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PIC16F946-E/MLQTP Datasheet(PDF) 234 Page - Microchip Technology

Part # PIC16F946-E/MLQTP
Description  28/40/44/64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology
PDF  330 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F946-E/MLQTP Datasheet(HTML) 234 Page - Microchip Technology

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PIC16F913/914/916/917/946
DS41250F-page 232
© 2007 Microchip Technology Inc.
FIGURE 16-8:
INT PIN INTERRUPT TIMING
TABLE 16-6:
SUMMARY OF INTERRUPT REGISTERS
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on all
other Resets
INTCON
GIE
PEIE
T0IE
INTE
RBIE
T0IF
INTF
RBIF
0000 000x
0000 000x
PIR1
EEIF
ADIF
RCIF
TXIF
SSPIF
CCP1IF
TMR2IF
TMR1IF
0000 0000
0000 0000
PIR2
OSFIF
C2IF
C1IF
LCDIF
—LVDIF
—CCP2IF
0000 -0-0
0000 -0-0
PIE1
EEIE
ADIE
RCIE
TXIE
SSPIE
CCP1IE
TMR2IE
TMR1IE
0000 0000
0000 0000
PIE2
OSFIE
C2IE
C1IE
LCDIE
—LVDIE
—
CCP2IE
0000 -0-0
0000 -0-0
Legend:
x
= unknown, u = unchanged, - = unimplemented locations read as ‘0’. Shaded cells are not used by the Interrupt
Module.
Q2
Q1
Q3 Q4
Q2
Q1
Q3 Q4
Q2
Q1
Q3 Q4
Q2
Q1
Q3 Q4
Q2
Q1
Q3 Q4
OSC1
CLKOUT(3)
INT pin
INTF Flag
(INTCON reg.)
GIE bit
(INTCON reg.)
Instruction Flow
PC
Instruction
Fetched
Instruction
Executed
Interrupt Latency
PC
PC + 1
PC + 1
0004h
0005h
Inst (0004h)
Inst (0005h)
Dummy Cycle
Inst (PC)
Inst (PC + 1)
Inst (PC - 1)
Inst (0004h)
Dummy Cycle
Inst (PC)
—
Note 1:
INTF flag is sampled here (every Q1).
2:
Asynchronous interrupt latency = 3-4 TCY. Synchronous latency = 3 TCY, where TCY = instruction cycle time.
Latency is the same whether Inst (PC) is a single cycle or a 2-cycle instruction.
3:
CLKOUT is available only in INTOSC and RC Oscillator modes.
4:
For minimum width of INT pulse, refer to AC specifications in Section 19.0 “Electrical Specifications”.
5:
INTF is enabled to be set any time during the Q4-Q1 cycles.
(1)
(2)
(4)
(5)
(1)



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