UPD8022

NEe Microcomputers, Inc. NEe ,.,. PD8022 SINGLE CHIP 8-BIT MICROCOMPUTER WITH ON-CHIP AID CONVERTER DESCR IPTION The NEC I1PD8022 is designed for low cost, high volume applications requiring large ROM space, analog to digital conversion capability, a capacitive touchpanel keyboard interface and/or a power line time base. The I1PD8022 satisfies these requirements by integrating on onechip,an 8·bit I1PD8021 type processor with 2K of ROM, a 2 channel 8-bit A/D converter, a high impedance comparator input port, and a zero crossing detector. FEATU RES 8-Bit Processor, ROM, RAM, I/O and Clock Generator Single +5V Supply (4.5V to 6.5V) NMOS Silicon Gate Technology 2K x 8 ROM, 64 x 8 RAM, 26 I/O Lines On Chip 8-Bit A/D Converter with 2 Input Channels 8.311s Instruction Cycle Timer Instructions are a Subset of I1PD8048; Superset of I1PD8021 Internal Timer/Event Counter External and Timer/Counter Interrupts On-Chip Zero-Cross Detector High Imped...