56F803 datasheet(38/57 Pages) FREESCALE

38 / 57 page

Reset, Stop, Wait, Mode Select, and Interrupt Timing

56F803 Technical Data, Rev. 16

Freescale Semiconductor

Edge-sensitive Interrupt Request Width

tIRW

1.5T

—

Figure 3-13

IRQA, IRQB Assertion to External Data Memory

Access Out Valid, caused by first instruction execution

in the interrupt service routine

tIDM

15T

—

Figure 3-14

IRQA, IRQB Assertion to General Purpose Output

Valid, caused by first instruction execution in the

interrupt service routine

tIG

16T

—

Figure 3-14

IRQA Low to First Valid Interrupt Vector Address Out

recovery from Wait State3

tIRI

13T

—

Figure 3-15

IRQA Width Assertion to Recover from Stop State4

tIW

—

Figure 3-16

Delay from IRQA Assertion to Fetch of first instruction

(exiting Stop)

OMR Bit 6 = 0

OMR Bit 6 = 1

tIF

—

275,000T

12T

Figure 3-16

Duration for Level Sensitive IRQA Assertion to Cause

the Fetch of First IRQA Interrupt Instruction (exiting

Stop)

OMR Bit 6 = 0

OMR Bit 6 = 1

tIRQ

—

275,000T

12T

Figure 3-17

Delay from Level Sensitive IRQA Assertion to First

Interrupt Vector Address Out Valid (exiting Stop)

OMR Bit 6 = 0

OMR Bit 6 = 1

tII

—

275,000T

12T

Figure 3-17

In the formulas, T = clock cycle. For an operating frequency of 80MHz, T = 12.5ns.

Circuit stabilization delay is required during reset when using an external clock or crystal oscillator in two cases:

• After power-on reset

• When recovering from Stop state

The minimum is specified for the duration of an edge-sensitive IRQA interrupt required to recover from the Stop state. This is

not the minimum required so that the IRQA interrupt is accepted.

The interrupt instruction fetch is visible on the pins only in Mode 3.

Parameters listed are guaranteed by design.

Table 3-11 Reset, Stop, Wait, Mode Select, and Interrupt Timing (Continued)1, 5

Operating Conditions: V

SS = VSSA = 0 V, VDD = VDDA = 3.0–3.6V, TA = –40° to +85°C, CL ≤ 50pF

Characteristic

Symbol

Min

Max

Unit

See Figure

56F803 датащи(PDF) 38 Page - Freescale Semiconductor, Inc

56F803 датащи(HTML) 38 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

датащи скачать

ссылки URL