TMS320_13 datasheet(36/70 Pages) TI1

Part #	TMS320

Description	TMS320 SECOND GENERATION DIGITAL SIGNAL PROCESSORS

PDF	70 Pages

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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36 / 70 page

TMS320C25 50

SPRS010B — MAY 1987 — REVISED NOVEMBER 1990

POST OFFICE BOX 1443

 HOUSTON, TEXAS 77001

+5 V

fcrystal

4.7 k

10 k

74HC04

F11

CLKIN

47 pF

74AS04

10 k

C = 20 pF

0.1 F

TMS320C25

TMS320C25-50

TMS320E25

40.96

51.20

40.96

1.8

1.0

1.8

fcrystal, (MHz)

L, (H)

Figure 7. External Clock Option

timing requirements over recommended operating conditions (see Note 3)

MIN

NOM

MAX

UNIT

tc(CI)

CLKIN cycle time

19.5

150

tf(CI)

CLKIN fall time

5†

tr(CI)

CLKIN rise time

5†

tw(CIL)

CLKIN low pulse duration, tc(CI) =50ns(seeNote4)

tw(CIH)

CLKIN high pulse duration, tc(CI) =50ns(seeNote4)

tsu(S)

SYNC setup time before CLKIN low

Q-- 4

th(S)

SYNC hold time from CLKIN low

† Value derived from characterization data and not tested.

NOTES: 3. Q = 1/4 tc(C)

4. CLKIN duty cycle [tr(CI) +tw(CIH)]/tc(CI) must be within 40-60%.

TMS320 Datasheet(PDF) 36 Page - Texas Instruments

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