參數(shù)資料
型號： PIC12F680
廠商： Microchip Technology Inc.
英文描述： 8-Pin, 8-Bit CMOS Enhanced FLASH Microcontroller with Serial I/O Interface(-2.0~5.5V,串行I/O接口,閃速微控制器)
中文描述： 8引腳，8位串行我的CMOS增強(qiáng)型閃存微控制器/ O接口（-2.0?5.5V的，串行的I / O接口，閃速微控制器）
文件頁數(shù)： 109/170頁
文件大小： 4191K
代理商： PIC12F680
2003 Microchip Technology Inc.
Preliminary
DS40300C-page 107
PIC16F62X
15.0
INSTRUCTION SET SUMMARY
Each PIC16F62X instruction is a 14-bit word divided
into an OPCODE which specifies the instruction type
and one or more operands which further specify the
operation of the instruction. The PIC16F62X instruction
set summary in Table 15-2 lists byte-oriented, bit-
oriented, and literal and control operations. Table 15-1
shows the opcode field descriptions.
For byte-oriented instructions, 'f' represents a file
register designator and 'd' represents a destination
designator. The file register designator specifies which
file register is to be used by the instruction.
The destination designator specifies where the result of
the operation is to be placed. If 'd' is zero, the result is
placed in the W register. If 'd' is one, the result is placed
in the file register specified in the instruction.
For bit-oriented instructions, 'b' represents a bit field
designator which selects the number of the bit affected
by the operation, while 'f' represents the number of the
file in which the bit is located.
For literal and control operations, 'k' represents an
eight or eleven bit constant or literal value.
TABLE 15-1:
OPCODE FIELD
DESCRIPTIONS
The instruction set is highly orthogonal and is grouped
into three basic categories:
Byte-oriented
operations
Bit-oriented
operations
Literal and control
operations
All instructions are executed within one single
instruction cycle, unless a conditional test is true or the
program counter is changed as a result of an
instruction. In this case, the execution takes two
instruction cycles with the second cycle executed as a
NOP
. One instruction cycle consists of four oscillator
periods. Thus, for an oscillator frequency of 4 MHz, the
normal instruction execution time is 1
μ
s. If a
conditional test is true or the program counter is
changed as a result of an instruction, the instruction
execution time is 2
μ
s.
Table 15-2 lists the instructions recognized by the
MPASM assembler.
Figure 15-1 shows the three general formats that the
instructions can have.
All examples use the following format to represent a
hexadecimal number:
0xhh
where h signifies a hexadecimal digit.
FIGURE 15-1:
GENERAL FORMAT FOR
INSTRUCTIONS
Field
Description
f
Register file address (0x00 to 0x7F)
W
Working register (accumulator)
b
Bit address within an 8-bit file register
k
Literal field, constant data or label
x
Don't care location (= 0 or 1)
The assembler will generate code with x = 0. It is the
recommended form of use for compatibility with all
Microchip software tools.
d
Destination select; d = 0: store result in W,
d = 1: store result in file register f.
Default is d = 1
label
Label name
TOS
Top of Stack
PC
Program Counter
PCLA
TH
Program Counter High Latch
GIE
Global Interrupt Enable bit
WDT
Watchdog Timer/Counter
TO
Timeout bit
PD
Power-down bit
dest
Destination either the W register or the specified regis-
ter file location
[ ]
Options
( )
Contents
→
Assigned to
< >
Register bit field
∈
In the set of
italics
User defined term (font is courier)
Note 1:
Any unused opcode is reserved. Use of
any reserved opcode may cause unex-
pected operation.
2:
To maintain upward compatibility with
future PICmicro
products, do not use the
OPTION
and
TRIS
instructions.
Byte-oriented file register operations
13
d = 0 for destination W
d = 1 for destination f
f = 7-bit file register address
OPCODE d f (FILE #)
Bit-oriented file register operations
OPCODE b (BIT #) f (FILE #)
b = 3-bit bit address
f = 7-bit file register address
Literal and control operations
OPCODE k (literal)
k = 8-bit immediate value
OPCODE k (literal)
k = 11-bit immediate value
General
CALL
and
GOTO
instructions only
13
8
7
6
0
13
10 9
7
0
6
13
8 7
0
11 10
0
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