Part Number: LG631-9R, LG6319R
Function: EEPROM for LG TV
Package: DIP 64 Pin
Manufacturers: LG
Image:
Description
The LG631-9R is an EEPROM (Electrically Erasable Programmable Read-Only Memory) device that retains stored information even when power is removed. It is typically mounted in a DIP (Dual In-line Package) with 16 pins, making it suitable for through-hole PCB designs and easy replacement during servicing.
The IC is a single-chip video and sound processor IC with a built-in microcontroller that supports all of the different worldwide broadcasting systems. The IC provides fully integrated solution to rationalize the design of color TV sets, increase productivity, and reduce total costs.
In LG TVs, this EEPROM is used to store:
1. Firmware configuration parameters
2. Factory calibration data (white balance, panel settings, etc.)
3. Region and model-specific settings
4. User settings (in some architectures)
5. Error logs / service mode data
LG631 9R 55Y7 = OICTMSA002B
LG631 9R 56N1 = OICTMSA002C
LG631 9R 57C0 = OICTMSA002D
LG631 9R 57Z2 = OICTMSA002F
LG631 9R 59H2 = OICTMSA002I
LG631 9R 5AV6 = OICTMSA002K
If corrupted, the TV may show:
1. No boot / stuck logo
2. Incorrect panel display
3. Loss of HDMI or tuner functionality
Block Diagram
LG631-9R Pinout
1. SIF OUT 1.7V
2. VIF AGC 1.2V
3. SIF IN 3.1V
4. FM FILTER 2.2V
5. FM OUT 2.3V
6. A.OUT/S.OUT TO AMP 2.2V
7. SIF-APC 2.1V
8. IF VCC 4.9V
9. AUDIO IN/AV IN 2.2V
10. ABL IN 5V
11. RGB VCC 8.2V
12. R OUT 1.4V
13. G OUT 1.4V
14. B OUT 3.1V
15. GND
16. V.RAMP 2.1V
17. V.OUT 2.3V
18. VCO IREFF 1.6V
19. H. VCCC 5V
20. H.AFC 2.6V
21. H. OUT 0.4V
22. GND 23. N.C
23. N.C
24. N.C
25. 5V
26. I.R IN 4.8V
27. N.C
28. PAL/NTSC 5V
29. PWR ON/OFF 4.7V
30. I REFF OV
31. SDA 5V
32. SCL 5V
33. XTALL IN 1.5V
34. XTALL OUT 3V
35. VCC CPU 5V
36. MUTE OV
37. N.C
38. N.C
39. KEY 5V
40. RESET 4.5V
41. PLL 2.9V
42. GND
44. FBP IN 1.1V
43. 5V
45. 2.4V
46. 2.5V
47. APC2-F 2.5V
48. 2.5V
49. 2.6V
50. XTALL 3V
51. 2.7V
52. N.C 2.8V
53. APC FILTER 3.5V
54. VIDEO IN/AV IN 2.5V
55. VCC 5V
56. VIDEO INT 2.8V
57. BLD-F 2.7V
58. APC-F 2.3V
59. AFT-F 4.7V
60. VIDEO OUT TV 3V
62. GND
61. AGC TO TUNER 4.2V
63. VIF IN 1
64. VIF IN 2
LA76931 Datasheet
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