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參數(shù)資料
| 型號： | PIC10F202T-I/PG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 4 MHz, RISC MICROCONTROLLER, PDIP8 |
| 封裝： | 0.300 INCH, LEAD FREE, PLASTIC, MS-001, DIP-8 |
| 文件頁數(shù)： | 49/88頁 |
| 文件大?。?/td> | 1127K |
| 代理商： | PIC10F202T-I/PG |
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2004 Microchip Technology Inc.
Preliminary
DS41239A-page 51
PIC10F200/202/204/206
10.0
INSTRUCTION SET SUMMARY
The PIC16 instruction set is highly orthogonal and is
comprised of three basic categories.
Byte-oriented operations
Bit-oriented operations
Literal and control operations
Each PIC16 instruction is a 12-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 formats for each of the categories
is presented in Figure 10-1, while the various opcode
fields are summarized in Table 10-1.
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 ‘0’, the result is
placed in the W register. If ‘d’ is ‘1’, 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
8 or 9-bit constant or literal value.
TABLE 10-1:
OPCODE FIELD
DESCRIPTIONS
All instructions are executed within a 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. One
instruction cycle consists of four oscillator periods.
Thus, for an oscillator frequency of 4 MHz, the normal
instruction execution time is 1
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
s.
Figure 10-1 shows the three general formats that the
instructions can have. All examples in the figure use
the following format to represent a hexadecimal
number:
0xhhh
where ‘h’ signifies a hexadecimal digit.
FIGURE 10-1:
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
WDT
Watchdog Timer counter
TO
Time-out bit
PD
Power-down bit
dest
Destination, either the W register or the specified
register file location
[
]
Options
(
)
Contents
→
Assigned to
< >
Register bit field
∈
In the set of
italics
User defined term (font is courier)
Byte-oriented file register operations
11
6
5
4
0
d = 0 for destination W
OPCODE
d
f (FILE #)
d = 1 for destination f
f = 5-bit file register address
Bit-oriented file register operations
11
8 7
5 4
0
OPCODE
b (BIT #)
f (FILE #)
b = 3-bit address
f = 5-bit file register address
Literal and control operations (except GOTO)
11
8
7
0
OPCODE
k (literal)
k = 8-bit immediate value
Literal and control operations – GOTO instruction
11
9
8
0
OPCODE
k (literal)
k = 9-bit immediate value
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