C8051F064EK Silicon Laboratories Inc, C8051F064EK Datasheet - Page 114

• Manufacturer Part Number: C8051F064EK
• Description: KIT EVAL FOR C8051F064
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F064EK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F06x
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F064
• Silicon Family Name: C8051F06x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F064
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1219

C8051F060/1/2/3/4/5/6/7
The temperature sensor connects to the highest order input of the ADC2 input multiplexer (see
“7. 10-Bit ADC (ADC2, C8051F060/1/2/3)” on page
ables the temperature sensor. While disabled, the temperature sensor defaults to a high impedance state,
and any A/D measurements performed on the sensor while disabled result in meaningless data.
114
VDD = 3.0 V, AV+ = 3.0 V, -40 to +85 °C unless otherwise specified
Parameter
Internal Reference (REFBE = 1)
Output Voltage
VREF Power Supply Current
VREF Short-Circuit Current
VREF Temperature Coefficient
Load Regulation
VREF Turn-on Time 1
VREF Turn-on Time 2
VREF Turn-on Time 3
External Reference (REFBE = 0)
Input Voltage Range
Input Current
Bits7-4:
Bit3:
Bit2:
Bit1:
Bit0:
R/W
Bit7
-
UNUSED. Read = 0000b; Write = don’t care.
AD2VRS: ADC2 Voltage Reference Select.
0: ADC2 voltage reference from VREF2 pin.
1: ADC2 voltage reference from AV+.
TEMPE: Temperature Sensor Enable Bit.
0: Internal Temperature Sensor Off.
1: Internal Temperature Sensor On.
BIASE: ADC/DAC Bias Generator Enable Bit. (Must be ‘1’ if using ADC2 or DACs).
0: Internal Bias Generator Off.
1: Internal Bias Generator On.
REFBE: Internal Reference Buffer Enable Bit.
0: Internal Reference Buffer Off.
1: Internal Reference Buffer On. Internal voltage reference is driven on the VREF pin.
R/W
Bit6
-
Table 10.1. Voltage Reference Electrical Characteristics
Figure 10.2. REF2CN: Reference Control Register 2
R/W
Bit5
-
Conditions
25 °C ambient
Load = 0 to 200 µA to AGND
4.7 µF tantalum, 0.1 µF ceramic
bypass
0.1 µF ceramic bypass
no bypass cap
R/W
Bit4
-
AD2VRS
Rev. 1.2
R/W
Bit3
87). The TEMPE bit within REF2CN enables and dis-
TEMPE
R/W
Bit2
2.36
1.00
Min
BIASE
R/W
Bit1
2.43
Typ
0.5
50
15
20
10
2
0
SFR Address:
REFBE
SFR Page:
R/W
Bit0
(AV+) -
Max
2.48
30
0.3
1
0xD1
2
Reset Value
00000000
ppm/µA
ppm/°C
Units
mA
Section
µA
ms
µA
µs
µs
V
V