PIC16C54B-04I/SO Microchip Technology, PIC16C54B-04I/SO Datasheet - Page 43

• Manufacturer Part Number: PIC16C54B-04I/SO
• Description: MICRO CTRL 512 4MHZ OTP 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C54B-04I/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 12
• Program Memory Size: 768B (512 x 12)
• Program Memory Type: OTP
• Ram Size: 25 x 8
• Voltage - Supply (vcc/vdd): 3 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: Request inventory verification / Request inventory verification
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

8.0
Each PIC16C5X 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 PIC16C5X instruction set summary in
Table 8-2 groups the instructions into byte-oriented,
bit-oriented, and literal and control operations. Table 8-1
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 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 8-1:
label
Field
dest
i
1998 Microchip Technology Inc.
talics
TOS
WDT
< >
( )
PC
TO
PD
[ ]
f
W
b
k
x
d
INSTRUCTION SET SUMMARY
Register file address (0x00 to 0x7F)
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
User defined term (font is courier)
d = 0 (store result in W)
d = 1 (store result in file register 'f')
OPCODE FIELD
DESCRIPTIONS
Description
Preliminary
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. 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 8-1 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 8-1:
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
f = 5-bit file register address
b = 3-bit bit address
f = 5-bit file register address
k = 8-bit immediate value
k = 9-bit immediate value
OPCODE
OPCODE
OPCODE
OPCODE
GENERAL FORMAT FOR
INSTRUCTIONS
6
8 7
b (BIT #)
d
5
9
8
PIC16C5X
4
8
7
5 4
f (FILE #)
k (literal)
k (literal)
f (FILE #)
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