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W742C814 Datasheet

  • W742C814

  • 4 BIT MICROCONTROLLER

  • 699.29KB

  • 46頁

  • WINBOND

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W742C814
4-BIT MICROCONTROLLER
Table of Contents-
1.
2.
3.
4.
5.
6.
GENERAL DESCRIPTION .............................................................................................................3
FEATURES .....................................................................................................................................3
PIN CONFIGURATION ...................................................................................................................4
PIN DESCRIPTION.........................................................................................................................5
BLOCK DIAGRAM ..........................................................................................................................6
FUNCTIONAL DESCRIPTION .......................................................................................................7
6.1
6.2
6.3
6.4
Program Counter (PC)......................................................................................................7
Stack Register (STACK) ...................................................................................................7
Program Memory (ROM) ..................................................................................................7
6.3.1
6.4.1
6.4.2
6.4.3
6.4.4
ROM Page Register (ROMPR) .................................................................................. 8
Architecture ................................................................................................................ 9
Page Register (PAGE) ............................................................................................... 9
WR Page Register (WRP)........................................................................................ 10
Data Bank Register (DBKR)..................................................................................... 10
Data Memory (RAM).........................................................................................................9
6.5
6.6
6.7
6.8
6.9
6.10
6.11
Accumulator (ACC).........................................................................................................11
Arithmetic and Logic Unit (ALU) .....................................................................................11
Oscillator .........................................................................................................................11
Dividers ...........................................................................................................................12
Dual-clock Operation ......................................................................................................12
WatchDog Timer (WDT) and WatchDog Timer Register (WDTR) .................................13
Timer/Counter .................................................................................................................15
6.11.1
6.11.2
6.11.3
6.11.4
Timer 0 (TM0) ........................................................................................................ 15
Timer 1 (TM1) ........................................................................................................ 16
Mode Register 0 (MR0).......................................................................................... 18
Mode Register 1 (MR1) & MFP Control Pin (BUZCR) ........................................... 18
6.12
6.13
6.14
Interrupts.........................................................................................................................19
Stop Mode Operation......................................................................................................20
6.13.1
6.14.1
6.14.2
Stop Mode Wake-up Enable Flag for RC Port (SEF) ............................................. 20
Hold Mode Release Enable Flag (HEF) ................................................................. 22
Interrupt Enable Flag (IEF)..................................................................................... 22
Hold Mode Operation......................................................................................................21
-1-
Publication Release Date: February 12, 2003
Revision A2

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