參數(shù)資料
型號: C8051F010
廠商: Cygnal Technologies
英文描述: 20 MIPS,32k Flash,256 Ram,10bit ADC,64 Pin MCU(20 MIPS,32k 閃速存儲器,256 Ram,10位 ADC,64 腳 MCU)
中文描述: 20 MIPS的,32K閃存,256羊,10位ADC,64引腳微控制器(20 MIPS的,32K的閃速存儲器,256,羊,10位ADC和64腳微控制器)
文件頁數(shù): 61/170頁
文件大?。?/td> 1294K
代理商: C8051F010
4.2001; Rev. 1.3
CYGNAL Integrated Products, Inc.
2001
Page 61
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
PRELIMINARY
Figure 9.2. REF0CN: Reference Control Register
R/W
-
Bit7
R/W
-
Bit6
R/W
-
Bit5
R/W
-
Bit4
R/W
-
Bit3
R/W
R/W
BIASE
Bit1
R/W
REFBE
Bit0
Reset Value
00000000
SFR Address:
0xD1
TEMPE
Bit2
Table 9.1. Reference Electrical Characteristics
VDD = 3.0V, AV+ = 3.0V, -40
°
C to +85
°
C unless otherwise specified.
PARAMETER
INTERNAL REFERENCE (REFBE = 1)
Output Voltage
25
°
C ambient
VREF Short Circuit Current
VREF Temperature
Coefficient
Load Regulation
Load = (0-to-200
μ
A) to AGND (Note 1)
VREF Turn-on Time1
4.7
μ
F tantalum, 0.1
μ
F ceramic bypass
VREF Turn-on Time2
0.1
μ
F ceramic bypass
VREF Turn-on Time3
no bypass cap
EXTERNAL REFERENCE (REFBE = 0)
Input Voltage Range
CONDITIONS
MIN
TYP
MAX
UNITS
2.36
2.43
15
2.48
30
V
mA
ppm/
°
C
0.5
2
20
10
ppm/
μ
A
ms
μ
s
μ
s
1.00
(AV+)
– 0.3V
1
V
Input Current
Note 1: The reference can only source current. When driving an external load, it is recommended to add a load
resistor to AGND.
0
μ
A
Bits7-3: UNUSED. Read = 00000b; Write = don’t care
Bit2:
TEMPE: Temperature Sensor Enable Bit
0: Internal Temperature Sensor Off.
1: Internal Temperature Sensor On.
Bit1:
BIASE: Bias Enable Bit for ADC and DAC’s
0: Internal Bias Off.
1: Internal Bias On (required for use of ADC or DAC’s).
Bit0:
REFBE: Internal Voltage Reference Buffer Enable Bit
0: Internal Reference Buffer Off. System reference can be driven from external source on
VREF pin.
1: Internal Reference Buffer On. System reference provided by internal voltage reference.
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