C8051F997-GUR Silicon Labs, C8051F997-GUR Datasheet - Page 75

• Manufacturer Part Number: C8051F997-GUR
• Description: 8-bit Microcontrollers - MCU 8kB 14-CH CDC
• Manufacturer: Silicon Labs

Specifications of C8051F997-GUR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

SFR Definition 5.4. ADC0PWR: ADC0 Burst Mode Power-Up Time
SFR Page = All; SFR Address = 0xBB
Name
Reset
Bit
Type
6:4
3:0
7
Bit
AD0PWR[3:0] ADC0 Burst Mode Power-Up Time.
AD0LPM
AD0LPM
Unused
Name
R/W
7
0
ADC0 Low Power Mode Enable.
Enables Low Power Mode Operation.
0: Low Power Mode disabled.
1: Low Power Mode enabled.
Read = 0000b; Write = Don’t Care.
Sets the time delay required for ADC0 to power up from a low power state.
For BURSTEN = 0:
For BURSTEN = 1 and AD0EN = 1:
all conversions are complete.
Conversions can begin immediately following the start-of-conversion signal.
For BURSTEN = 1 and AD0EN = 0:
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:
Note: Setting AD0PWR to 0x04 provides a typical tracking time of 2 us for the first sample
R
6
0
or
AD0PWR
Tstartup
taken after the start of conversion.
R
5
0
=
=
ADC0 power state controlled by AD0EN.
ADC0 remains enabled and does not enter a low power state after
ADC0 enters a low power state after all conversions are complete. 
Tstartup
---------------------- 1

AD0PWR
400ns
Rev. 1.1
R
4
0
–
+
1
C8051F99x-C8051F98x
400ns
Function
3
1
AD0PWR[3:0]
2
1
R/W
1
1
0
1
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