ELM409 Operation (continued)

6 of 8

ELM409

ELM409DSA

Elm Electronics – Circuits for the Hobbyist

< http://www.elmelectronics.com/ >

Figure 5. ELM409 Timing Diagrams

The following diagrams provide a pictorial view of

each of the eight ELM409 options:

Input

(pin 5)

Output

(pin 7)

ABC = 000 or 001

25 msec or 500 msec

ABC = 010 or 011

25 msec or 500 msec

ABC = 100 or 101

ABC = 110

25 msec or 500 msec

ABC = 111

25 msec or 500 msec

50 msec

50 msec

25 msec or 500 msec

Output

(pin 7)

Output

(pin 7)

Output

(pin 7)

Output

(pin 7)