HD404314H

HD404318 Series Rev. 6.0 Sept. 1998 Description The HD404318 Series is 4-bit HMCS400-series microcomputer with large-capacity memory designed to increase program productivity. Each microcomputer has an A/D converter and input capture timer built in. They also come with high-voltage I/O pins that can directly drive a fluorescent display. The HD404318 Series includes four chips: the HD404318 with 8-kword ROM; the HD404316 with 6kword ROM; the HD404314 with 4-kword ROM; the HD4074318 with 8-kword PROM. The HD4074318 is a PROM version ZTAT™ microcomputer. Programs 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 PROM program specifications are the same as for the 27256.) ZTAT ™: Zero Turn Around Time ZTAT is a trademark of Hitachi Ltd. Features 34 I/O pins  One input-only pin  33 input/output pins: 21 pins are high-voltage pins (40 V, max.) On-chip A/D converter (8-bit × 8-channel) Three timers  One event counter input  One timer output  One input capture timer 8-bit clock-synchronous serial interface (1 channel) Alarm output Built-in oscillators  Ceramic or crystal oscillator  External clock drive is also possible HD404318 Series Seven interrupt sources  Two by external sources  Three by timers  One each by the A/D converter and serial interface Two low-power dissipation modes  Standby mode  Stop mode Instruction cycle time 1 µs (f...