HE89C21 Datasheet, PDF (1/16 Pages) King blillion Electronics Co.,Ltd. – 8-BIT MICRO-CONTROLLER

King Billion Electronics Co., Ltd.
駿億電子股份有限公司
HE89C21
HE80000 SERIES
- Table of Contents -
1. General Description ___________________________________________________________________1
2. Features _____________________________________________________________________________2
3. Pin Description _______________________________________________________________________2
4. Pad Diagram _________________________________________________________________________4
5. Pad Coordinations ____________________________________________________________________4
6. LCD Power Supply ____________________________________________________________________5
6.1. LCDC Control register ______________________________________________________________6
7. LCD RAM Map ______________________________________________________________________6
8. Oscillators ___________________________________________________________________________7
9. General Purpose I/O___________________________________________________________________8
10. Timer1 ____________________________________________________________________________9
11. Timer2 ___________________________________________________________________________10
12. Watch Dog Timer __________________________________________________________________12
13. Low Voltage Reset _________________________________________________________________13
14. Dual-Tone Multiple Frequency Generator______________________________________________13
15. Absolute Maximum Rating __________________________________________________________14
16. Recommended Operating Conditions _________________________________________________15
17. AC/DC Characteristics _____________________________________________________________15
18. Application Circuit_________________________________________________________________16
19. Important Note ____________________________________________________________________16
20. Updated Record ___________________________________________________________________16
1. General Description
HE89C21 is a member of 8-bit Micro-controller series developed by King Billion Electronics for telecom
applications. This chip has 4-COM x 32-SEG LCD driver with built-in regulator to provide stable visual
effect over the battery life, 16-bit general purpose I/O port, DTMF generator for the dialing tone
generation. It is suitable for application in feature telephone products.
The instruction set of HE80000 are easy to learn and simple to use. Thirty-two instructions with four-type
January 20, 2003
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V1.0E