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MC68HC705SJ7CDW Datasheet(PDF) 8 Page - Freescale Semiconductor, Inc

Part # MC68HC705SJ7CDW
Description  General Release Specification
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

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Table of Contents
General Release Specification
MC68HC705JJ7/MC68HC705JP7 Rev. 3.0
Table of Contents
Section 7. Parallel Input/Output
7.1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
7.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
7.3
Port A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
7.3.1
Port A Data Register (PORTA) . . . . . . . . . . . . . . . . . . . . . .79
7.3.2
Data Direction Register A (DDRA) . . . . . . . . . . . . . . . . . . .80
7.3.3
Pulldown Register A (PDRA). . . . . . . . . . . . . . . . . . . . . . . .81
7.3.4
Port A External Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . .82
7.3.5
Port A Logic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
7.4
Port B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
7.4.1
Port B Data Register (PORTB) . . . . . . . . . . . . . . . . . . . . . .84
7.4.2
Data Direction Register B (DDRB) . . . . . . . . . . . . . . . . . . .85
7.4.3
Pulldown Register B (PDRB). . . . . . . . . . . . . . . . . . . . . . . .86
7.4.4
Port B Logic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
7.4.5
PB0, PBI, PB2 and PB3 Logic. . . . . . . . . . . . . . . . . . . . . . .87
7.4.6
PB4/AN4/TCMP/CMP1 Logic . . . . . . . . . . . . . . . . . . . . . . .89
7.4.7
PB5/SDO Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
7.4.8
PB6/SDI Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
7.4.9
PB7/SCK Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
7.5
Port C (28-Pin Versions Only) . . . . . . . . . . . . . . . . . . . . . . . . .99
7.5.1
Port C Data Register (PORTC) . . . . . . . . . . . . . . . . . . . . . .99
7.5.2
Data Direction Register C (DDRC) . . . . . . . . . . . . . . . . . .100
7.5.3
Port C Pulldown Devices. . . . . . . . . . . . . . . . . . . . . . . . . .100
7.5.4
Port C Logic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
7.6
Port Transitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Section 8. Analog Subsystem
8.1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
8.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
8.3
Analog Multiplex Register . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
8.4
Analog Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
8.5
Analog Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
8.6
A/D Conversion Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
8.7
Voltage Measurement Methods . . . . . . . . . . . . . . . . . . . . . . .128
8.7.1
Absolute Voltage Readings . . . . . . . . . . . . . . . . . . . . . . . .129
8.7.1.1
Internal Absolute Reference. . . . . . . . . . . . . . . . . . . . . .129
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


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