PIC18LF2455T-I/SO Microchip Technology, PIC18LF2455T-I/SO Datasheet - Page 30
PIC18LF2455T-I/SO
Manufacturer Part Number
PIC18LF2455T-I/SO
Description
IC PIC MCU FLASH 12KX16 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PCM18XR1.pdf
(438 pages)
3.PIC18F2221-ISO.pdf
(46 pages)
4.PIC18F2455-ISO.pdf
(14 pages)
5.PIC18F2455-ISO.pdf
(8 pages)
6.PIC18F2455-ISO.pdf
(26 pages)
Specifications of PIC18LF2455T-I/SO
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
24KB (12K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
2048 B
Interface Type
SPI, I2C, EAUSART
Maximum Clock Frequency
48 MHz
Number Of Programmable I/os
24
Number Of Timers
1 x 8
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DM163014, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 10 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PCM18XR1 PDF datasheet #2
- PIC18F2221-ISO PDF datasheet #3
- PIC18F2455-ISO PDF datasheet #4
- PIC18F2455-ISO PDF datasheet #5
- PIC18F2455-ISO PDF datasheet #6
- Current page: 30 of 438
- Download datasheet (7Mb)
PIC18F2455/2550/4455/4550
2.2.5.2
The internal oscillator’s output has been calibrated at
the factory but can be adjusted in the user’s applica-
tion. This is done by writing to the OSCTUNE register
(Register 2-1). The tuning sensitivity is constant
throughout the tuning range.
The INTOSC clock will stabilize within 1 ms. Code exe-
cution continues during this shift. There is no indication
that the shift has occurred.
The OSCTUNE register also contains the INTSRC bit.
The INTSRC bit allows users to select which internal
oscillator provides the clock source when the 31 kHz
frequency option is selected. This is covered in greater
detail in Section 2.4.1 “Oscillator Control Register”.
REGISTER 2-1:
DS39632E-page 28
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6-5
bit 4-0
INTSRC
R/W-0
OSCTUNE Register
INTSRC: Internal Oscillator Low-Frequency Source Select bit
1 = 31.25 kHz device clock derived from 8 MHz INTOSC source (divide-by-256 enabled)
0 = 31 kHz device clock derived directly from INTRC internal oscillator
Unimplemented: Read as ‘0’
TUN4:TUN0: Frequency Tuning bits
01111 = Maximum frequency
•
•
00001
00000 = Center frequency. Oscillator module is running at the calibrated frequency.
11111
•
•
10000 = Minimum frequency
U-0
—
OSCTUNE: OSCILLATOR TUNING REGISTER
W = Writable bit
‘1’ = Bit is set
•
•
•
•
U-0
—
R/W-0
TUN4
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
TUN3
2.2.5.3
The internal oscillator block is calibrated at the factory
to produce an INTOSC output frequency of 8.0 MHz.
However, this frequency may drift as V
ture changes, which can affect the controller operation
in a variety of ways.
The low-frequency INTRC oscillator operates indepen-
dently of the INTOSC source. Any changes in INTOSC
across voltage and temperature are not necessarily
reflected by changes in INTRC and vice versa.
Internal Oscillator Output Frequency
and Drift
R/W-0
TUN2
© 2009 Microchip Technology Inc.
x = Bit is unknown
R/W-0
TUN1
DD
or tempera-
R/W-0
TUN0
bit 0
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