MPC89x51A
8-bit micro-controller
Features.................................................................................................................................. 2
General Description ............................................................................................................... 3
Order Information:................................................................................................................. 3
Pin Description....................................................................................................................... 4
Pin Definition................................................................................................................. 4
Pin Configuration........................................................................................................... 6
Block Diagram....................................................................................................................... 7
Special Function Register ...................................................................................................... 8
Memory.................................................................................................................................. 9
Organization................................................................................................................... 9
Nonvolatile Registers:.................................................................................................. 10
RAM ............................................................................................................................ 11
Embedded Flash........................................................................................................... 12
Functional Description......................................................................................................... 13
TIMERS/COUNTERS................................................................................................. 13
TIMER0 (T0) AND TIMER1 (T1)...................................................................... 15
TIMER2 ............................................................................................................... 16
Interrupt........................................................................................................................ 20
Watchdog Timer........................................................................................................... 22
Serial IO Port (UART)................................................................................................. 23
Reset............................................................................................................................. 26
Power Saving Mode and POF...................................................................................... 26
In System Programming (ISP)..................................................................................... 27
In-Application Program ............................................................................................... 31
Note for Other SFR...................................................................................................... 32
Absolute Maximum Rating (MPC89E51A) ........................................................................ 33
DC Characteristics (MPC89E51A)...................................................................................... 33
Absolute Maximum Rating (MPC89L51A) ........................................................................ 34
DC Characteristics (MPC89L51A)...................................................................................... 34
Package Dimension.............................................................................................................. 35
Revision History .................................................................................................................. 38
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 A11
MEGAWIN
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