MPC82x54A
8-bit micro-controller
Features.............................................................................................................................3
General Description ..........................................................................................................5
Order Information:............................................................................................................5
Pin Description..................................................................................................................6
Pin Definition...................................................................................................................6
Pin Configuration...........................................................................................................10
Block Diagram................................................................................................................11
Special Function Register ...............................................................................................12
Address Map ..................................................................................................................12
Bits Description..............................................................................................................13
Memory...........................................................................................................................15
Organization...................................................................................................................15
RAM...............................................................................................................................16
Nonvolatile Registers:....................................................................................................16
Embedded Flash.............................................................................................................19
Functional Description....................................................................................................20
I/O Port Configuration ...................................................................................................20
Timer/Counter ................................................................................................................24
Interrupt..........................................................................................................................29
Watch Dog Timer ...........................................................................................................33
Universal Asynchronous Serial Port (UART) ................................................................35
Programmable Counter Array (PCA).............................................................................38
Serial Peripheral Interface (SPI) ....................................................................................47
Analog to Digital Converter...........................................................................................54
Built-In Oscillator ..........................................................................................................56
Power-Up and Low Voltage Detector and Reset............................................................56
Power Management........................................................................................................57
Reset and Boot Entrance ................................................................................................59
In System Programming and In Application Programming............................................60
In System Programming (ISP) .......................................................................................60
In-Application Program (IAP) .......................................................................................63
Avoid Inadvertent Data Lost from IAP/ISP ...................................................................64
This document contains information on a new product under development by Megawin. Megawin reserves the right to change or
discontinue this product without notice.
© Megawin Technology Co., Ltd. 2008 All rights reserved.
2008/12 version A8
MEGAWIN