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| 型号： | MSP430F2370TRHAR |
| 厂商： | Texas Instruments |
| 文件页数： | 26/65页 |
| 文件大小： | 0K |
| 描述： | IC MCU 16BIT 32K FLASH 40-QFN |
| 产品培训模块： | The Ultra-Low Power MSP430 MSP430 Overview MSP430 Design Tools MSP430 Peripherals MSP430x2xx/4xx and Wireless Overview Portable Medical Solutions with MSP430 MSP430 for Utility Metering Solutions MSP430: How to JTAG MSP430, How To Use the Clock System Grace Software Graphical User Interface MCU Overview Driver Library MSP430Ware Overview |
| 标准包装： | 2,500 |
| 系列： | MSP430F2xx |
| 核心处理器： | RISC |
| 芯体尺寸： | 16-位 |
| 速度： | 16MHz |
| 连通性： | I²C，IrDA，LIN，SCI，SPI，UART/USART |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 32 |
| 程序存储器容量： | 32KB（32K x 8 + 256B） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 2K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.8 V ~ 3.6 V |
| 数据转换器： | 斜率 A/D |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 105°C |
| 封装/外壳： | 40-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 配用： | 296-23115-ND - TOOL FLASH EMU MSP430 40PIN RHA |
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MSP430F23x0
SLAS518E
– AUGUST 2006 – REVISED AUGUST 2011
Crystal Oscillator LFXT1, Low-Frequency Mode
(1)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
LFXT1 oscillator crystal
fLFXT1,LF
XTS = 0, LFXT1Sx = 0 or 1
1.8 V to 3.6 V
32768
Hz
frequency, LF mode 0, 1
LFXT1 oscillator logic level
fLFXT1,LF,logic
square wave input frequency, XTS = 0, XCAPx = 0, LFXT1Sx = 3
1.8 V to 3.6 V
10000
32768
50000
Hz
LF mode
XTS = 0, LFXT1Sx = 0,
500
fLFXT1,LF = 32768 Hz, CL,eff = 6 pF
Oscillation allowance for
OALF
k
LF crystals
XTS = 0, LFXT1Sx = 0,
200
fLFXT1,LF = 32768 Hz, CL,eff = 12 pF
XTS = 0, XCAPx = 0
1
XTS = 0, XCAPx = 1
5.5
Integrated effective load
CL,eff
pF
capacitance, LF mode(2)
XTS = 0, XCAPx = 2
8.5
XTS = 0, XCAPx = 3
11
XTS = 0, Measured at P2.0/ACLK,
Duty cycle, LF mode
2.2 V/3 V
30
50
70
%
fLFXT1,LF = 32768 Hz
Oscillator fault frequency,
fFault,LF
XTS = 0, XCAPx = 0, LFXT1Sx = 3(4)
2.2 V/3 V
10
10000
Hz
LF mode(3)
(1)
To improve EMI on the XT1 oscillator, the following guidelines should be observed.
(a) Keep the trace between the device and the crystal as short as possible.
(b) Design a good ground plane around the oscillator pins.
(c) Prevent crosstalk from other clock or data lines into oscillator pins XIN and XOUT.
(d) Avoid running PCB traces underneath or adjacent to the XIN and XOUT pins.
(e) Use assembly materials and praxis to avoid any parasitic load on the oscillator XIN and XOUT pins.
(f) If conformal coating is used, ensure that it does not induce capacitive/resistive leakage between the oscillator pins.
(g) Do not route the XOUT line to the JTAG header to support the serial programming adapter as shown in other documentation. This
signal is no longer required for the serial programming adapter.
(2)
Includes parasitic bond and package capacitance (approximately 2 pF per pin).
Because the PCB adds additional capacitance, it is recommended to verify the correct load by measuring the ACLK frequency. For a
correct setup, the effective load capacitance should always match the specification of the crystal that is used.
(3)
Frequencies below the MIN specification set the fault flag. Frequencies above the MAX specification do not set the fault flag.
Frequencies in between might set the flag.
(4)
Measured with logic-level input frequency but also applies to operation with crystals.
Internal Very-Low-Power Low-Frequency Oscillator (VLO)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
VCC
MIN
TYP
MAX
UNIT
fVLO
VLO frequency
2.2 V/3 V
4
12
20
kHz
dfVLO/dT
VLO frequency temperature drift(1)
2.2 V/3 V
0.5
%/
°C
dfVLO/dVCC
VLO frequency supply voltage drift(2)
1.8 V to 3.6 V
4
%/V
(1)
Calculated using the box method:
I version: [MAX(-40...85
°C) - MIN(-40...85°C)]/MIN(-40...85°C)/[85°C - (-40°C)]
T version: [MAX(-40...105
°C) - MIN(-40...105°C)]/MIN(-40...105°C)/[105°C - (-40°C)]
(2)
Calculated using the box method: [MAX(1.8...3.6 V) - MIN(1.8...3.6 V)]/MIN(1.8...3.6 V)/(3.6 V - 1.8 V)
32
Copyright
2006–2011, Texas Instruments Incorporated
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