mpc89x51a Megawin Technology, mpc89x51a Datasheet - Page 8

• Manufacturer Part Number: mpc89x51a
• Description: 8-bit Micro-controller
• Manufacturer: Megawin Technology

Block Diagram
8
RESET
PSEN
ALE
EA
B Register
XTAL1
RAM ADDR
Control
Register
Unit
ACC
XTAL2
TMP2
PSW
MPC89x51A Data Sheet
MPC89x51A Block Diagram
ALU
Port1 Latch
Port1 Driver
P1.0 ~ P1.7
RAM256
TMP1
WDT
P2.0 ~ P2.7
Port3 Latch
Port3 Driver
Port2 Driver
Port2 Latch
P3.0 ~ P3.7
Stack Pointer
Port4 Latch
Port4 Driver
P0.0 ~ P0.7
P4.0 ~ P4.3
Timer0/1
Port0 Driver
Timer2
Port0 Latch
UART
MEGAWIN
Flash ROM
Generator
Address
Program
Counter
ISP
ERAM
DPTR