MPC89L54A Megawin Technology, MPC89L54A Datasheet - Page 7

• Manufacturer Part Number: MPC89L54A
• Description: 8-bit micro-controller
• Manufacturer: Megawin Technology

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MEGAWIN
RESET
PSEN
ALE
EA
B Register
XTAL 1
Control
RAM ADDR
Register
Unit
ACC
XTAL 2
TMP2
PSW
MPC89X54A Block Diagram
Port1 Driver
P1.0 ~ P1.7
ALU
Port1 Latch
MPC89x54A Data Sheet
RAM 256
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
Timer 0/1
Port0 Driver
Timer 2
Port0 Latch
UART
Flash ROM
Generator
Address
Program
Counter
ISP
ERAM
DPTR
7