cef830g Hope Microelectronics co., Ltd, cef830g Datasheet - Page 70

• Manufacturer Part Number: cef830g
• Description: Rf42/43 Ism Transmitter
• Manufacturer: Hope Microelectronics co., Ltd

Register 0Fh. ADC Configuration
Reset value = 00000000
Name
Type
Bit
Bit
6:4
3:2
1:0
7
Tel: [phone]
adcstart/
adcdone
adcstart/adcdone
R
D7
adcgain[1:0]
adcsel[2:0]
adcref[1:0]
Name
D6
R
Fax: [phone]
ADC Measurement Start Bit.
Reading this bit gives 1 if the ADC measurement cycle has been finished.
ADC Input Source Selection.
The internal 8-bit ADC input source can be selected as follows:
000:
001:
010:
011:
100:
101:
110:
111:
ADC Reference Voltage Selection.
The reference voltage of the internal 8-bit ADC can be selected as follows:
0X: bandgap voltage (1.2 V)
10:
11:
ADC Sensor Amplifier Gain Selection.
The full scale range of the internal 8-bit ADC in differential mode (see adcsel)
can be set
as follows:
adcref[0] = 0:
FS = 0.014 x (adcgain[1:0] + 1) x VDD FS = 0.021 x (adcgain[1:0] + 1) x VDD
adcsel[2:0]
VDD / 3
VDD / 2
D5
Internal Temperature Sensor
GPIO0, single-ended
GPIO1, single-ended
GPIO2, single-ended
GPIO0(+) – GPIO1(–), differential
GPIO1(+) – GPIO2(–), differential
GPIO0(+) – GPIO2(–), differential
GND
R
adcref[0] = 1:
R
D4
E-mail: [e-mail]
R/
D3
w
Function
adcref[1:0]
D2
R/
w
R F 4 2 / 4 3
http://www.hoperf.com
R/
D1
w
adcgain[1:0]
R/
D0
w
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