W742C813 Datasheet, PDF(1/56 Page) Winbond

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W742C813 Datasheet, PDF (1/56 Pages) Winbond – 4 BIT MICROCONTROLLER

W742E/C813

Table of Contents-

4-BIT MICROCONTROLLER

1. GENERAL DESCRIPTION ......................................................................................................................3

2. FEATURES .............................................................................................................................................3

3. PIN CONFIGURATION............................................................................................................................5

4. PIN DESCRIPTION .................................................................................................................................6

5. FUNCTIONAL DESCRIPTION ................................................................................................................8

5.1

Program Counter (PC)..............................................................................................................8

5.2

Stack Register (STACK)...........................................................................................................8

5.3

Program Memory (ROM) ..........................................................................................................9

5.3.1 ROM Page Register (ROMPR) .........................................................................................10

5.3.2 ROM Addressing Mode ....................................................................................................10

5.4

Data Memory (RAM)...............................................................................................................12

5.4.1

5.4.2

5.4.3

5.4.4

5.4.5

Architecture ......................................................................................................................12

RAM Page Register (PAGE).............................................................................................12

WR Page Register (WRP)................................................................................................13

Data Bank Register (DBKRH, DBKRL).............................................................................14

RAM Addressing Mode.....................................................................................................15

5.5

Accumulator (ACC).................................................................................................................16

5.6

Arithmetic and Logic Unit (ALU) .............................................................................................16

5.7

Main Oscillator........................................................................................................................16

5.8

Sub-oscillator..........................................................................................................................17

5.9

Dividers...................................................................................................................................17

5.10 Dual-clock Operation ..............................................................................................................17

5.11 Watchdog Timer (WDT) .........................................................................................................18

5.12 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) ..................................................................................................22

Mode Register 1 (MR1) ..................................................................................................22

5.13 Interrupts ................................................................................................................................22

5.14 Stop Mode Operation .............................................................................................................24

5.14.1 Stop Mode Wake-up Enable Flag for RC and RD Port (SEF) ........................................24

5.15 Hold Mode Operation .............................................................................................................24

5.15.1 Hold Mode Release Enable Flag (HEF, HEFD)..............................................................26

Publication Release Date: December 2000

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Revision A1

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