PIC18F2221-E/SP Microchip Technology, PIC18F2221-E/SP Datasheet - Page 293

• Manufacturer Part Number: PIC18F2221-E/SP
• Description: 4KB, Flash, 512bytes-RAM, 25I/O, 8-bit Family,nanoWatt 28 SPDIP .300in TUBE
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2221-E/SP

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DVA18XP280 - DEVICE ADAPTER 18F2220 PDIP 28LD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

BTG
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
© 2009 Microchip Technology Inc.
Q Cycle Activity:
Before Instruction:
After Instruction:
Decode
PORTC =
PORTC =
Q1
register ‘f’
BTG
Bit Toggle f
BTG f, b {,a}
0 ≤ f ≤ 255
0 ≤ b < 7
a ∈ [0,1]
(f<b>) → f<b>
None
Bit ‘b’ in data memory location ‘f’ is
inverted.
If ‘a’ is ‘0’, the Access Bank is selected.
If ‘a’ is ‘1’, the BSR is used to select the
GPR bank (default).
If ‘a’ is ‘0’ and the extended instruction
set is enabled, this instruction operates
in Indexed Literal Offset Addressing
mode whenever f ≤ 95 (5Fh). See
Section 25.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode” for details.
1
1
Read
0111
Q2
0111 0101 [75h]
0110 0101 [65h]
PIC18F2221/2321/4221/4321 FAMILY
PORTC,
bbba
Process
Data
Q3
4, 0
ffff
register ‘f’
Write
Q4
ffff
BOV
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
If Jump:
If No Jump:
Before Instruction
After Instruction
operation
Decode
Decode
PC
If Overflow
If Overflow
Q1
No
Q1
PC
PC
Read literal
Read literal
operation
Branch if Overflow
BOV
-128 ≤ n ≤ 127
If Overflow bit is ‘1’,
(PC) + 2 + 2n → PC
None
If the Overflow bit is ‘1’, then the
program will branch.
The 2’s complement number ‘2n’ is
added to the PC. Since the PC will have
incremented to fetch the next
instruction, the new address will be
PC + 2 + 2n. This instruction is then a
two-cycle instruction.
1
1(2)
HERE
1110
Q2
No
Q2
‘n’
‘n’
=
=
=
=
=
n
address (HERE)
1;
address (Jump)
0;
address (HERE + 2)
0100
BOV
operation
Process
Process
Data
Data
Q3
No
Q3
DS39689F-page 293
Jump
nnnn
operation
operation
Write to
Q4
PC
Q4
No
No
nnnn