EM73880 データシートの表示（PDF） - ELAN Microelectronics
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EM73880 Datasheet PDF : 40 Pages
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PIN DESCRIPTIONS
Symbol
P4.1/TRGH
Pin-type
I/O-Q
P4(2,3)
I/O-Q
P8.0/WAKEUPA,
I/O-S
P8.2/INT0/WAKEUPC
P8.1(TRGB)/WAKEUPB I/O-S
P8.3(TRGA)/WAKEUPD
BZ1, BZ2
VA,VB, V1, V2, V3
COM0~COM3
SEG0~SEG31
TEST
EM73880
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
Function
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
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
2-bit bidirection I/O port with external interrupt source input only
P8.2 and IDLE 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
2-bit bidirection I/O port with time/counter A,B external input and IDLE
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
Speech output pin
Connect the capacitors for LCD bias voltage
LCD common output pins
LCD segment output pins
Tie Vss as package type, no connecting as COB type
FUNCTION DESCRIPTIONS
PROGRAM ROM (8K X 8 bits)
8 K x 8 bits program ROM contains user's program and some fixed data.
The basic structure of program ROM can be divided into 6 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 - 1FFFh : Except used as above function, the other region can be used as user's program region.
6. Address 1000h - 1FFFh : Fixed data stortage area.
* This specification are subject to be changed without notice.
11.30.2001 3
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