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Fabricante

LS7211N-S

PROGRAMMABLE DIGITAL DELAY TIMER

LSI Corporation  

TRIGGER IN

25pF

25pF

ƒ

470k

+V

S1

+V

OUTPUT

1

2

18

4

10M

5

6

7

8

A

V DD

B

TRIG

XTLI

WB0

WB1

WB2

WB3

XTLO

WB4

WB5

PSCLS

WB6

WB7

LS7212N

RESET

+V

3

17

16

15

14

13

12

11

10

1s/1m

2s/2m

4s/4m

8s/8m

16s/16m

32s/32m

64s/64m

128s/128m

s = seconds

m = minutes

Vss

9

OUT

NOTE : Crystal Frequency, ƒ = 32,768Hz

Switch: S1 low: Delay increment = 1s; Maximum Delay = 255s

S1 high: Delay increment = 1m; Maximum Delay = 255m

FIGURE 9. PROGRAMMABLE ACCURATE REAL-TIME DELAY GENERATION

The information included herein is believed to be

accurate and reliable. However, LSI Computer Systems,

Inc. assumes no responsibilities for inaccuracies, nor for

any infringements of patent rights of others which may

result from its use.

7211N-052606-7

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