PIC16F636T-I Datasheet, PDF (229/234 Pages) Microchip Technology – 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC12F635/PIC16F636/639
INDEX
A
Absolute Maximum Ratings .............................................. 163
AC Characteristics
Analog Front-End (AFE) for PIC16F639 ................... 187
Industrial and Extended ............................................ 179
Load Conditions ........................................................ 178
AGC Settling ....................................................................... 99
Analog Front-End
Configuration Registers
Summary Table ................................................ 123
Analog Front-End (AFE) ..................................................... 97
A/D Data Conversion of RSSI Signal........................ 118
AFE Status Register Bit Condition ............................ 127
AGC .............................................................. 98, 99, 106
AGC Preserve........................................................... 106
Battery Back-up and Batteryless Operation.............. 110
Block Diagrams
Bidirectional PKE System Application Example 102
Functional ......................................................... 100
LC Input Path .................................................... 101
Output Enable Filter Timing .............................. 103
Output Enable Filter Timing (Detailed) ............. 104
Carrier Clock Detector ................................................ 98
Carrier Clock Output ................................................. 114
Examples .......................................................... 115
Command Decoder/Controller .................................. 121
Configuration Registers ............................................ 122
Data Slicer .................................................................. 98
Demodulator ....................................................... 98, 111
De-Q’ing of Antenna Circuit ...................................... 110
Error Detection.......................................................... 109
Factory Calibration.................................................... 110
Fixed Gain Amplifiers.................................................. 98
Input Sensitivity Control ............................................ 105
LF Field Powering/Battery Back-up
Examples .......................................................... 110
LFDATA Output Selection......................................... 111
Case I ............................................................... 112
Case II .............................................................. 112
Low Current Modes
Operating .......................................................... 109
Sleep................................................................. 109
Standby............................................................. 109
Modulation Circuit ....................................................... 97
Modulation Depth...................................................... 107
Examples .......................................................... 108
Output Enable Filter .................................................... 98
Configurable Smart ........................................... 103
Output Enable Filter Timing (Table).......................... 105
Power-on Reset ........................................................ 111
RF Limiter ................................................................... 97
RSSI.................................................................... 98, 116
Output Path Diagram ........................................ 116
Power-up Sequence Diagram........................... 118
SPI Read Sequence Diagram........................... 120
SPI Write Sequence Diagram ........................... 119
RSSI Output Current vs. Input Signal Level
Example ............................................................ 117
Sensitivity Control ....................................................... 97
Soft Reset ................................................................. 107
SPI Interface Timing Diagram................................... 122
Timers ................................................................... 98, 99
Alarm .................................................................. 99
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Auto Channel Selection ...................................... 98
Inactivity ............................................................. 99
Period ................................................................. 99
Preamble Counters............................................. 99
Pulse Width ........................................................ 99
RC Oscillator ...................................................... 98
Tuning Capacitor ........................................................ 97
Variable Attenuator..................................................... 97
Analog Input Connection Considerations ........................... 73
Assembler
MPASM Assembler .................................................. 160
B
Block Diagrams
Analog Input Model..................................................... 73
Clock Source .............................................................. 35
Comparator................................................................. 71
Comparator C1 ........................................................... 72
Comparator C2 ........................................................... 72
Comparator Modes..................................................... 75
Crystal Operation........................................................ 38
External RC Mode ...................................................... 39
Fail-Safe Clock Monitor (FSCM)................................. 45
Functional (AFE)....................................................... 100
In-Circuit Serial Programming Connection ............... 147
Interrupt Logic........................................................... 140
On-Chip Reset Circuit............................................... 131
PIC12F635 Device ....................................................... 9
PIC16F636 Device ..................................................... 10
PIC16F639 Device ..................................................... 11
RA0 Pin ...................................................................... 52
RA1 Pin ...................................................................... 53
RA2 Pin ...................................................................... 53
RA3 Pin ...................................................................... 54
RA4 Pin ...................................................................... 55
RA5 Pin ...................................................................... 55
RC0 and RC1 Pins ..................................................... 58
RC2, RC3 and RC5 Pins ............................................ 58
RC4 Pin ...................................................................... 59
Recommended MCLR Circuit................................... 133
Resonator Operation .................................................. 38
Timer1 ........................................................................ 65
TMR0/WDT Prescaler ................................................ 61
Watchdog Timer (WDT)............................................ 143
Brown-out Reset (BOR).................................................... 134
Associated ................................................................ 135
Specifications ........................................................... 183
Timing and Characteristics ................................. 87, 182
C
C Compilers
MPLAB C18.............................................................. 160
MPLAB C30.............................................................. 160
Clock Sources
External Modes........................................................... 37
EC ...................................................................... 37
HS ...................................................................... 38
LP ....................................................................... 38
OST .................................................................... 37
RC ...................................................................... 39
XT ....................................................................... 38
Internal Modes............................................................ 39
Frequency Selection........................................... 41
HFINTOSC ......................................................... 39
DS41232D-page 227