W541E20X Datasheet, PDF (3/14 Pages) Winbond – 4 BIT FLASH EPROM MICROCONTROLLER

BLOCK DIAGRAM
Preliminary W541E20X
RAM
(128*4)
VPP (RES)
DATA (RA3)
MODE (INT)
Flash
EEPROM
(2048*16)
(look_up table
2K*4)
+1(+2)
PC
STACK
(8 Levels)
ACC
ALU
Central Control
Unit
IEF HEF PEF
HCF EVF SEF
PSR0 PSR1 PSR2
PR MR0 PM0
. ..
PORT RA
PORT RB
PORT RC
PORT RD
PORT RT
Serial I/O
SEL
MUX
RA0 to 3
RB0 to 3
RC0 to 3
RD0 to 3
RE0 to 3
(RE0/DOUT,
RE1/CLKO,
RE2/DIN,
RE3/CLKI)
Timer 0
(8-bit)
Timer 1
(8-bit)
Modulation
Frequency
Pulse
SEL
MUX
Watchdog Timer
(4-bit)
Divider 0
(14-bit)
Timing Generator
XIN XOUT
MFP
VDD
VSS
RES
INT
Publication Release Date: June 2003
-3-
Revision A2