ZHCSD61L July 2012 – May 2019 LP8556
PRODUCTION DATA.
Address A0h
| CFG0 REGISTER | |||||||
|---|---|---|---|---|---|---|---|
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| CURRENT LSB[7:0] | |||||||
| NAME | BIT | ACCESS | DESCRIPTION | ||||
| CURRENT LSB | 7:0 | R/W | The 8-bits in this register (LSB) along the 4-bits defined in CFG1 Register (MSB) allow LED current to be set in 12-bit fine steps. These 12-bits further scale the maximum LED current set using CFG1 Register, CURRENT_MAX bits (denoted as IMAX ). If ISET_EN = 0, the LED current is defined with the bits as shown below. If ISET_EN = 1, then the external resistor connected to the ISET pin scales the LED current as shown below. | ||||
| ISET_EN = 0 | ISET_EN = 1 | ||||||
| 0000 0000 0000 | 0A | 0A | |||||
| 0000 0000 0001 | (1/4095) × IMAX | (1/4095) × IMAX × 20,000 × 1.2V / RISET | |||||
| 0000 0000 0010 | (2/4095) × IMAX | (2/4095) x IMAX × 20,000 × 1.2V / RISET | |||||
| ... | ... | ... | |||||
| 0111 1111 1111 | (2047/4095) × IMAX | (2047/4095) × IMAX × 20,000 × 1.2V / RISET | |||||
| ... | ... | ... | |||||
| 1111 1111 1101 | (4093/4095) × IMAX | (4093/4095) × IMAX × 20,000 × 1.2V / RISET | |||||
| 1111 1111 1110 | (4094/4095) × IMAX | (4094/4095) × IMAX × 20,000 x 1.2V / RISET | |||||
| 1111 1111 1111 | (4095/4095) × IMAX | (4095/4095) × IMAX × 20,000 x 1.2V / RISET | |||||