PIC12F635T-I/SN Microchip Technology, PIC12F635T-I/SN Datasheet - Page 113
PIC12F635T-I/SN
Manufacturer Part Number
PIC12F635T-I/SN
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SOP,8PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 12Fr
Specifications of PIC12F635T-I/SN
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
5
Program Memory Size
1.75KB (1K x 14)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
64 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC162057 - MPLAB ICD 2 HEADER 14DIP
Data Converters
-
Connectivity
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC12F635T-I/SN
Manufacturer:
MAXIM
Quantity:
101
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11.29 Demodulator
The demodulator recovers the modulation data from
the received signal, containing carrier plus data, by
appropriate envelope detection. The demodulator has
a fast rise (charge) time (T
appropriate to an envelope of input signal (see
Section 15.0 “Electrical Specifications” for T
and T
the full-wave rectifier, low-pass filter, peak detector
and data slicer.
FIGURE 11-9:
11.30 Power-On Reset
This circuit remains in a Reset state until a sufficient
supply voltage is applied to the AFE. The Reset
releases when the supply is sufficient for correct AFE
operation, nominally
The Configuration registers are all cleared on a
Power-on Reset. As the Configuration registers are
protected by odd row and column parity, the ALERT pin
will be pulled down – indicating to the microcontroller
section that the AFE configuration memory is cleared
and requires loading.
11.31 LFDATA Output Selection
The LFDATA output can be configured to pass the
Demodulator output, Received Signal Strength Indicator
(RSSI) output, or Carrier Clock. See Configuration
Register 1 (Register 11-2) for more details.
11.31.1
The demodulator output is the default configuration of
the output selection. This is the output of an envelope
detection circuit. See Figure 11-9 for the demodulator
output.
© 2007 Microchip Technology Inc.
DF
Full-wave Rectifier output
specifications). The demodulator contains
DEMODULATOR OUTPUT
Signal into LC input pins
(demodulator output)
Data Slicer output
V
POR
DEMODULATOR CHARGE AND DISCHARGE
of AFE.
DR
) and a fall time (T
T
PIC12F635/PIC16F636/639
DR
DF
DR
)
For a clean data output or to save operating power, the
input channels can be individually enabled or disabled. If
more than one channel is enabled, the output is the sum
of each output of all enabled channels. There will be no
valid output if all three channels are disabled. When the
demodulated output is selected, the output is available in
two different conditions depending on how the options of
Configuration Register 0 (Register 11-1) are set: Output
Enable Filter is disabled or enabled.
Related Configuration register bits:
• Configuration Register 1 (Register 11-2),
• Configuration Register 0 (Register 11-1): all bits
DATOUT <8:7>:
- bit 8 bit 7
T
DF
0
0
1
0
0: Demodulator Output
1: Carrier Clock Output
0: RSSI Output
1: RSSI Output
DS41232D-page 111
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