MPC823 datasheet(25/70 Pages) FREESCALE

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MPC823 ELECTRICAL SPECIFICATIONS

Table 2. Interrupt Timing

NUM

CHARACTERISTIC

25MHZ

40MHZ

50MHZ

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

I39

IRQx valid to CLKOUT rising edge (setup time)

6/6

I40

IRQx hold time after CLKOUT

2/2

I41

IRQx pulse width low

3/3

I42

IRQx pulse width high

3/3

I43

IRQx edge to edge time

160

80/80

NOTES:

The timings I39 and I40 describe the testing conditions under which the IRQ lines are tested when defined as

level sensitive. The IRQ lines are synchronized internally and do not have to be asserted or negated with

reference to the CLKOUT.

The timings I41 and I42 are speciÞed to allow the correct function of the IRQ lines detection circuitry, and has

no direct relation with the total system interrupt latency that the MPC823 can support.

Figure 20. Interrupt Detection Timing Diagram

for External Level-Sensitive Lines

CLKOUT

IRQx

I39

I40

Freescale Semiconductor, Inc.

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