EM73880
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
FUNCTION BLOCK DIAGRAM
RESET
CLK
LXOUT
LXIN
y
liminar
Pre
Reset
Control
Int. Clock
Generator
Clock
Generator
(slow)
Timing
Generator
Clock Mode
Control
System Control
Data pointer
Interrupt
Control
Time
Base
Instruction Decoder
Instruction Register
Stack pointer
ACC
Data Bus
ALU
Flag
Z
C
S
HR
Stack
RAM
LR
P0.0/WAKEUP0
P0.1/WAKEUP1
P0.2/WAKEUP2
P0.3/WAKEUP3
ROM
Timer/Counter
(TA,TB)
PC
VA
VB
V1
V2
V3
I/O Control
LCD
HTC
Speech Synthesizer
PWM
COM0~COM3
SEG0~SEG31
BZ1
PIN DESCRIPTIONS
Symbol
V
DD,
V
DD2
V
SS
RESET
Pin-type
Function
Power supply (+) / speech synthesizer power supply(+)
Power supply (-)
RESET-A
System reset input signal, low active
mask option :
none
pull-up
OSC-G
Capacitor connecting pin for internal high frequency OSC.
OSC-B/OSC-H Crstal/RC connecting pin for low speed clock source
OSC-B
Crstal/RC connecting pin for low speed clock source
INPUT-K
4-bit input port with IDLE releasing function
mask option :
wakeup enable, negative edge release, pull-up
wakeup enable, negative edge release, none
wakeup enable, positive edge release, pull-down
wakeup enable, positive edge release, none
wakeup disable, pull-up
wakeup disable, pull-down
wakeup disable, none
I/O-R
1-bit bidirection I/O port
CLK
LXIN
LXOUT
P0(0..3)/WAKEUP0..3
P4.0
* This specification are subject to be changed without notice.
P4.0
P4.1/TRGH
P4.2
P4.3
P8.0/WAKEUPA
P8.1(TRGB)/WAKEUPB
P8.2(INT0)/WAKEUPC
P8.3(TRGA)/WAKEUPD
BZ2
11.30.2001
2
EMC [ ELAN MICROELECTRONICS CORP ]
