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HE84771(S) Datasheet

  • HE84771(S)

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KING BILLION ELECTRONICS CO., LTD
椐?鍎?闆?瀛?鑲?錕?frac12; 鏈?闄?鍏?鍙?/div>
HE84771
HE80000 SERIES
A. Introduction
HE84771 is a member of 8-bit Micro-controller series developed by King Billion Electronics Ltd. User
can chose any one of combination among 32COM錛?/div>
銆?096
dots LCD Driver + 24 Bit I/O Port銆戔€︺€?328
dots LCD Driver + 48 Bit I/O Port銆?48COM錛?/div>
or
銆?376
dots LCD Driver + 24 Bit I/O Port銆?/div>
銆?224
dots
鈥?/div>
LCD Driver + 48 Bit I/O Port銆?64COM錛?/div>
or
銆?144
dots LCD Driver + 24 Bit I/O Port銆?/div>
銆?608
dots LCD
鈥?/div>
Driver + 48 Bit I/O Port銆憃r 80COM錛?/div>
銆?400
dots LCD Driver + 24 Bit I/O Port銆戔€︺€?480 dots LCD
Driver + 48 Bit I/O Port銆? Users can choose one of LCD configuration through 鈥淢ask Option鈥? With
built-in regulator circuit, LCD display will be stable. The built-in OP comparator can be used with
(light銆乿oice銆乼emperature銆乭umility) sensor and used as battery low detection. 7-bit current-type D/A
converter and PWM device provide the complete speech output mechanism. The 1M ROM Size can be
used in the storage of speech銆乬raphic銆乼ext etc.. It can be used in Translator銆丏ata Bank銆丳ocket Dialer銆?/div>
Educational Toy銆丏igital Voice Recording System etc
The instruction set of HE8XXXX are quite easy to learn and simple to use. Only about thirty instructions
with four-type addressing mode are provided. Most of instructions take only 3 oscillator clocks (machine
cycles). The processing power is enough to most of battery operation system.
B. HE84771 Features
Operation Voltage錛?/div>
System Clock錛?/div>
Internal ROM錛?/div>
Internal RAM錛?/div>
Dual Clock System錛?/div>
2.4V 鈥?3.6V
4MHz ~ 8MHz
1M Bytes(256K Program ROM+768K Data ROM)
16K Bytes
Normal(Fast) clock:
32.768K ~ 8MHz(No Internal Clock)
Slow clock:
32.768KHz
Operation Mode錛?/div>
DUAL銆丗AST銆丼LOW銆両DLE銆丼LEEP Mode.
With WDT (WATCH DOG TIMER) to prevent deadlock condition.
24~48 bit Bi-directional I/O port. Mask Option can select PUSH-PULL or OPEN DRAIN output
mode for each I/O pin. 24 of them are shared with LCD segment pins.
The new built-in hardware auto scan keyboard (4*20) (shared with LCD SEG Pin) not only reduces
the hardware cost, but also reduces the firmware effort.
One built-in OP comparator.
One Voltage Detector with two detecting threshold Vth. (Vth=2.4V/2.4v).
Users can select any one of four LCD configuration---32COM*128SEG LCD , 48COM*112SEG
LCD , 64COM*96SEG LCD or 80COM*80SEG LCD. All of LCD configuration are B
TYPE(please refer to HE80000 user鈥檚 manual, section 4.3.9 LCD control register)銆侷t is built-in
type-III regulator, the LCD can display stably. The highest LCD voltage LVP must small than 8.5
Volt.
LCDC[7:0]=[錛嶏紞錛岹
GGBE]銆侴
: gray level control銆丅 :blank(1)銆丒: enable(1)銆?/div>
Normally, The LCD refresh rate is around 64 Hz. But for this IC, 32 COM configuration ~= 170 Hz
and 48 COM configuration ~= 110 Hz
One 7-bit current-type DAC output.
PWM device. (No Rate Selection, connect with VDD & PWMP)
1
V2.43E

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