C8051F98X View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

MFG CO.

C8051F98X

Ultra Low Power, 8-2 kB Flash, Capacitive Sensing MCU

Silicon Laboratories 

C8051F99x-C8051F98x

SFR Definition 5.4. ADC0PWR: ADC0 Burst Mode Power-Up Time

Bit

7

6

5

4

3

2

1

0

Name AD0LPM

AD0PWR[3:0]

Type R/W

R

R

R

R/W

Reset

0

0

0

0

1

1

1

1

SFR Page = All; SFR Address = 0xBB

Bit Name

Function

7

AD0LPM ADC0 Low Power Mode Enable.

Enables Low Power Mode Operation.

0: Low Power Mode disabled.

1: Low Power Mode enabled.

6:4 Unused Read = 0000b; Write = Don’t Care.

3:0 AD0PWR[3:0] ADC0 Burst Mode Power-Up Time.

Sets the time delay required for ADC0 to power up from a low power state.

For BURSTEN = 0:

ADC0 power state controlled by AD0EN.

For BURSTEN = 1 and AD0EN = 1:

ADC0 remains enabled and does not enter a low power state after

all conversions are complete.

Conversions can begin immediately following the start-of-conversion signal.

For BURSTEN = 1 and AD0EN = 0:

ADC0 enters a low power state after all conversions are complete. 

Conversions can begin a programmed delay after the start-of-conversion signal.

The ADC0 Burst Mode Power-Up time is programmed according to the following

equation:

AD0PWR = T----s---t--a---r---t--u---p-- – 1

or

400ns

Tstartup = AD0PWR + 1400ns

Note: Setting AD0PWR to 0x04 provides a typical tracking time of 2 us for the first sample

taken after the start of conversion.

Rev. 1.0

75

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