HD404818

HD404818 Series 4-Bit Single-Chip Microcomputer Preliminary Rev. 2.0 Sept. 1998 Description T he H D4 04 81 8 Se ri es of 4-bit single-chip HMCS400 series microcomputers provide high program productivity. It incorporates a large size memory, LCD controller/driver, voltage comparator, and 32-kHz watch oscillator circuit. The HD404818 Series has both standard voltage versions and low voltage versions available. The standard voltage versions operate at 4.0 V to 6.0 V (mask ROM version) and 4.0 V to 5.5 V (PROM version), while the low voltage versions operate at 2.7 V to 6.0 V (mask ROM) and 3.0 V to 5.5 V (PROM). Low voltage versions include an L in their product name. Standard voltage versions: HD404812, HD404814, HD404816, HD404818, HD4074818 Low voltage versions: HD40L4812, HD40L4814, HD40L4816, HD40L4818, HD407L4818 ZTAT TM : Zero Turn Around Time ZTAT is a trademark of Hitachi Ltd. w Features w w .D at aS 2048-word × 10-bit ROM (HD404812, HD40L4812) 4096-word × 10-bit ROM (HD404814, HD40L4814) 6144-word × 10-bit ROM (HD404816, HD40L4816) 8192-word × 10-bit ROM (HD404818, HD40L4818, HD4074818, HD407L4818) 1184-digit × 4-bit RAM 30 I/O pins, including 10 high-current output pins, all CMOS and programmable as I/O pull-up MOS LCD controller/driver (32 segments × 4 commons) Three timer/counters Clock-synchronous 8-bit serial interface Six interrupt sources  Two by external sources  Four by internal sources he et 4U .c om www.DataSheet4U.com T...