PIC16F636-I/P Microchip Technology, PIC16F636-I/P Datasheet - Page 108
![IC MCU FLASH 2KX14 14DIP](/photos/6/59/65935/150-14-dip_sml.jpg)
PIC16F636-I/P
Manufacturer Part Number
PIC16F636-I/P
Description
IC MCU FLASH 2KX14 14DIP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC12F635-ISN.pdf
(234 pages)
3.PIC16F636-ISL.pdf
(8 pages)
4.PIC16F636-ISL.pdf
(4 pages)
5.PIC16F636-IST.pdf
(196 pages)
Specifications of PIC16F636-I/P
Program Memory Type
FLASH
Program Memory Size
3.5KB (2K x 14)
Package / Case
14-DIP (0.300", 7.62mm)
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, LVD, POR, WDT
Number Of I /o
11
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
RS- 232/SPI/USB
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC164039 - MODULE SKT PROMATE II 20DIP/SOICAC162057 - MPLAB ICD 2 HEADER 14DIPACICE0207 - MPLABICE 14P 300 MIL ADAPTER
Eeprom Size
-
Data Converters
-
Connectivity
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC12F635-ISN PDF datasheet #2
- PIC16F636-ISL PDF datasheet #3
- PIC16F636-ISL PDF datasheet #4
- PIC16F636-IST PDF datasheet #5
- Current page: 108 of 234
- Download datasheet (4Mb)
PIC12F635/PIC16F636/639
TABLE 11-2:
11.17 Input Channels (Enable/Disable)
Each channel can be individually enabled or disabled
by programming bits in Configuration Register 0<3:1>
(Register 11-1).
The purpose of having an option to disable a particular
channel is to minimize current draw by powering down
as much circuitry as possible, if the channel is not
needed for operation. The exact circuits disabled when
an input is disabled are amplifiers, detector, full-wave
rectifier, data slicer, and modulation FET. However, the
RF input limiter remains active to protect the silicon
from excessive antenna input voltages.
11.18 AGC Amplifier
The circuit automatically amplifies input signal voltage
levels to an acceptable level for the data slicer. Fast
attack and slow release by nature, the AGC tracks the
carrier signal level and not the modulated data bits.
The AGC inherently tracks the strongest of the three
antenna input signals. The AGC requires an AGC
stabilization time (T
The AGC will attempt to regulate a channel’s peak
signal voltage into the data slicer to a desired regulated
AGC voltage – reducing the input path’s gain as the
signal level attempts to increase above regulated AGC
voltage, and allowing full amplification on signal levels
below the regulated AGC voltage.
The AGC has two modes of operation:
1.
2.
Also, the AGC is frozen when the input signal envelope
is low. The AGC tracks only high envelope levels.
DS41232D-page 106
(Config. Register 5)
During the AGC settling time (T
time constant is fast, allowing a reasonably short
acquisition time of the continuous input signal.
After T
constant for data slicing.
AGCSIG<7>
0
1
AGC
, the AGC switches to a slower time
INPUT SENSITIVITY VS. MODULATED SIGNAL STRENGTH SETTING (AGCSIG <7>)
AGC
).
Disabled – the AFE passes signal of any amplitude level it is capable of
detecting (demodulated data and carrier clock).
Enabled – No output until AGC Status = 1 (i.e., V
(demodulated data and carrier clock).
• Provides the best signal to noise ratio.
AGC
), the AGC
Description
11.19 AGC Preserve
The AGC preserve feature allows the AFE to preserve
the AGC value during the AGC settling time (T
apply the value to the data slicing circuit for the following
data streams instead of using a new tracking value. This
feature is useful to demodulate the input signal correctly
when the input has random amplitude variations at a
given time period. This feature is enabled when the AFE
receives an AGC Preserve On command and disabled
if it receives an AGC Preserve Off command. Once the
AGC Preserve On command is received, the AFE
acquires a new AGC value during each AGC settling
time and preserves the value until a Soft Reset or an
AGC Preserve Off command is issued. Therefore, it
does not need to issue another AGC Preserve On
command. An AGC Preserve Off command is needed to
disable
Section 11.32.2.5 “AGC Preserve On Command”
and
Command” for AGC Preserve commands).
Section 11.32.2.6
PEAK
the
20 mV
AGC
PP
© 2007 Microchip Technology Inc.
)
preserve
“AGC
Preserve
feature
Sensitivity
3.0 mV
(Typical)
20 mV
Input
AGC
PP
PP
) and
(see
Off
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