PIC16C925-I/PT Microchip Technology, PIC16C925-I/PT Datasheet - Page 128

• Manufacturer Part Number: PIC16C925-I/PT
• Description: IC MCU OTP 4KX14 LCD DVR 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C925-I/PT

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Type: OTP
• Ram Size: 176 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Controller Family/series: PIC16C
• No. Of I/o's: 25
• Ram Memory Size: 176Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• No. Of Pwm Channels: 1
• Embedded Interface Type: I2C, SPI
• Rohs Compliant: Yes
• Processor Series: PIC16C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 176 B
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 3
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 5 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DVA16PQ640 - ADAPTER DEVICE FOR MPLAB-ICEAC164023 - MODULE SKT PROMATEII 68TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC16C925I/PT

PIC16C925/926
RETFIE
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example
DS39544A-page 126
After Interrupt:
2nd Cycle
1st Cycle
PC =
GIE =
TOS
1
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
RETFIE
Operation
Decode
Q1
00
No
GIE
PC,
RETFIE
Operation
Operation
0000
Q2
No
No
Operation
Set the
GIE bit
0000
Q3
No
Operation
Pop from
the Stack
1001
Preliminary
Q4
No
RETLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example
Before Instruction:
After Instruction:
2nd Cycle
1st Cycle
W
W
TABLE ADDWF PC
=
=
0x07
value of k8
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 ;W contains table
•
•
RETLW k1
RETLW k2
•
•
•
RETLW kn
Operation
Decode
Q1
11
k
No
(W);
2001 Microchip Technology Inc.
255
PC
RETLW k
Operation
literal ’k’
01xx
Read
Q2
;offset value
;W = offset
;Begin table
;
; End of table
No
;W now has table value
Operation
Operation
kkkk
Q3
No
No
Write to W,
Pop from
the Stack
Operation
kkkk
Q4
No