PIC18F6621-I/PT Microchip Technology Inc., PIC18F6621-I/PT Datasheet - Page 296
PIC18F6621-I/PT
Manufacturer Part Number
PIC18F6621-I/PT
Description
64 PIN, 64 KB FLASH, 3840 RAM, 52 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F6621-IPT.pdf
(396 pages)
Specifications of PIC18F6621-I/PT
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
1024 Bytes
Input Output
54
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
64-pin TQFP
Programmable Memory
64K Bytes
Ram Size
3.8K Bytes
Speed
40 MHz
Timers
2-8-bit, 3-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F6621-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
PIC18F6621-I/PT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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PIC18F6525/6621/8525/8621
DAW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example 1:
Example 2:
DS39612B-page 294
Q Cycle Activity:
Before Instruction
After Instruction
Before Instruction
After Instruction
Decode
W
C
DC
W
C
DC
W
C
DC
W
C
DC
Q1
=
=
=
=
=
=
=
=
=
=
=
=
register W
Decimal Adjust W Register
[ label ] DAW
None
If [W<3:0> > 9] or [DC = 1] then
(W<3:0>) + 6 → W<3:0>;
else
(W<3:0>) → W<3:0>
If [W<7:4> > 9] or [C = 1] then
(W<7:4>) + 6 → W<7:4>;
else
(W<7:4>) → W<7:4>
C
DAW adjusts the eight-bit value in W
resulting from the earlier addition of two
variables (each in packed BCD format)
and produces a correct packed BCD
result.
1
1
DAW
Read
0000
Q2
0xA5
0
0
0x05
1
0
0xCE
0
0
0x34
1
0
0000
Process
Data
Q3
0000
Write
Q4
W
0111
DECF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
Before Instruction
After Instruction
Decode
CNT
Z
CNT
Z
Q1
=
=
=
=
register ‘f’
Decrement f
[ label ] DECF f [,d [,a]
0 ≤ f ≤ 255
d ∈ [0,1]
a ∈ [0,1]
(f) – 1 → dest
C, DC, N, OV, Z
Decrement register ‘f’. If ‘d’ is ‘0’, the
result is stored in W. If ‘d’ is ‘1’, the
result is stored back in register ‘f’
(default). If ‘a’ is ‘0’, the Access Bank
will be selected, overriding the BSR
value. If ‘a’ = 1, then the bank will be
selected as per the BSR value (default).
1
1
DECF
Read
0000
Q2
0x01
0
0x00
1
2005 Microchip Technology Inc.
CNT,
01da
Process
Data
Q3
1, 0
ffff
destination
Write to
Q4
ffff
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