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參數資料
| 型號： | MSP430BT5190IZQW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | RISC MICROCONTROLLER, PBGA113 |
| 封裝： | LEAD FREE, PLASTIC, BGA-113 |
| 文件頁數： | 60/97頁 |
| 文件大?。?/td> | 724K |
| 代理商： | MSP430BT5190IZQW |
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PRODUCTPREVIEW
MSP430BT5190
www.ti.com
SLAS703 – APRIL 2010
REF, External Reference
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
(1)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
VeREF+
Positive external reference voltage input
VeREF+ > VREF–/VeREF–
(2)
1.4
AVCC
V
VREF–/VeREF–
Negative external reference voltage input
VeREF+ > VREF–/VeREF–
(3)
0
1.2
V
(VeREF+ –
Differential external reference voltage
VeREF+ > VREF–/VeREF–
(4)
1.4
AVCC
V
VREF–/VeREF–)
input
1.4 V
≤ VeREF+ ≤ VAVCC ,
VeREF– = 0 V
fADC12CLK = 5
2.2 V/3 V
±8.5
±26
A
MHz,ADC12SHTx = 1h,
Conversion rate 200ksps
IVeREF+,
Static input current
IVREF–/VeREF–
1.4 V
≤ VeREF+ ≤ VAVCC ,
VeREF– = 0 V
fADC12CLK = 5
2.2 V/3 V
±1
A
MHz,ADC12SHTx = 8h,
Conversion rate 20ksps
CVREF+/-
Capacitance at VREF+/- terminal
(5)10
F
(1)
The external reference is used during ADC conversion to charge and discharge the capacitance array. The input capacitance, Ci, is also
the dynamic load for an external reference during conversion. The dynamic impedance of the reference supply should follow the
recommendations on analog-source impedance to allow the charge to settle for 12-bit accuracy.
(2)
The accuracy limits the minimum positive external reference voltage. Lower reference voltage levels may be applied with reduced
accuracy requirements.
(3)
The accuracy limits the maximum negative external reference voltage. Higher reference voltage levels may be applied with reduced
accuracy requirements.
(4)
The accuracy limits minimum external differential reference voltage. Lower differential reference voltage levels may be applied with
reduced accuracy requirements.
(5)
Two decoupling capacitors, 10F and 100nF, should be connected to VREF to decouple the dynamic current required for an external
reference source if it is used for the ADC12_A. See also the MSP430x5xx Family User's Guide (SLAU208).
REF, Built-In Reference
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
(1)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
REFVSEL = {2} for 2.5 V
REFON = REFOUT = 1
3 V
2.50
±1.5%
IVREF+= 0 A
REFVSEL = {1} for 2.0 V
Positive built-in reference
VREF+
REFON = REFOUT = 1
3 V
1.98
±1.5%
V
voltage output
IVREF+= 0 A
REFVSEL = {0} for 1.5 V
REFON = REFOUT = 1
2.2 V/ 3 V
1.49
±1.5%
IVREF+= 0 A
REFVSEL = {0} for 1.5 V, reduced
1.8
performance
AVCC minimum voltage,
REFVSEL = {0} for 1.5 V
2.2
AVCC(min)
Positive built-in reference
V
active
REFVSEL = {1} for 2.0 V
2.3
REFVSEL = {2} for 2.5 V
2.8
REFON = 1, REFOUT = 0, REFBURST = 0
3 V
100
140
A
Operating supply current into
IREF+
AVCC terminal
(2) (3)
REFON = 1, REFOUT = 1, REFBURST = 0
3 V
0.9
1.5
mA
(1)
The reference is supplied to the ADC by the REF module and is buffered locally inside the ADC. The ADC uses two internal buffers, one
smaller and one larger for driving the VREF+ terminal. When REFOUT = 1, the reference is available at the VREF+ terminal, as well as,
used as the reference for the conversion and utilizes the larger buffer. When REFOUT = 0, the reference is only used as the reference
for the conversion and utilizes the smaller buffer.
(2)
The internal reference current is supplied via terminal AVCC. Consumption is independent of the ADC12ON control bit, unless a
conversion is active. REFOUT = 0 represents the current contribution of the smaller buffer. REFOUT = 1 represents the current
contribution of the larger buffer without external load.
(3)
The temperature sensor is provided by the REF module. Its current is supplied via terminal AVCC and is equivalent to IREF+ with REFON
=1 and REFOUT = 0.
Copyright 2010, Texas Instruments Incorporated
63
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| MSP430BT5190IZQWR | 功能描述:16位微控制器 - MCU MSP430BT5190 Mixed Sig MCU RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT |
| MSP430BT5190IZQWT | 功能描述:16位微控制器 - MCU MSP430BT5190 Mixed Sig MCU RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT |
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