PIC16F631 Datasheet, PDF (286/294 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F631/677/685/687/689/690
Clock Accuracy with Asynchronous Operation ................. 158
Clock Sources
External Modes ........................................................... 49
EC ....................................................................... 49
HS ....................................................................... 50
LP........................................................................ 50
OST..................................................................... 49
RC....................................................................... 51
XT ....................................................................... 50
Internal Modes ............................................................ 51
Frequency Selection ........................................... 53
HFINTOSC.......................................................... 51
HFINTOSC/LFINTOSC Switch Timing ............... 53
INTOSC .............................................................. 51
INTOSCIO........................................................... 51
LFINTOSC .......................................................... 53
Clock Switching................................................................... 55
CM1CON0 Register ............................................................ 98
CM2CON0 Register ............................................................ 99
CM2CON1 Register .......................................................... 101
Code Examples
A/D Conversion ......................................................... 112
Assigning Prescaler to Timer0 .................................... 82
Assigning Prescaler to WDT ....................................... 82
Changing Between Capture Prescalers .................... 128
Indirect Addressing ..................................................... 44
Initializing PORTA ....................................................... 59
Initializing PORTB ....................................................... 69
Initializing PORTC....................................................... 76
Loading the SSPBUF (SSPSR) Register .................. 178
Saving STATUS and W Registers in RAM ............... 207
Ultra Low-Power Wake-up Initialization ...................... 63
Write Verify ............................................................... 125
Code Protection ................................................................ 211
Comparator
C2OUT as T1 Gate ................................................... 101
Operation .................................................................... 93
Operation During Sleep .............................................. 97
Response Time ........................................................... 95
Synchronizing COUT w/Timer1 ................................ 101
Comparator Module ............................................................ 93
Associated registers.................................................. 106
C1 Output State Versus Input Conditions ................... 95
Comparator Voltage Reference (CVREF)
Response Time ........................................................... 95
Comparator Voltage Reference (CVREF) .......................... 104
Effects of a Reset........................................................ 97
Specifications ............................................................ 245
Comparators
C2OUT as T1 Gate ..................................................... 85
Effects of a Reset........................................................ 97
Specifications ............................................................ 245
Compare Module. See Enhanced Capture/
Compare/PWM (ECCP)
CONFIG Register.............................................................. 195
Configuration Bits.............................................................. 194
CPU Features ................................................................... 193
Customer Change Notification Service ............................. 289
Customer Notification Service........................................... 289
Customer Support ............................................................. 289
D
D/A bit ............................................................................... 176
Data EEPROM Memory .................................................... 119
Associated Registers ................................................ 126
Code Protection ........................................................ 125
DS41262D-page 284
Reading .................................................................... 122
Writing ...................................................................... 122
Data Memory ...................................................................... 26
Data/Address bit (D/A)...................................................... 176
DC Characteristics
Extended .................................................................. 232
Extended and Industrial ............................................ 234
Industrial ................................................................... 230
Industrial and Extended ............................................ 229
Development Support ....................................................... 223
Device Overview................................................................... 9
E
ECCP. See Enhanced Capture/Compare/PWM
ECCPAS Register............................................................. 141
EEADR Register ............................................................... 120
EEADR Registers ............................................................. 119
EEADRH Registers........................................................... 119
EECON1 Register..................................................... 119, 121
EECON2 Register............................................................. 119
EEDAT Register ............................................................... 120
EEDATH Register............................................................. 120
EEPROM Data Memory
Avoiding Spurious Write ........................................... 125
Write Verify ............................................................... 125
Effects of Reset
PWM mode ............................................................... 132
Electrical Specifications .................................................... 227
Enhanced Capture/Compare/PWM .................................. 127
Enhanced Capture/Compare/PWM (ECCP)
Enhanced PWM Mode.............................................. 133
Auto-Restart ..................................................... 142
Auto-shutdown.................................................. 141
Direction Change in Full-Bridge Output Mode.. 139
Full-Bridge Application...................................... 137
Full-Bridge Mode .............................................. 137
Half-Bridge Application ..................................... 136
Half-Bridge Application Examples .................... 143
Half-Bridge Mode.............................................. 136
Output Relationships (Active-High and
Active-Low)............................................... 134
Output Relationships Diagram.......................... 135
Programmable Dead Band Delay..................... 143
Shoot-through Current ...................................... 143
Start-up Considerations .................................... 140
Specifications ........................................................... 244
Timer Resources ...................................................... 127
Enhanced Universal Synchronous Asynchronous
Receiver Transmitter (EUSART) .............................. 149
Errata .................................................................................... 8
EUSART ........................................................................... 149
Associated Registers
Baud Rate Generator ....................................... 161
Asynchronous Mode ................................................. 151
12-bit Break Transmit and Receive .................. 167
Associated Registers
Receive .................................................... 157
Transmit.................................................... 153
Auto-Wake-up on Break ................................... 166
Baud Rate Generator (BRG) ............................ 161
Clock Accuracy................................................. 158
Receiver ........................................................... 154
Setting up 9-bit Mode with Address Detect ...... 156
Transmitter ....................................................... 151
Baud Rate Generator (BRG)
Auto Baud Rate Detect..................................... 165
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