EM73469A Datasheet, PDF (2/33 Pages) ELAN Microelectronics Corp – 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

FUNCTION BLOCK DIAGRAM
EM73469A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
RESET
CLK LXOUT LXIN
Reset
Control
Clock
Generator
Clock
Generator
(slow)
Timing
Generator
Sleep Mode
Control
System Control
Interrupt
Control
Instruction Decoder
Instruction Register
Data pointer
ACC
ALU
Stack pointer
Stack
Time
Base ^{Timer/Counter}
(TA,TB)
ROM
PC
Flag
ZC S G
ROM
HR LR
DP
VA
SP
VB
V1
LCD
V2
V3
HTC
I/O Control
P0.0/WAKEUP0
P0.1/WAKEUP1
P0.2/WAKEUP2
P0.3/WAKEUP3
PIN DESCRIPTIONS
Symbol
V_DD
V_SS
RESET
CLK
LXIN
LXOUT
P0(0..3)/WAKEUP0..3
P4.0/SOUND
Pin-type
Function
Power supply (+)
Power supply (-)
RESET-A
System reset input signal, low active
mask option :
none
pull-up
OSC-I
RC clock source connecting pin
OSC-B/OSC-H1 Crystal/RC connecting pin for low speed clock source
OSC-B
Crystal 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 or inverse sound effect output
mask option :
SOUND enable, high current push-pull
SOUND disable, open-drain
* This specification are subject to be changed without notice.
1.9.2001 ₂