillator for clock, and four low-power dissipation modes. The HD404449 Series includes three chips: the HD404448 with 8-kword ROM; the HD404449 with 16kword ROM; and HD4074449 with 16-kword PROM (ZTAT™ version). The HD4074449 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 8,192-word × 10-bit ROM (HD404448) 16,384-word × 10-bit ROM (HD404449 and HD4074449) 1,152-digit × 4-bit RAM 64 I/O pins, including 10 high-current pins (15 mA, max) Four timer/counters Eight-bit input capture circuit Three timer outputs (including two PWM outputs) Two event counter inputs (including one double-edge function) Two clock-synchronous 8-bit serial interfaces A/D converter (4-channel × 8-bit) Built-in oscillators  Main clock: 4-MHz ceramic oscillator or crystal (an external clock is also possible)  Subclock: 32.768-kHz crystal Eleven interrupt sources  Four by external sources, including two double-edge function  Seven by internal sources...