PIC12F1516 MICROCHIP [Microchip Technology], PIC12F1516 Datasheet - Page 246

• Manufacturer Part Number: PIC12F1516
• Description: 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC16(L)F1516/7/8/9
22.2
The factory calibrates the internal oscillator block out-
put (INTOSC). However, the INTOSC frequency may
drift as V
affects the asynchronous baud rate. The baud rate
clock can be adjusted, but requires a reference clock
source of some kind.
22.3
REGISTER 22-1:
DS41452B-page 246
bit 7
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
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
EUSART Control Registers
DD
SREN/CREN overrides TXEN in Sync mode.
or temperature changes, and this directly
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.
R/W-0/0
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
x = Bit is unknown
‘0’ = Bit is cleared
R/W-0/0
TXEN
(1)
(1)
R/W-0/0
SYNC
Preliminary
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
R/W-0/0
SENDB
The method to adjust the value in the Baud Rate
Generator can be done automatically with the
Auto-Baud
“Auto-Baud Detect”
resolution when adjusting the Baud Rate Generator to
compensate for a gradual change in the peripheral
clock frequency.
Detect
R/W-0/0
BRGH
). There may not be fine enough
feature
 2011 Microchip Technology Inc.
TRMT
R-1/1
(see
Section 22.4.1
R/W-0/0
TX9D
bit 0