PIC16C642-04/SO Microchip Technology, PIC16C642-04/SO Datasheet - Page 82

• Manufacturer Part Number: PIC16C642-04/SO
• Description: IC MCU OTP 4KX14 COMP 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C642-04/SO

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Peripherals: Brown-out Detect/Reset, LED, POR, WDT
• Number Of I /o: 22
• Program Memory Type: OTP
• Ram Size: 176 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC16C
• No. Of I/o's: 22
• Ram Memory Size: 176Byte
• Cpu Speed: 4MHz
• No. Of Timers: 1
• Processor Series: PIC16C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 176 B
• Interface Type: RS- 232
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 8
• Operating Supply Voltage: 3 V to 6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

PIC16C64X & PIC16C66X
NOP
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
DS30559A-page 82
OPTION
Operands:
Syntax:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example
No Operation
[ label ]
None
No operation
None
No operation.
1
1
Load Option Register
[ label ]
None
(W)
The contents of the W register are
loaded in the OPTION register. This
instruction is supported for code com-
patibility with PIC16C5X products.
Since OPTION is a readable/writable
register, the user can directly address
it.
1
1
To maintain upward compatibility
with future PIC16CXX products, do
not use this instruction.
NOP
00
00
OPTION
NOP
OPTION
0000
0000
0110
0xx0
0010
0000
RETFIE
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
RETLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
TABLE
Return from Interrupt
[ label ]
None
TOS
1
None
Return from Interrupt. Stack is POPed
and Top of Stack (TOS) is loaded in
the PC. Interrupts are enabled by set-
ting Global Interrupt Enable bit, GIE
(INTCON<7>). This is a two cycle
instruction.
1
2
After Interrupt
Return with Literal in W
[ label ]
0
k
TOS
None
The W register is loaded with the eight
bit literal 'k'. The program counter is
loaded from the top of the stack (the
return address). This is a two cycle
instruction.
1
2
CALL TABLE
•
•
•
ADDWF PC
RETLW k1
RETLW k2
•
•
•
RETLW kn
Before Instruction
After Instruction
RETFIE
00
11
k
(W);
GIE
1996 Microchip Technology Inc.
255
PC,
PC
PC =
GIE =
W
W
RETFIE
RETLW k
0000
01xx
=
=
;W contains table
;offset value
;W now has table value
;W = offset
;Begin table
;
; End of table
TOS
1
0x07
value of k8
0000
kkkk
1001
kkkk