Texas Instruments SM320F2812-HT Interrupt Timing, Interrupt Switching Characteristics

SM320F2812-HT

SGUS062A –JUNE 2009 –REVISED APRIL 2010								www.ti.com
Table 6-15. External ADC Start-of-Conversion – EVA – Switching Characteristics(1) (2)
	PARAMETER					MIN	MAX	UNIT
td(XCOH-EVASOCL)	Delay time, XCLKOUT high to				low		1 × tc(SCO)	cycle
				EVASOC
tw(EVASOCL)	Pulse duration,		low			32 × tc(HCO)		ns
		EVASOC

(1)XCLKOUT = SYSCLKOUT

(2)Not production tested.

XCLKOUT

td(XCOH-EVASOCL)

tw(EVASOCL)

EVASOC

Figure 6-18. EVASOC Timing

Table 6-16. External ADC Start-of-Conversion – EVB – Switching Characteristics(1) (2)

	PARAMETER
td(XCOH-EVBSOCL)	Delay time, XCLKOUT high to				low
				EVBSOC
tw(EVBSOCL)	Pulse duration,		low
		EVBSOC

MIN

32 × tc(HCO)

MAX UNIT

1 × tc(SCO) cycle

ns

(1)XCLKOUT = SYSCLKOUT

(2)Not production tested.

XCLKOUT

td(XCOH-EVBSOCL)

tw(EVBSOCL)

EVBSOC

Figure 6-19. EVBSOC Timing

6.16.2 Interrupt Timing

Table 6-17. Interrupt Switching Characteristics

		PARAMETER		MIN		MAX	UNIT
			Without input			12
			qualifier
td(PDP-PWM)HZ	Delay time, PDPINTx low to PWM						ns
	high-impedance state		With input qualifier	1 × tc(SCO) + IQT +
						12(1)
			Without input		3 × tc(SCO)
(2)	Delay time, CxTRIP/TxCTRIP signals low		qualifier
td(TRIP-PWM)HZ	to PWM high-impedance state						ns
			With input qualifier	[2 × t	c(SCO)	] + IQT(1)
(2)	Delay time, INT low/high to
td(INT)	interrupt-vector fetch			tqual + 12tc(XCO)			ns

(1)Input Qualification Time (IQT) = [5 × QUALPRD × 2] × tc(SCO)

(2)Not production tested.

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