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HE847721(S) Datasheet

  • HE847721(S)

  • 29頁

  • ETC

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King Billion Electronics Co., Ltd
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HE847721
HE80000 SERIES
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General Description ___________________________________________________________________1
Features _____________________________________________________________________________2
Functional Block Diagram ______________________________________________________________3
Pin Description _______________________________________________________________________3
Pad Location _________________________________________________________________________6
LCD RAM Map ______________________________________________________________________8
LCD Power Supply ___________________________________________________________________11
LCDC Control register _____________________________________________________________14
Oscillators __________________________________________________________________________14
General Purpose I/O__________________________________________________________________16
Key Scan Circuit___________________________________________________________________18
Timer1 ___________________________________________________________________________19
Timer2 ___________________________________________________________________________20
Time Base Interrupt________________________________________________________________22
Watch Dog Timer __________________________________________________________________22
Digital-to-Analog Converter _________________________________________________________23
Pulse-Width Modulation ____________________________________________________________24
Low Voltage Detection ______________________________________________________________25
Absolute Maximum Rating __________________________________________________________25
Recommended Operating Conditions _________________________________________________25
AC/DC Characteristics _____________________________________________________________26
Application Circuit_________________________________________________________________27
Important Note ____________________________________________________________________28
Updated Record ___________________________________________________________________29
1. General Description
HE847721 is a member of 8-bit Micro-controller series developed by King Billion Electronics. Four LCD
driver configurations, 32 COM x 128 SEG, 48 COM x 112 SEG, 64 COM x 96 SEG or 80 COM x 80
April 29, 2003
Page 1 of 29
V1.0
This specification is subject to change without notice. Please contact sales person for the latest version before use.

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