Apuls Intergrated Circuits APU4003
The APU4003 is a single chip 4-bit micro-controller with LCD drivers. It can drive up to 3 common times or 25 segments, i.e. This 4-bit micro-controller contains a 4-bit parallel processing ALU, 1024x15-bit program ROM, 64x4-bit data RAM, input/output ports, alarm driver, timer, clock generator, crystal and RC oscillator circuit, LCD driver and 79 powerful instructions in a single chip.
| Part No. |
APU4003 |
| Datasheet |
APU4003
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| Manufacturer |
 Apuls Intergrated Circuits |
| Description |
4-BIT MICRO-CONTROLLER WITH LCD DRIVER/ 1K WORD |
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Stock & Price
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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 y ROM size: 1024x15 bits y RAM size: 64x4 bits y Input ports: 2 ports/8 pins (S and M) y Output port: 1 port/4 pins (P) y Pseudo serial output port (P) y Input/output ports: 2 ports/8 pins (I/OA and I/OB) y y y y y y y Control outputs: ALARM, LIGHT y LCD driver outputs (can drive up to 75 LCD segments) y Mask 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) y Mask option permits LCD driver output pins to be used for DC output ports; up to 25 pins are available y Segment PLA circuit permits any layout on LCD panel y Built-in clock generator (crystal or RC) y Built-in voltage doubler, halver, tripler GENERAL DESCRIPTION
a 75-segment LCD driver. The HALT instruction can be used to stop all internal operations other than timer, clock generator, crystal/RC oscillator and LCD driver.
