Read OTP Data¶
The 128-bytes section of OTP have saved the user-defined data(OTP address from 0x0EE8 to 0x0F67) that includes the information of the display and soft-start parameters. The section will introduce how to read out the data through the SPI.
After the READ ENABLE command is set, SDA and A0 must both be set HIGH to activate the READ operation.
When this is done, CSB must be set HIGH once to halt the READ operation.
Apply command 0xB9 to read OTP data from the OTP addresses 0x0EE8 to 0x0F67.
User-defined Data¶
User’s firmware needs to read out the user-defined data with 0xB9 command, and to initialize the COG with the parameters.
| Address | Register Name | Comments |
|---|---|---|
| 0x01 | CoG Type | 0x63 (PS-type), 0x95 (KS-type, wide temp) |
| 0x02 | Vendor | Expected value 0x01 (PDI) |
| 0x03 | Waveform Rev | Revision number of the waveform |
| 0x04-0x09 | FPL Lot Name | Display FPL-LOT number with 6-character ASCII |
| 0x0A | Color | Expected value 0x00 (Black/White) |
| 0x1E | Flags | If 0xFE, Fast Update is enabled |
| 0x0B - 0x47 | Others | The area data will be used on initial process. They will be mentioned on following sections. |