nRF24E1 Nordic VLSI, nRF24E1 Datasheet - Page 40

• Manufacturer Part Number: nRF24E1
• Description: 2.4Ghz RF Transceiver With Embedded 8051 Compatible Microcontroller And 9 Input, 10 Bit ADC
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
Table 5-1 : ADCCON register, SFR 0xA1, default initial data value is 0x80.
Table 5-2 : ADCSTATIC register, SFR 0xA4, default initial data value is 0x0A.
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
4 – 2
3 - 0
1 - 0
7
6
5
4
7
6
5
CSTARTN
ADCRUN
NPD
EXTREF
ADCSEL
DIFFM
SLEEP
CLK8
ADCBIAS
ADCRES
Toggle H -> L -> H to start A/D conversion.
Select reference for A/D converter
This bit is internally synchronized to the ADC clock
Ignored if ADCRUN is set..
Set to have the A/D converter run continuously
CSTARTN is ignored in this case
Set to 0 to put A/D converter in power down state
0: Use internal band gap reference (nominally 1.22V)
1: Use external pin AREF for reference
Ignored if ADCSEL=8.
Select input AIN0 to AIN7
ADCSEL=8 will select internal VDD/3, and also
automatically select internal bandgap reference
For n=0..7, ADCSEL=n will select input pin AINn
Enable differential measurements, AIN0 must be used as
inverting input and one of the other inputs AIN1 to AIN7,
as selected by ADCSEL, must be used as noninverting
input.
Set A/D converter in a reduced power mode
0 : ADC clock frequency = CPU clock divided by 32
1 : ADC clock frequency = CPU clock divided by 8
Control A/D converter bias current
No need to change for nRF24E1 operation
Select A/D converter resolution
00: 6-bit, result in ADCDATAH 5-0
01: 8-bit, result in ADCDATAH
10: 10-bit, result in ADCDATAH,ADCDATAL.7-6
11: 12-bit, result in ADCDATAH,ADCDATAL.7-4
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July 2003