TMS3471C

2/3-INCH NTSC TIMER

SOCS028B – AUGUST 1991

15

POST OFFICE BOX 655303

GP

PI

GT

PS, T

256 Pulses

(see Note B)

6.5H

VD

ABIN

0.5H

BCP1,

BCP2

244 Pulses

(see Note A)

Normal Operation

Clear Operation

(operation

mode)

NOTES: A. When VD is low and GP goes low, 244 pulses are generated on PI, PS, and T.

B. If VD is high and not fed back to GP, then pulsing GP results in 256 pulses being generated on PI, PS, and T. This can be useful

in clearing the imager. An external logic circuit is used to pulse GP.

Figure 9. GP Timing for Normal and Clear Modes