PIC16F54T-I/SO Microchip Technology, PIC16F54T-I/SO Datasheet - Page 43

• Manufacturer Part Number: PIC16F54T-I/SO
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SOP,18PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F54T-I/SO

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 12
• Program Memory Size: 768B (512 x 12)
• Program Memory Type: FLASH
• Ram Size: 25 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.0
Each PIC16F5X instruction is a 12-bit word divided into
an opcode, which specifies the instruction type, and
one or more operands which further specify the opera-
tion of the instruction. The PIC16F5X instruction set
summary in Table 9-2 groups the instructions into byte-
oriented, bit-oriented, and literal and control opera-
tions. Table 9-1 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 is used to
specify which one of the 32 file registers in that bank 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 9-1:
© 2007 Microchip Technology Inc.
italics User defined term
Field
[
(
WDT
label
TOS
dest
< >
PC
TO
PD
→
W
∈
x
b
k
d
f
]
)
INSTRUCTION SET SUMMARY
Register file address (0x00 to 0x1F)
Working register (accumulator)
Bit address within an 8-bit file register
Literal field, constant data or label
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.
Destination select;
Default is d = 1
Label name
Top-of-Stack
Program Counter
Watchdog Timer Counter
Time-out bit
Power-down bit
Destination, either the W register or the
specified register file location
Options
Contents
Assigned to
Register bit field
In the set of
d = 0 (store result in W)
d = 1 (store result in file register ‘f’)
OPCODE FIELD
DESCRIPTIONS
Description
All instructions are executed within one single instruc-
tion cycle, unless a conditional test is true or the
program counter is changed as a result of an instruc-
tion. 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 would be 1 μs. If a
conditional test is true or the program counter is
changed as a result of an instruction, the instruction
execution time would be 2 μs.
Figure 9-1 shows the three general formats that the
instructions can have. All examples in the figure use
the following format to represent a hexadecimal
number:
where ‘h’ signifies a hexadecimal digit.
FIGURE 9-1:
Byte-oriented file register operations
Bit-oriented file register operations
Literal and control operations (except GOTO)
Literal and control operations - GOTO instruction
0xhhh
11
11
11
11
d = 0 for destination W
d = 1 for destination f
b = 3-bit bit address
f = 5-bit file register address
k = 8-bit immediate value
k = 9-bit immediate value
f = 5-bit file register address
OPCODE
OPCODE
OPCODE
OPCODE
6
8 7
GENERAL FORMAT FOR
INSTRUCTIONS
b (BIT #)
d
5
9
8
4
8
PIC16F5X
7
5 4
f (FILE #)
k (literal)
k (literal)
f (FILE #)
DS41213D-page 41
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