APU4003T中文資料APLUS數(shù)據(jù)手冊PDF規(guī)格書

General Description

The APU4003T is an EEPROM-equipped high- performance 4-bit microcomputer. It contains not only all functions compatible with APU4003T, but also an EEPROM, providing customers such conveniences as on-board verification, customized code, small quantity sample production, etc.

This chip especially provides a security bit to protect the customer’s code.

Features

? Very low current dissipation.

? Wide operating voltage range.

? Supports both Ag and Li batteries.

? Powerful instruction set.

? 4-level subroutine nesting (including interrupt).

? 4 event-driven interrupts, 2 external and 2 internal.

? ROM size: 1024x15 bits.

? RAM size: 64x4 bits.

? Input ports: 2 ports/ 8 pins (S and M).

? Output port: 1 port/ 4 pins (P).

? Pseudo serial output port (P).

? Input/Output ports: 2 ports/ 8 pins (I/OA and I/OB).

? Control outputs: ALARM, LIGHT.

? LCD driver outputs (can drive up to 75 LCD segments).

? PROM option to select 4 LCD drive modes: static, duplex (1/2 duty 1/2 bias, 1/3 duty 1/2 bias or 1/3 duty 1/3 bias).

? PROM option permits LCD driver output pins to be used for DC output ports; up to 25 pins are available.

? Segment PLA circuit permits any layout on LCD panel.

? Built-in clock generator (crystal or RC).

? Built-in voltage doubler, halver, tripler.

? Endurance: More then 100 write cycles/word.

? Security bit for read/write protection.