LP8553 datasheet(30/42 Pages) TI1

30 / 42 page

LP8553

SNVS701B – SEPTEMBER 2011 – REVISED JANUARY 2014

www.ti.com

Programming sequence (program data permanently from registers to NVM):

1. Turn on the chip by writing BL_CTL bit to 1 and BRT_MODE[1:0] to 10b (05h to address 01h)

2. Write data to EEPROM registers (address A0h…A7h).

3. Write EE_INIT to 1 in address 72h. (04h to address 72h).

4. Write EE_PROG to 1 and EE_INIT to 0 in address 72h. (02h to address 72h).

5. Wait 200 ms.

6. Write EE_PROG to 0 in address 72h. (00h to address 72h).

Read sequence (load data from NVM to registers):

1. Turn on the chip by writing BL_CTL bit to 1 and BRT_MODE[1:0] to 10b (05h to address 01h).

2. Write EE_INIT to 1 in address 72h. (04h to address 72h).

3. Write EE_READ to 1 and EE_INIT to 0 in address 72h. (01h to address 72h).

4. Wait 200 ms.

5. Write EE_READ to 0 in address 72h. (00h to address 72h).

Note: Data written to EEPROM registers is effective immediately even if the EEPROM programming sequence

has not been done. When power is turned off, the device will however lose the data if it is not programmed to the

NVM. During startup device automatically loads the data from NVM to registers.

NOTE

EEPROM NVM can be programmed or read by customer for bench validation.

Programming for production devices should be done in TI production test, where

appropriate checks will be performed to confirm EEPROM validity. Writing to EEPROM

Control register of production devices (for burning or reading EEPROM) is not

recommended. If special EEPROM configuration is required, please contact the TI Sales

Office for availability.

EEPROM Bit Explanations

EEPROM Default Values

ADDR

Default value

A0h

0111 1111

A1h

1111 0101

A2h

1011 1111

A3h

0111 1011

A4h

0010 1000

A5h

0100 1111

A6h

0110 0100

A7h

0010 1101

Submit Documentation Feedback

Product Folder Links: LP8553

LP8553 Arkusz danych(PDF) 30 Page - Texas Instruments

LP8553 Arkusz danych(HTML) 30 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Arkusz danych Pobierz

Link URL