W742S81A Datasheet, PDF (5/47 Pages) Winbond – 4 BIT MICROCONTROLLER

W742S81A
5. BLOCK DIAGRAM
SEG0~SEG39
COM0~COM3
VDD1-2 DH1-2
RAM
(2048*4)
VPP
DATA
MODE
Flash
EEROM
(16384*16)
(look_up table
64K*4)
+1(+2)
PC
STACK
(16 Levels)
Timer 0
(8 Bit)
Watch Dog Timer
(4 Bit)
LCD DRIVER
ACC
ALU
PORT RA
PORT RB
PORT RC
Central Control
Unit
IEF
HEF PEF
HCF EVF SEF
PSR0 SCR
PR
PM0 MR0 MR1
. . . ^{PM1 DTMF DTCR}
PORT RD
PORT RE
PORT RF
DTMF
Generator
Timer 1
(8 Bit)
Modulation
Frequency
Pulse
SEL
MUX
Divider 1
(12/14 Bit)
Divider 0
(14 Bit)
Timing Generator
XIN1 XOUT1 XIN2 XOUT2
RA0-3
RB0-3
RC0-3
RD0-3
RE0-3
RF0-3
DTMF
MFP
VDD
VSS
RES
Publication Release Date: March 2003
-5-
Revision A1