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PDF 68HC805K3 Data sheet ( Hoja de datos )
| Número de pieza | 68HC805K3 | |
| Descripción | General Release Specification | |
| Fabricantes | Freescale Semiconductor | |
| Logotipo |  |
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Freescale Semiconductor, Inc.
HC805K3GRS/D
www.DataSheet4U.com
REV. 1.0
68HC805K3
General Release Specification
April 19, 1996
CSIC System Design Group
Austin, Texas
For More Information On This Product,
Go to: www.freescale.com
1 page  
Freescale Semiconductor, Inc.
www.DataSheet4U.com
General Release Specification — MC68HC805K3
Table of Contents
Section 1. General Description
1.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
1.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
1.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
1.4 Mask Option Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
1.5 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.6 MCU Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
1.7 Functional Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
1.7.1
1.7.2
VDD and VSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
OSC1 and OSC2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
1.7.2.1 2-Pin Crystal Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . .21
1.7.2.2 2-Pin Ceramic Resonator Oscillator. . . . . . . . . . . . . . . . .22
1.7.2.3 2-Pin RC Oscillators. . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
1.7.2.4 3-Pin RC Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
1.7.2.5 External Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
1.7.3 Reset (RESET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
1.7.4 Maskable Interrupt Request (IRQ) . . . . . . . . . . . . . . . . . . .24
1.7.5 PA0 through PA7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
1.7.6 PB0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
1.7.7 PB1/OSC3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Section 2. Memory Map
2.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
2.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
2.3 I/O and Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
2.4 Random-Access Memory (RAM) . . . . . . . . . . . . . . . . . . . . . . .32
MC68HC805K3 — Rev. 1.0
For More Information On This Product,
Go to: www.freescale.com
5
5 Page 
Freescale Semiconductor, Inc.
www.DataSheet4U.com
General Release Specification — MC68HC805K3
List of Figures
Figure
Title
Page
1-1 MC68HC805K3 Pin Assignments ........................................18
1-2 MC68HC805K3 Block Diagram ............................................19
1-3 Oscillator Connections .........................................................21
2-1 MC68HC805K3 Single-Chip Mode Memory Map.................28
2-2 MC68HC805K3 I/O Registers Memory Map ........................29
2-3 MC68HC805K3 I/O Registers $0000–$000F .......................30
2-4 MC68HC805K3 I/O Registers $0010–$001F .......................31
2-5 Mask Option Register...........................................................32
3-1 M68HC05 Programming Model ............................................36
4-1 Interrupt Processing Flowchart.............................................41
4-2 Interrupt Stacking Order .......................................................42
4-3 IRQ Function Block Diagram................................................43
4-4 IRQ Status/Control Register.................................................45
5-1 Reset Block Diagram............................................................50
6-1 Stop/Halt/Wait Flowcharts ....................................................55
7-1 Port A I/O Circuitry ...............................................................60
7-2 Port A Pulldown Inhibit Register (PDRA) .............................62
7-3 Port B I/O Circuitry ...............................................................64
7-4 Port B Pulldown Inhibit Register (PDRB) .............................65
8-1 Timer Block Diagram............................................................72
8-2 Timer Counter Register ........................................................73
8-3 Timer Status/Control Register ..............................................74
8-4 COPR Watchdog Timer Location .........................................76
MC68HC805K3 — Rev. 1.0
For More Information On This Product,
Go to: www.freescale.com
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet 68HC805K3.PDF ] | |
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