PIC12F635 Просмотр технического описания (PDF) - Unspecified
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PIC12F635 Datasheet PDF : 196 Pages
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PIC12F635/PIC16F636/639
INDEX
A
Absolute Maximum Ratings .............................................. 147
AC Characteristics
Analog Front-End (AFE) for PIC16F639 ................... 168
Industrial and Extended ............................................ 162
Load Conditions ........................................................ 161
AGC Settling ....................................................................... 81
Analog Front-End
Configuration Registers
Summary Table ................................................ 105
Analog Front-End (AFE) ..................................................... 79
A/D Data Conversion of RSSI Signal........................ 100
AFE Status Register Bit Condition ............................ 110
AGC ................................................................ 80, 81, 88
AGC Preserve............................................................. 88
Battery Back-up and Batteryless Operation................ 92
Block Diagrams
Bidirectional PKE System Application
Example...................................................... 84
Functional ........................................................... 82
LC Input Path ...................................................... 83
Output Enable Filter Timing ................................ 85
Output Enable Filter Timing (Detailed) ............... 86
Carrier Clock Detector ................................................ 80
Carrier Clock Output ................................................... 96
Examples ............................................................ 97
Command Decoder/Controller .................................. 103
Configuration Registers ............................................ 104
Data Slicer .................................................................. 80
Demodulator ......................................................... 80, 93
De-Q’ing of Antenna Circuit ........................................ 92
Error Detection............................................................ 91
Factory Calibration...................................................... 92
Fixed Gain Amplifiers.................................................. 80
Input Sensitivity Control .............................................. 87
LF Field Powering/Battery Back-up
Examples ............................................................ 92
LFDATA Output Selection........................................... 93
Case I ................................................................. 94
Case II ................................................................ 94
Low Current Modes
Operating ............................................................ 91
Sleep................................................................... 91
Standby............................................................... 91
Modulation Circuit ....................................................... 79
Modulation Depth........................................................ 89
Examples ............................................................ 90
Output Enable Filter .................................................... 80
Configurable Smart ............................................. 85
Output Enable Filter Timing (Table)............................ 87
Power-on Reset .......................................................... 93
RF Limiter ................................................................... 79
RSSI...................................................................... 80, 98
Output Path Diagram .......................................... 98
Power-up Sequence Diagram........................... 100
SPI Read Sequence Diagram........................... 102
SPI Write Sequence Diagram ........................... 101
RSSI Output Current vs. Input Signal Level
Example .............................................................. 99
Sensitivity Control ....................................................... 79
Soft Reset ................................................................... 89
SPI Interface Timing Diagram................................... 104
Timers ................................................................... 80, 81
Alarm .................................................................. 81
Auto Channel Selection ...................................... 80
Inactivity ............................................................. 81
Period ................................................................. 81
Preamble Counters............................................. 81
Pulse Width ........................................................ 81
RC Oscillator ...................................................... 80
Tuning Capacitor ........................................................ 79
Variable Attenuator..................................................... 79
Analog Input Connection Considerations ........................... 62
Assembler
MPASM Assembler .................................................. 141
B
Block Diagrams
Analog Input Model..................................................... 62
Ceramic Resonator Operation.................................... 31
Clock Source .............................................................. 29
Comparator C1 Output ............................................... 65
Comparator C2 Output ............................................... 66
Comparator I/O Operating Modes for PIC12F635 ...... 63
Comparator I/O Operating Modes for
PIC16F636/639 .................................................. 64
Comparator Voltage Reference (CVREF).................... 68
External Clock Mode .................................................. 31
Fail-Safe Clock Monitor (FSCM)................................. 36
Functional (AFE)......................................................... 82
In-Circuit Serial Programming Connection ............... 129
Interrupt Logic........................................................... 122
On-Chip Reset Circuit............................................... 113
PIC12F635 Device ....................................................... 5
PIC16F636 Device ....................................................... 6
PIC16F639 Device ....................................................... 7
Quartz Crystal Operation............................................ 31
RA0 Pin ...................................................................... 44
RA1 Pin ...................................................................... 45
RA2 Pin ...................................................................... 45
RA3 Pin ...................................................................... 46
RA4 Pin ...................................................................... 47
RA5 Pin ...................................................................... 47
RC Mode .................................................................... 32
RC0 and RC1 Pins ..................................................... 49
RC2, RC3 and RC5 Pins ............................................ 49
RC4 Pin ...................................................................... 50
RCIO Mode................................................................. 32
Recommended MCLR Circuit................................... 114
Timer1 ........................................................................ 57
TMR0/WDT Prescaler ................................................ 53
Watchdog Timer (WDT)............................................ 125
Brown-out Detect (BOD)................................................... 115
Associated Registers................................................ 116
Specifications ........................................................... 165
C
C Compilers
MPLAB C17.............................................................. 142
MPLAB C18.............................................................. 142
MPLAB C30.............................................................. 142
CLKOUT and I/O Timing Requirements ........................... 164
Clock Sources..................................................................... 29
Associated Registers.................................................. 38
External Clock Modes................................................. 30
Internal Clock Modes.................................................. 32
Modes......................................................................... 30
© 2005 Microchip Technology Inc.
Preliminary
DS41232B-page 189
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