LM9812 datasheet(6/37 Pages) NSC

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tWR HOLD

D0-D9 data valid after rising edge of

WR (hold time)

ns (min)

AC Electrical Characteristics, MCLK Dependent

The following specifications apply for AGND=DGND=DGNDI/O=0V, VA=VD=VDI/O=+5.0VDC, VREF IN = +2.0VDC, fMCLK=24MHz,

tMCLK=1/fMCLK, tr=tf=5ns, Rs=25Ω, CL (databus loading) = 50pF/pin. Refer to Table 2: Configuration Register Parameters for limits

labeled C.R. Boldface limits apply for TA=TJ=TMIN to TMAX; all other limits TA=TJ=25°C. (Notes 7 & 8)

Symbol

Parameter

Conditions

Typical

(Note 9)

Limits

(Note 10)

Units

(Limits)

tR/S START

Rising edge of RUN/STOP to Rising

edge of SYNC

SYNC OUT mode

MCLKs (max)

tSTART

Rising edge of SYNC to rising edge

of TR1

SYNC IN mode

SYNC OUT mode

1+tGUARDBAND

13+tGUARDBAND

tGUARDBAND

14+tGUARDBAND

tGUARDBAND

MCLKs (min)

MCLKs (max)

MCLKs

tSYNC END

Falling edge of SYNC to last rising

edge of EOC

SYNC IN mode

SYNC OUT mode

MCLKs (max)

tSYNC LOW

SYNC low time

SYNC IN mode

SYNC OUT mode

# of EOL

PIxels - 4

MCLKs (min)

Pixel periods

tTR1 WIDTH,

tTR2 WIDTH

TR1, TR2 Transfer Pulse Width

C.R.

MCLKs

tGUARD

TR1, TR2 Transfer Pulse Guardband

C.R.

MCLKs

tRS WIDTH

Reset Pulse Width

C.R.

MCLKs

tCLAMP ON

Start of Optical Black clamping

period

C.R.

MCLKs

tCLAMP OFF

End of Optical Black clamping period

C.R.

MCLKs

tØ

Ø1, Ø2 clock period

Standard Mode

Even/Odd Mode

MCLKs

tRS

RS pulse position from Ø1 edge

C.R.

MCLKs

tHOLD REF

Reference hold (sample) position

from RS edge

C.R.

MCLKs

tHOLD SIG

Signal hold (sample) position from

RS edge

C.R.

MCLKs

tOCLK LOW

OCLK low time (OCLK as Output)

2 bus mode

1bus mode

2*tMCLK

1*tMCLK

tOCLK HIGH

OCLK high time (OCLK as Output)

2 bus mode

1 bus mode

2*tMCLK

3*tMCLK

tGCLK LOW

GCLK low time (GCLK as Output)

2 bus mode

1 bus mode

2*tMCLK

1*tMCLK

tGCLK HIGH

GCLK high time (GCLK as Output)

2 bus mode

1 bus mode

2*tMCLK

3*tMCLK

AC Electrical Characteristics, MCLK Independent (Continued)

The following specifications apply for AGND=DGND=DGNDI/O=0V, VA=VD=VDI/O=+5.0VDC, VREF IN = +2.0VDC, fMCLK=24MHz,

tMCLK=1/fMCLK, tr=tf=5ns, Rs=25¾, CL (databus loading) = 50pF/pin.

Boldface limits apply for TA=TJ=TMIN to TMAX; all other limits TA=TJ=25°C. (Notes 7 & 8)

Symbol

Parameter

Conditions

Typical

(Note 9)

Limits

(Note 10)

Units

(Limits)

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