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EM73461A Datasheet(PDF) 3 Page - ELAN Microelectronics Corp

Part # EM73461A
Description  4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM73461A Datasheet(HTML) 3 Page - ELAN Microelectronics Corp

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* This specification are subject to be changed without notice.
EM73461A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
1.5.2001
Preliminary
Symbol
Pin-type
Function
SOUND disable, low current push-pull
SOUND disable, normal current push-pull
SOUND disable, high current push-pull
P4.1/TRGH
I/O-Q
1-bit bidirection I/O port with HTC external input
mask option :
NMOS open-drain
PMOS open-drain
low current push-pull
normal current push-pull
high current push-pull
P4(2,3)
I/O-Q
2-bit bidirection I/O port with high current source
mask option :
NMOS open-drain
PMOS open-drain
low current push-pull
normal current push-pull
high current push-pull
P8.0(INT1)/WAKEUPA, I/O-S
2-bit bidirection I/O port with external interrupt source input and IDLE
P8.2(INT0)/WAKEUPC
releasing function
mask option :
wakeup enable, low current push-pull
wakeup enable, normal current push-pull
wakeup disable, open-drain
wakeup disable, low current push-pull
wakeup disable, normal current push-pull
P8.1(TRGB)/WAKEUPB I/O-S
2-bit bidirection I/O port with time/counter A,B external input and IDLE
P8.3(TRGA)/WAKEUPD
releasing function
mask option :
wakeup enable, low current push-pull
wakeup enable, normal current push-pull
wakeup disable, open-drain
wakeup disable, low current push-pull
wakeup disable, normal current push-pull
SOUND
Melody output
VA,VB, V1, V2, V3
Connect the capacitors for LCD bias voltage
COM0~COM3
LCD common output pins
SEG0~SEG31
LCD segment output pins
TEST
Tie Vss as package type, no connecting as COB type.
PIN DESCRIPTIONS
FUNCTION DESCRIPTIONS
PROGRAM ROM (4K X 8 bits)
4 K x 8 bits program ROM contains user's program and some fixed data.
The basic structure of program ROM can be divided into 5 parts.
1. Address 000h: Reset start address.
2. Address 002h - 00Ch : 6 kinds of interrupt service routine entry addresses.
3. Address 00Eh-086h : SCALL subroutine entry address, only available at 00Eh,016h,01Eh,026h, 02Eh,
036h, 03Eh, 046h, 04Eh, 056h, 05Eh, 066h, 06Eh, 076h, 07Eh, 086h.
4. Address 000h - 7FFh : LCALL subroutine entry address.
5. Address 000h - FFFh : Except used as above function, the other region can be used as user's program region.


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