PIC14000-04I/SS Microchip Technology, PIC14000-04I/SS Datasheet - Page 91

• Manufacturer Part Number: PIC14000-04I/SS
• Description: IC, 8BIT MCU, PIC14, 4MHZ, SSOP-28
• Manufacturer: Microchip Technology

Specifications of PIC14000-04I/SS

• Controller Family/series: PIC14
• No. Of I/o's: 22
• Ram Memory Size: 192Byte
• Cpu Speed: 4MHz
• No. Of Timers: 2
• Interface: I2C
• Digital Ic Case Style: SSOP
• Core Size: 8 Bit
• Program Memory Size: 4096 X 14
• Embedded Interface Type: I2C
• Rohs Compliant: Yes
• Processor Series: PIC14000
• Core: PIC
• Data Bus Width: 8 bit
• Program Memory Type: EPROM
• Data Ram Size: 192 B
• Interface Type: SPI, UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 1
• Operating Supply Voltage: 2.7 V to 6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Development Tools By Supplier: ICE2000
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 14 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11.0
The PIC14000’s instruction set is the same as
PIC16CXX. Each 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 instruction set sum-
mary in Table 11-2 lists byte-oriented, bit-oriented, and
literal and control operations. Table 11-1 shows the
opcode field descriptions.
For byte-oriented instructions, 'f' represents a file reg-
ister designator and 'd' represents a destination desig-
nator. 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 11-1:
Field
PCLATH
label Label name
i
dest Destination either the W register or the specified
talics User defined term (font is courier)
TOS
GIE
WDT
< >
( )
1996 Microchip Technology Inc.
PC
TO
PD
[ ]
f
W
b
k
x
d
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; d = 0: store result in W,
d = 1: store result in file register f.
Default is d = 1
Top of Stack
Program Counter
Program Counter High Latch
Global Interrupt Enable bit
Watchdog Timer/Counter
Time-out bit
Power-down bit
register file location
Options
Contents
Assigned to
Register bit field
In the set of
INSTRUCTION SET SUMMARY
OPCODE FIELD
DESCRIPTIONS
Description
This document was created with FrameMaker 4 0 4
Preliminary
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 instruc-
tion cycle, unless a conditional test is true or the pro-
gram 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 instruc-
tion 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 instruc-
tion, the instruction execution time is 2 s.
Table 11-2 lists the instructions recognized by the
MPASM assembler.
Figure 11-1 shows the three general formats that the
instructions can have.
All examples use the following format to represent a
hexadecimal number:
where h signifies a hexadecimal digit.
FIGURE 11-1: GENERAL FORMAT FOR
Note:
Byte-oriented file register operations
Bit-oriented file register operations
Literal and control operations
General
CALL and GOTO instructions only
0xhh
13
13
13
13
d = 0 for destination W
d = 1 for destination f
f = 7-bit file register address
b = 3-bit bit address
f = 7-bit file register address
k = 8-bit immediate value
k = 11-bit immediate value
OPCODE
OPCODE
OPCODE
OPCODE
To maintain upward compatibility with
future PIC16CXX products, do not use the
OPTION and TRIS instructions.
11
INSTRUCTIONS
10
10 9
8
b (BIT #)
d
7
8
PIC14000
6
7
7 6
k (literal)
f (FILE #)
k (literal)
DS40122B-page 91
f (FILE #)
0
0
0
0