Sharing the datasheet I have started for this LCD display unit.
I will update the link below with any additional information.
PM if you have anything to add or any spec requests.
This post is a copy of the information linked at the PasteBin
site below and is accurate at time of posting. Please check the
link below for any updates. Cheers!
SP740391 1707 Pinout for 3 digit, 7 segment LCD display - UPDATED!
THIS IS AN INFORMATIONAL GUIDE ONLY FOR MY USE ONLY.
I'M NEITHER QUALIFIED NOR CERTIFIED AS AN ELECTRICIAN OR ENGINEER.
IF YOU USE ANY OF THIS INFORMATION, YOU DO SO AT YOUR OWN RISK
INFO
This is a common cathode display.
(+) for all segment pins
(-) for all digit pins
5VDC power source was used.
Individual 220ohm resistors are installed for all segment pins.
LAYOUT
This model has 5 pins at the top of the display and 7 at the bottom.
Display layout = [8.:8.*8.]
Pin labels go left to right on the bottom then right to left on the top
[12 11 10 9 8]
[1 2 3 4 5 6 7]
Digits are labeled D1, D2, D3 from left to right.
D1 D2 D3
[ 8 8 8 ]
D4 controls the ":" and the "*" from the Display layout shown above.
Segment layout for D1,D2,D3. 7 segments + decimal
===A=== 10
F| |B 12 9
===G=== 8
E| |C 2 3
===D=== H 7 6
Segment layout for D4 (semicolon and the floating decimal at the top right of D2)
* 3
* 10
* 11
PINOUT
1. D1
2. E
3. C
4. D
5. D2
6. H
7. D3
8. G
9. B
10. A
11. D4
12. F