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W742E816 Datasheet

  • W742E816

  • Microcontroller

  • 58頁

  • ETC

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W742E/C816
4-BIT MICROCONTROLLER
Table of Contents-
1.
2.
3.
4.
5.
GENERAL DESCRIPTION ......................................................................................................................3
FEATURES .............................................................................................................................................3
PIN CONFIGURATION............................................................................................................................5
PIN DESCRIPTION .................................................................................................................................6
FUNCTIONAL DESCRIPTION ................................................................................................................7
5.1
5.2
5.3
Program Counter (PC)..............................................................................................................7
Stack Register (STACK)...........................................................................................................8
Program Memory (ROM) ..........................................................................................................8
5.3.1
5.3.2
ROM Page Register (ROMPR) ...........................................................................................9
ROM Addressing Mode ....................................................................................................10
Architecture ......................................................................................................................11
RAM Page Register (PAGE).............................................................................................12
WR Page Register (WRP)................................................................................................12
Data Bank Register (DBKRH, DBKRL).............................................................................13
RAM Addressing Mode.....................................................................................................14
5.4
Data Memory (RAM)...............................................................................................................11
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.5
5.6
5.7
5.8
5.9
5.10
5.11
5.12
Accumulator (ACC).................................................................................................................15
Arithmetic and Logic Unit (ALU) .............................................................................................15
Main Oscillator........................................................................................................................16
Sub-oscillator..........................................................................................................................16
Dividers...................................................................................................................................16
Dual-clock Operation ..............................................................................................................17
Watchdog Timer (WDT) .........................................................................................................18
Timer/Counter.........................................................................................................................19
5.12.1
5.12.2
5.12.3
5.12.4
Timer 0 (TM0) .................................................................................................................19
Timer 1 (TM1) .................................................................................................................20
Mode Register 0 (MR0) ..................................................................................................21
Mode Register 1 (MR1) ..................................................................................................22
5.13
5.14
5.15
Interrupts ................................................................................................................................22
Stop Mode Operation .............................................................................................................24
5.14.1
5.15.1
5.15.2
5.15.3
5.15.4
5.15.5
Stop Mode Wake-up Enable Flag for RC and RD Port (SEF) ........................................24
Hold Mode Release Enable Flag (HEF, HEFD)..............................................................26
Interrupt Enable Flag (IEF) .............................................................................................26
Port Enable Flag (PEF, P1EF)........................................................................................27
Hold Mode Release Condition Flag (HCF, HCFD) .........................................................27
Event Flag (EVF, EVFD).................................................................................................28
Hold Mode Operation .............................................................................................................24
-1-
Publication Release Date: December 17, 2001
Revision A1

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