12F683 datasheet(141/148 Pages) MICROCHIP

141 / 148 page

 2004 Microchip Technology Inc.

Preliminary

DS41211B-page 139

PIC12F683

INDEX

A/D ...................................................................................... 55

Acquisition Requirements ........................................... 61

Associated Registers .................................................. 63

Calculating Acquisition Time....................................... 61

Channel Selection ....................................................... 55

Configuration and Operation....................................... 55

Configuring.................................................................. 60

Configuring Interrupt ................................................... 60

Conversion Clock........................................................ 55

Conversion Output ...................................................... 57

Conversion Requirements ........................................ 128

Conversion Requirements (Sleep Mode).................. 129

Converter Characteristics ......................................... 127

Effects of a Reset........................................................ 63

Internal Sampling Switch (RSS) Impedance................ 61

Operation During Sleep .............................................. 62

Reference Voltage (VREF)........................................... 55

Source Impedance...................................................... 61

Starting a Conversion ................................................. 57

Absolute Maximum Ratings .............................................. 109

AC Characteristics

Industrial and Extended ............................................ 119

Analog Input Connection Considerations............................ 48

Analog-to-Digital Converter. See A/D.

Assembler

MPASM Assembler................................................... 103

Block Diagrams

A/D .............................................................................. 55

Analog Input Model ............................................... 48, 61

Capture Mode Operation ............................................ 70

Ceramic Resonator Operation .................................... 21

Comparator Output ..................................................... 50

Comparator Voltage Reference (CVREF) .................... 52

Compare ..................................................................... 71

Fail-Safe Clock Monitor (FSCM) ................................. 27

GP0 Pin....................................................................... 34

GP1 Pin....................................................................... 35

GP2 Pin....................................................................... 35

GP3 Pin....................................................................... 36

GP4 Pin....................................................................... 36

GP5 Pin....................................................................... 37

In-Circuit Serial Programming Connection.................. 93

Interrupt Logic ............................................................. 86

On-Chip Reset Circuit ................................................. 78

PIC12F683.................................................................... 5

PIC12F683 Clock Source ........................................... 19

Recommended MCLR Circuit ..................................... 79

Simplified PWM Mode................................................. 72

Timer1......................................................................... 41

Timer2......................................................................... 46

TMR0/WDT Prescaler................................................. 39

Watchdog Timer (WDT) .............................................. 89

Brown-out Detect (BOD) ..................................................... 80

Associated Registers .................................................. 81

Calibration................................................................... 80

C Compilers

MPLAB C17 .............................................................. 104

MPLAB C18 .............................................................. 104

MPLAB C30 .............................................................. 104

Calibration Bits.................................................................... 77

Capture Module. See Capture/Compare/PWM (CCP)

Capture/Compare/PWM (CCP) .......................................... 69

Associated Registers.................................................. 74

Associated Registers with Capture,

Compare and Timer1.......................................... 71

Capture Mode ............................................................. 70

Prescaler ............................................................ 70

CCP1 Pin Configuration ............................................. 70

Compare

Special Trigger Output of CCP1 ......................... 71

Compare Mode ........................................................... 71

CCP1 Pin Configuration ..................................... 71

Software Interrupt Mode ..................................... 71

Special Event Trigger ......................................... 71

Timer1 Mode Selection....................................... 71

PWM Mode ................................................................. 72

Duty Cycle .......................................................... 73

Example Frequencies/Resolutions ..................... 73

PWM Period ....................................................... 72

Setup .................................................................. 73

TMR2 to PR2 Match ........................................... 45

Special Event Trigger and A/D Conversions .............. 71

Timer Resources ........................................................ 69

Capture/Compare/PWM (CCP) Requirements ................. 125

CCP. See Capture/Compare/PWM (CCP).

CLKOUT and I/O Timing Requirements ........................... 121

Clock Sources..................................................................... 19

Associated Registers.................................................. 29

Code Examples

A/D Conversion .......................................................... 60

Changing Between Capture Prescalers ..................... 70

Changing Prescaler from Timer0 to WDT .................. 40

Changing Prescaler from WDT to Timer0 .................. 40

Data EEPROM Read.................................................. 67

Data EEPROM Write .................................................. 67

Indirect Addressing ..................................................... 17

Initializing GPIO.......................................................... 31

Saving Status and W Registers in RAM ..................... 88

Ultra Low-Power Wake-up Initialization ...................... 34

Write Verify ................................................................. 67

Code Protection .................................................................. 92

Comparator......................................................................... 47

Associated Registers.................................................. 54

Configurations ............................................................ 49

COUT as T1 Gate................................................. 42, 51

Effects of a Reset ....................................................... 53

I/O Operating Modes .................................................. 49

Interrupts .................................................................... 51

Operation .................................................................... 48

Operation During Sleep .............................................. 53

Outputs ....................................................................... 51

Response Time .......................................................... 53

Specifications ........................................................... 126

Synchronizing COUT w/Timer1 .................................. 51

Comparator Voltage Reference (CVREF)............................ 52

Accuracy/Error............................................................ 52

Associated Registers.................................................. 54

Configuring ................................................................. 52

Effects of a Reset ....................................................... 53

Response Time .......................................................... 53

Specifications ........................................................... 126

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