King Billion Electronics Co., Ltd.
駿
億 電 子
股
�½
有 限
公
司
HE89C21
HE80000 SERIES
- Table of Contents -
1.
2.
3.
4.
5.
6.
6.1.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
General Description ___________________________________________________________________1
Features _____________________________________________________________________________2
Pin Description _______________________________________________________________________2
Pad Diagram _________________________________________________________________________4
Pad Coordinations ____________________________________________________________________4
LCD Power Supply ____________________________________________________________________5
LCDC Control register ______________________________________________________________6
LCD RAM Map ______________________________________________________________________6
Oscillators ___________________________________________________________________________7
General Purpose I/O___________________________________________________________________8
Timer1 ____________________________________________________________________________9
Timer2 ___________________________________________________________________________10
Watch Dog Timer __________________________________________________________________12
Low Voltage Reset _________________________________________________________________13
Dual-Tone Multiple Frequency Generator______________________________________________13
Absolute Maximum Rating __________________________________________________________14
Recommended Operating Conditions _________________________________________________15
AC/DC Characteristics _____________________________________________________________15
Application Circuit_________________________________________________________________16
Important Note ____________________________________________________________________16
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
1
V1.0E
KB [ King blillion Electronics Co.,Ltd. ]
