PIC16F688 Datasheet, PDF (170/174 Pages) Microchip Technology – 14-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F688
Timer0 Module .................................................................... 45
Timer1
Associated Registers .................................................. 52
Asynchronous Counter Mode ..................................... 52
Reading and Writing ........................................... 52
External Clock Requirements ................................... 150
Interrupt....................................................................... 50
Modes of Operations................................................... 50
Operation During Sleep .............................................. 52
Oscillator ..................................................................... 52
Prescaler ..................................................................... 50
Timer1 Gate
Inverting Gate ..................................................... 50
Selecting Source........................................... 50, 58
Synchronizing C2OUT w/ Timer1 ....................... 58
TMR1H Register ......................................................... 49
TMR1L Register .......................................................... 49
Timer1 Module with Gate Control ....................................... 49
Timing Diagrams
A/D Conversion ......................................................... 154
A/D Conversion (Sleep Mode) .................................. 155
Asynchronous Reception ............................................ 90
Asynchronous Transmission ....................................... 87
Asynchronous Transmission (Back to Back) .............. 87
Auto Wake-up Bit (WUE) During Sleep ...................... 91
Automatic Baud Rate Calculator ................................. 85
Auto-Wake-up Bit (WUE) During Normal Operation ... 91
Brown-out Detect (BOD) ........................................... 148
Brown-out Detect Situations ..................................... 104
CLKOUT and I/O....................................................... 147
Comparator Output ..................................................... 54
External Clock ........................................................... 145
Fail-Safe Clock Monitor (FSCM) ................................. 29
INT Pin Interrupt........................................................ 111
Reset, WDT, OST and Power-up Timer ................... 148
Send Break Character Sequence ............................... 92
Synchronous Reception (Master Mode, SREN) ......... 95
Synchronous Transmission......................................... 93
Synchronous Transmission (Through TXEN) ............. 94
Time-out Sequence................................................... 106
Case 3............................................................... 106
Timer0 and Timer1 External Clock ........................... 150
Timer1 Incrementing Edge.......................................... 50
Two Speed Start-up .................................................... 28
USART Synchronous Receive (Master/Slave) ......... 151
USART Synchronous Transmission (Master/Slave) . 151
Wake-up from Interrupt ............................................. 116
Timing Parameter Symbology........................................... 144
TMR1H Register ................................................................. 49
TMR1L Register .................................................................. 49
TRISA.................................................................................. 31
TRISA Register ................................................................... 32
TRISC Register ................................................................... 43
Two-Speed Clock Start-up Mode ........................................ 27
TXREG................................................................................ 86
TXSTA Register .................................................................. 78
BRGH Bit .................................................................... 81
U
Ultra Low-Power Wake-up........................................ 6, 31, 34
USART
Asynchronous Mode ................................................... 86
12-bit BreakTransmit and Receive ..................... 92
Associated Registers, Receive........................... 90
Associated Registers, Transmit .......................... 88
Auto Wake-up on SYNC Break .......................... 91
Receiver ............................................................. 89
Setting up 9-bit Mode with Address Detect ........ 89
Baud Rate Generator (BRG)
Auto Baud Rate Detect....................................... 84
Baud Rate Error, Calculating.............................. 81
Baud Rates, Asynchronous Modes .................... 82
Formulas............................................................. 81
High Baud Rate Select (BRGH Bit) .................... 81
Sampling............................................................. 81
Serial Port Enable (SPEN Bit) .................................... 77
Synchronous Master Mode......................................... 93
Associated Registers, Reception........................ 96
Associated Registers, Transmit .......................... 94
Reception ........................................................... 95
Requirements, Synchronous Receive .............. 151
Requirements, Synchronous Transmission...... 151
Timing Diagram, Synchronous Receive ........... 151
Timing Diagram, Synchronous Transmission... 151
Transmission ...................................................... 93
Synchronous Slave Mode........................................... 97
Associated Registers, Receive........................... 98
Associated Registers, Transmit .......................... 97
Reception ........................................................... 98
Transmission ...................................................... 97
V
Voltage Reference.
See Comparator Voltage Reference (CVREF)
VRCON Register ................................................................ 61
W
Wake-up Using Interrupts ................................................. 115
Watchdog Timer (WDT).................................................... 113
Associated Registers ................................................ 114
Clock Source ............................................................ 113
Modes ....................................................................... 113
Period ....................................................................... 113
Specifications ........................................................... 149
WDTCON Register ....................................................... 9, 114
WPUA Register................................................................... 32
WWW, On-Line Support ....................................................... 3
DS41203B-page 168
Preliminary
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