APU4003T

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 2internal.
􀁹􀀃 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 biasor 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 LCDpanel.
􀁹􀀃 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.

Pinout




Specifications

Name	Symbol	Rating	Unit
Maximum Supply Voltage	VSS1/2	-0.3~+5.5	V
	VSS3	-0.3~+8.5	V
Maximum Input Voltage	V1N1	-0.3 to VDD+0.3	V
Maximum Output Voltage	VOUT1	-0.3 to VDD1+0.3	V
	VOUT2	-0.3 to VDD2+0.3	V
	VOUT3	-0.3 to VDD3+0.3	V
Maximum Operating Temperature	TOPG	0 to +70
Maximum Storage Temperature	TSTG	-25 to +125

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.