PIC16F872T-I/SO Microchip Technology, PIC16F872T-I/SO Datasheet - Page 91
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PIC16F872T-I/SO
Manufacturer Part Number
PIC16F872T-I/SO
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SOP,28PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16C770-ISO.pdf
(8 pages)
4.PIC16F872-ISO.pdf
(168 pages)
5.PIC16F872-ISO.pdf
(5 pages)
6.PIC16F872-ISO.pdf
(6 pages)
Specifications of PIC16F872T-I/SO
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16C770-ISO PDF datasheet #3
- PIC16F872-ISO PDF datasheet #4
- PIC16F872-ISO PDF datasheet #5
- PIC16F872-ISO PDF datasheet #6
- Current page: 91 of 168
- Download datasheet (3Mb)
11.2
11.2.1
The PIC16F872 can be operated in four different oscil-
lator modes. The user can program two configuration
bits (FOSC1 and FOSC0) to select one of these four
modes:
• LP
• XT
• HS
• RC
11.2.2
In XT, LP or HS modes, a crystal or ceramic resonator
is connected to the OSC1/CLKIN and OSC2/CLKOUT
pins
PIC16F872 oscillator design requires the use of a par-
allel cut crystal. Use of a series cut crystal may give a
frequency out of the crystal manufacturers specifica-
tions. When in XT, LP or HS modes, the device can
have an external clock source to drive the OSC1/
CLKIN pin (Figure 11-2).
FIGURE 11-1:
© 2006 Microchip Technology Inc.
Note 1: See Table 11-1 and Table 11-2 for recom-
to
C1
C2
Oscillator Configurations
(1)
(1)
establish
2: A series resistor (RS) may be required for
3: RF varies with the crystal chosen.
Low Power Crystal
Crystal/Resonator
High Speed Crystal/Resonator
Resistor/Capacitor
CRYSTAL OSCILLATOR/CERAMIC
RESONATORS
OSCILLATOR TYPES
XTAL
mended values of C1 and C2.
AT strip cut crystals.
RS
(2)
OSC1
OSC2
oscillation
CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS, XT OR LP
OSC CONFIGURATION)
RF
(3)
(Figure 11-1).
PIC16F87X
SLEEP
To
Internal
Logic
The
FIGURE 11-2:
TABLE 11-1:
All resonators used did not have built-in capacitors.
16.0 MHz
These values are for design guidance only.
See notes following Table 11-2.
455 kHz
2.0 MHz
4.0 MHz
8.0 MHz
Clock from
Ext. System
Mode
HS
XT
Panasonic EFO-A455K04B
Murata Erie CSA16.00MX
16.0 MHz
Murata Erie CSA2.00MG
Murata Erie CSA4.00MG
Murata Erie CSA8.00MT
Open
455 kHz
2.0 MHz
4.0 MHz
8.0 MHz
Freq
Resonators Used:
CERAMIC RESONATORS
Ranges Tested:
EXTERNAL CLOCK INPUT
OPERATION (HS, XT OR
LP OSC
CONFIGURATION)
PIC16F872
68 - 100 pF
OSC1
OSC2
15 - 68 pF
15 - 68 pF
10 - 68 pF
10 - 22 pF
OSC1
PIC16F87X
DS30221C-page 89
68 - 100 pF
15 - 68 pF
15 - 68 pF
10 - 68 pF
10 - 22 pF
OSC2
0.3%
0.5%
0.5%
0.5%
0.5%
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