Datasheet

 2011-2012 Microchip Technology Inc. DS41441C-page 399
PIC12(L)F1840
INDEX
A
Absolute Maximum Ratings .............................................. 313
AC Characteristics
Industrial and Extended ............................................ 328
Load Conditions ........................................................ 327
ACKSTAT ......................................................................... 237
ACKSTAT Status Flag ...................................................... 237
ADC .................................................................................. 119
Acquisition Requirements ......................................... 129
Associated registers.................................................. 131
Block Diagram...........................................................119
Calculating Acquisition Time..................................... 129
Channel Selection..................................................... 120
Configuration............................................................. 120
Configuring Interrupt ................................................. 124
Conversion Clock...................................................... 120
Conversion Procedure .............................................. 124
Internal Sampling Switch (R
SS) Impedance.............. 129
Interrupts................................................................... 122
Operation .................................................................. 123
Operation During Sleep ............................................ 123
Port Configuration ..................................................... 120
Reference Voltage (V
REF)......................................... 120
Source Impedance.................................................... 129
Special Event Trigger................................................ 123
Specifications.................................................... 334, 335
Starting an ADC Conversion..................................... 122
ADCON0 Register....................................................... 22, 125
ADCON1 Register....................................................... 22, 126
ADDFSR ........................................................................... 303
ADDWFC .......................................................................... 303
ADRESH Register............................................................... 22
ADRESH Register (ADFM = 0)......................................... 127
ADRESH Register (ADFM = 1)......................................... 128
ADRESL Register (ADFM = 0).......................................... 127
ADRESL Register (ADFM = 1).......................................... 128
Alternate Pin Function....................................................... 101
Analog-to-Digital Converter.
See ADC
ANSELA Register ............................................................. 106
APFCON0 Register........................................................... 102
Assembler
MPASM Assembler................................................... 384
B
BAUDCON Register.......................................................... 269
BF ............................................................................. 237, 239
BF Status Flag .......................................................... 237, 239
Block Diagram
Capacitive Sensing ........................................... 287, 288
Block Diagrams
(CCP) Capture Mode Operation ............................... 180
ADC .......................................................................... 119
ADC Transfer Function ............................................. 130
Analog Input Model ........................................... 130, 146
CCP PWM................................................................. 184
Clock Source............................................................... 40
Comparator ............................................................... 142
Compare ................................................................... 182
Crystal Operation.................................................. 42, 43
Digital-to-Analog Converter (DAC)............................ 134
EUSART Receive ..................................................... 258
EUSART Transmit .................................................... 257
External RC Mode....................................................... 44
Fail-Safe Clock Monitor (FSCM)................................. 52
Generic I/O Port........................................................ 101
Interrupt Logic............................................................. 69
On-Chip Reset Circuit................................................. 61
PIC12(L)F1840 ....................................................... 8, 11
PWM (Enhanced) ..................................................... 188
Resonator Operation .................................................. 42
Timer0 ...................................................................... 149
Timer1 ...................................................................... 153
Timer1 Gate.............................................. 158, 159, 160
Timer2 ...................................................................... 165
Voltage Reference.................................................... 113
Voltage Reference Output Buffer Example .............. 134
BORCON Register.............................................................. 63
BRA .................................................................................. 304
Break Character (12-bit) Transmit and Receive ............... 278
Brown-out Reset (BOR)...................................................... 63
Specifications ........................................................... 332
Timing and Characteristics ....................................... 331
C
C Compilers
MPLAB C18.............................................................. 384
CALL................................................................................. 305
CALLW ............................................................................. 305
Capacitive Sensing ........................................................... 287
Associated registers w/ Capacitive Sensing............. 294
Specifications ........................................................... 344
Capture Module.
See Enhanced Capture/Compare/
PWM (ECCP)
Capture/Compare/PWM ................................................... 179
Capture/Compare/PWM (CCP)
Associated Registers w/ Capture ............................. 181
Associated Registers w/ Compare ........................... 183
Associated Registers w/ PWM ......................... 187, 196
Capture Mode........................................................... 180
CCPx Pin Configuration............................................ 180
Compare Mode......................................................... 182
CCPx Pin Configuration.................................... 182
Software Interrupt Mode........................... 180, 182
Special Event Trigger ....................................... 182
Timer1 Mode Resource ............................ 180, 182
Prescaler .................................................................. 180
PWM Mode
Duty Cycle ........................................................ 185
Effects of Reset ................................................ 187
Example PWM Frequencies and
Resolutions, 20 MHZ................................ 186
Example PWM Frequencies and
Resolutions, 32 MHZ................................ 186
Example PWM Frequencies and
Resolutions, 8 MHz .................................. 186
Operation in Sleep Mode.................................. 187
Resolution ........................................................ 186
System Clock Frequency Changes .................. 187
PWM Operation........................................................ 184
PWM Overview......................................................... 184
PWM Period ............................................................. 185
PWM Setup .............................................................. 185
CCP1AS Register............................................................. 198
CCP1CON Register............................................................ 24
CCPR1H Register............................................................... 24
CCPR1L Register ............................................................... 24
CCPxCON (ECCPx) Register........................................... 197