ZHCSHO8A February 2018 – April 2020 ADC08DJ3200
PRODUCTION DATA.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
LP_SLEEP_DLY | LP_WAKE_DLY | RESERVED | LP_TRIG | LP_EN | |||
R/W-010 | R/W-01 | R/W-0 | R/W-0 | R/W-0 |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
7-5 | LP_SLEEP_DLY | R/W | 010 | Adjust how long an ADC sleeps before waking up for calibration (only applies when LP_EN = 1 and LP_TRIG = 0). Values below 4 are not recommended because of limited overall power reduction benefits.
0: Sleep delay = (23 + 1) × 256 × tDEVCLK 1: Sleep delay = (215 + 1) × 256 × tDEVCLK 2: Sleep delay = (218 + 1) × 256 × tDEVCLK 3: Sleep delay = (221 + 1) × 256 × tDEVCLK 4: Sleep delay = (224 + 1) × 256 × tDEVCLK : default is approximately 1338 ms with a 3.2-GHz clock 5: Sleep delay = (227 + 1) × 256 × tDEVCLK 6: Sleep delay = (230 + 1) × 256 × tDEVCLK 7: Sleep delay = (233 + 1) × 256 × tDEVCLK |
4-3 | LP_WAKE_DLY | R/W | 01 | Adjust how much time is given up for settling before calibrating an ADC after wake-up (only applies when LP_EN = 1). Values lower than 1 are not recommended because there is insufficient time for the core to stabilize before calibration begins.
0:Wake Delay = (23 + 1) × 256 × tDEVCLK 1: Wake Delay = (218 + 1) × 256 × tDEVCLK : default is approximately 21 ms with a 3.2-GHz clock 2: Wake Delay = (221 + 1) × 256 × tDEVCLK 3: Wake Delay = (224 + 1) × 256 × tDEVCLK |
2 | RESERVED | R/W | 0 | RESERVED |
1 | LP_TRIG | R/W | 0 | 0: ADC sleep duration is set by LP_SLEEP_DLY (autonomous mode)
1: ADCs sleep until woken by a trigger; an ADC is awoken when the calibration trigger (CAL_SOFT_TRIG bit or CAL_TRIG input) is low |
0 | LP_EN | R/W | 0 | 0: Disables low-power background calibration (default)
1: Enables low-power background calibration (only applies when CAL_BG = 1) |