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| 型號： | TMS3471C-X |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大小： | 347K |
| 代理商： | TMS3471C-X |
TMS3471C
2/3-INCH NTSC TIMER
SOCS028B – AUGUST 1991
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Refresh Pulses
PD
ABIN
GT
S1, S2,3
PS, T
244 Pulses
(see Note C)
PI
SB
See Note D
Standby Operation
ABIN
GT
S1, S2,3
PS, T
244 Pulses
256 Pulses
PI
PD
SB (see
Note A)
Power
Power-Up Operation
VD (see
Note B)
VD (see
Note B)
GP
Refresh Pulses
(see Note C)
GP
244
256
0.5 H
6.5 H
256 Pulses
256
0.5 H
244
NOTES: A. A 0.1-
F capacitor is connected between SB and GND.
B. The VD output is fed back to GP.
C. The 256 CCD refresh pulses are generated on PI, PS, and T even if VD is not fed back to GP.
D. When SB is low, PI, PS, T, S1, S2,3, GT, and PD are all low and ABIN is high.
Figure 7. Power-Up and Standby Timing
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