PIC16F684-I/SLG Microchip, PIC16F684-I/SLG Datasheet - Page 95

• Manufacturer Part Number: PIC16F684-I/SLG
• Description: pic, flash, Microcontrollers, Microprocessors, Semiconductors and Actives, ic, mcu
• Manufacturer: Microchip

12.2
The Brown-out Detect (BOD), Power-on Reset (POR)
and 8 MHz internal oscillator (HFINTOSC) are factory
calibrated. These calibration values are stored in the
Calibration Word register, as shown in Register 12-2
and are mapped in program memory location 2008h.
The Calibration Word register is not erased when the
device is erased when using the procedure described
in the “PIC12F6XX/16F6XX Memory Programming
Specification”
necessary to store and reprogram these values when
the device is erased.
REGISTER 12-2:
 2004 Microchip Technology Inc.
bit 13
bit 13
bit 12-6
bit 5
bit 4-3
bit 2-0
—
FCAL6 FCAL5 FCAL4 FCAL3 FCAL2 FCAL1 FCAL0
Calibration Bits
Unimplemented: Read as ‘0’
FCAL<6:0>: Internal Oscillator Calibration bits
0111111 = Maximum frequency
.
.
0000001
0000000 = Center frequency
1111111
.
.
1000000 = Minimum frequency
Unimplemented: Read as ‘0’
POR<1:0>: POR Calibration bits
00 = Lowest POR voltage
11 = Highest POR voltage
BOD<2:0>: BOD Calibration bits
000 = Reserved
001 = Lowest BOD voltage
111 = Highest BOD voltage
Legend:
R = Readable
-n = Value at POR
(DS41204).
CALIB – CALIBRATION WORD (ADDRESS: 2008h)
Therefore,
W = Writable bit
‘1’ = Bit is set
it
is
Preliminary
not
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
Note:
—
memory space. It belongs to the special
configuration
3FFFh), which can be accessed only during
programming. See “PIC12F6XX/16F6XX
Memory
(DS41204) for more information.
Address 2008h is beyond the user program
POR1 POR0 BOD2 BOD1 BOD0
Programming
PIC16F684
memory
x = Bit is unknown
DS41202C-page 93
space
Specification”
(2000h-
bit 0