SE33 datasheet(90/478 Pages) MICROCHIP

Part #	SE33

Description	64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology

PDF	478 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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90 / 478 page

PIC16(L)F1946/47

DS41414D-page 90

 2010-2012 Microchip Technology Inc.

FIGURE 7-3:

INT PIN INTERRUPT TIMING

Q3 Q4

OSC1

CLKOUT

INT pin

INTF

GIE

INSTRUCTION FLOW

Instruction

Fetched

Instruction

Executed

Interrupt Latency

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 = 3-5 TCY. Synchronous latency = 3-4 TCY, where TCY = instruction cycle time.

Latency is the same whether Inst (PC) is a single cycle or a 2-cycle instruction.

3: CLKOUT not available in all Oscillator modes.

4: For minimum width of INT pulse, refer to AC specifications in Section 30.0 “Electrical Specifications””.

5: INTF is enabled to be set any time during the Q4-Q1 cycles.

(1)

(2)

(3)

(4)

(5)

(1)

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