PIC18LF14K22-E/P Microchip Technology, PIC18LF14K22-E/P Datasheet - Page 188
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PIC18LF14K22-E/P
Manufacturer Part Number
PIC18LF14K22-E/P
Description
16KB Flash, 512bytes RAM, 256bytes EEPROM, 16MIPS, NanoWatt XLP 20 PDIP .300in T
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18LF13K22-ISS.pdf
(388 pages)
Specifications of PIC18LF14K22-E/P
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
17
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC18F1XK22/LF1XK22
15.2
The factory calibrates the internal oscillator block out-
put (HFINTOSC). However, the HFINTOSC frequency
may drift as V
directly affects the asynchronous baud rate. Two meth-
ods may be used to adjust the baud rate clock, but both
require a reference clock source of some kind.
REGISTER 15-1:
DS41365D-page 188
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Note 1:
R/W-0
CSRC
Clock Accuracy with
Asynchronous Operation
SREN/CREN overrides TXEN in Sync mode.
DD
CSRC: Clock Source Select bit
Asynchronous mode:
Don’t care
Synchronous mode:
1 =
0 =
TX9: 9-bit Transmit Enable bit
1 =
0 =
TXEN: Transmit Enable bit
1 = Transmit enabled
0 = Transmit disabled
SYNC: EUSART Mode Select bit
1 = Synchronous mode
0 = Asynchronous mode
SENDB: Send Break Character bit
Asynchronous mode:
1 = Send Sync Break on next transmission (cleared by hardware upon completion)
0 = Sync Break transmission completed
Synchronous mode:
Don’t care
BRGH: High Baud Rate Select bit
Asynchronous mode:
1 = High speed
0 = Low speed
Synchronous mode:
Unused in this mode
TRMT: Transmit Shift Register Status bit
1 = TSR empty
0 = TSR full
TX9D: Ninth bit of Transmit Data
Can be address/data bit or a parity bit.
or temperature changes, and this
R/W-0
TX9
Master mode (clock generated internally from BRG)
Slave mode (clock from external source)
Selects 9-bit transmission
Selects 8-bit transmission
TXSTA: TRANSMIT STATUS AND CONTROL REGISTER
W = Writable bit
‘1’ = Bit is set
TXEN
R/W-0
(1)
(1)
R/W-0
SYNC
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
SENDB
R/W-0
The first (preferred) method uses the OSCTUNE
register to adjust the HFINTOSC output. Adjusting the
value in the OSCTUNE register allows for fine resolution
changes to the system clock source. See Section 2.7.1
“OSCTUNE Register” for more information.
The other method adjusts the value in the Baud Rate
Generator. This can be done automatically with the
Auto-Baud
“Auto-Baud Detect”). There may not be fine enough
resolution when adjusting the Baud Rate Generator to
compensate for a gradual change in the peripheral
clock frequency.
Detect
BRGH
R/W-0
feature
2010 Microchip Technology Inc.
x = Bit is unknown
TRMT
R-1
(see
Section 15.3.1
R/W-0
TX9D
bit 0
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