參數(shù)資料
型號(hào)： MSP430F2254IRHA
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16 MHz, RISC MICROCONTROLLER, PQCC40
封裝： GREEN, PLASTIC, QFN-40
文件頁(yè)數(shù)： 37/94頁(yè)
文件大?。?/td> 1583K
代理商： MSP430F2254IRHA
MSP430F22x2
MSP430F22x4
SLAS504E
– JULY 2006 – REVISED MARCH 2011
Crystal Oscillator LFXT1, High-Frequency Mode
(1)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
LFXT1 oscillator crystal
fLFXT1,HF0
XTS = 1, LFXT1Sx = 0
1.8 V to 3.6 V
0.4
1
MHz
frequency, HF mode 0
LFXT1 oscillator crystal
fLFXT1,HF1
XTS = 1, LFXT1Sx = 1
1.8 V to 3.6 V
1
4
MHz
frequency, HF mode 1
1.8 V to 3.6 V
2
10
LFXT1 oscillator crystal
fLFXT1,HF2
XTS = 1, LFXT1Sx = 2
2.2 V to 3.6 V
2
12
MHz
frequency, HF mode 2
3 V to 3.6 V
2
16
1.8 V to 3.6 V
0.4
10
LFXT1 oscillator logic-level
fLFXT1,HF,logic
square-wave input frequency, HF
XTS = 1, LFXT1Sx = 3
2.2 V to 3.6 V
0.4
12
MHz
mode
3 V to 3.6 V
0.4
16
XTS = 0, LFXT1Sx = 0,
fLFXT1,HF = 1 MHz,
2700
CL,eff = 15 pF
Oscillation allowance for HF
XTS = 0, LFXT1Sx = 1,
OAHF
crystals (see Figure 18 and
fLFXT1,HF = 4 MHz,
800
CL,eff = 15 pF
XTS = 0, LFXT1Sx = 2,
fLFXT1,HF = 16 MHz,
300
CL,eff = 15 pF
Integrated effective load
CL,eff
XTS = 1 (3)
1
pF
capacitance, HF mode(2)
XTS = 1,
Measured at P1.4/ACLK,
40
50
60
fLFXT1,HF = 10 MHz
Duty cycle, HF mode
2.2 V/3 V
%
XTS = 1,
Measured at P1.4/ACLK,
40
50
60
fLFXT1,HF = 16 MHz
fFault,HF
Oscillator fault frequency (4)
XTS = 1, LFXT1Sx = 3(5)
2.2 V/3 V
30
300
kHz
(1)
To improve EMI on the XT2 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 used crystal.
(3)
Requires external capacitors at both terminals. Values are specified by crystal manufacturers.
(4)
Frequencies below the MIN specification set the fault flag, frequencies above the MAX specification do not set the fault flag, and
frequencies in between might set the flag.
(5)
Measured with logic-level input frequency, but also applies to operation with crystals.
42
Copyright
2006–2011, Texas Instruments Incorporated
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參數(shù)描述
MSP430F2254IRHAR 功能描述:16位微控制器 - MCU 16-bit Ultra-Lo-Pwr Microcontroller RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線(xiàn)寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
MSP430F2254IRHAT 功能描述:16位微控制器 - MCU 16-bit Ultra-Lo-Pwr Microcontroller RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線(xiàn)寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
MSP430F2254IYFFR 功能描述:16位微控制器 - MCU 16b Ultra-Lo-PWR MCU 16kB Flsh 512B RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線(xiàn)寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
MSP430F2254IYFFT 功能描述:16位微控制器 - MCU 16b Ultra-Lo-PWR MCU 16kB Flsh 512B RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線(xiàn)寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
MSP430F2254TDA 功能描述:16位微控制器 - MCU 16-bit Ultra-Lo-Pwr Microcontroller RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線(xiàn)寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
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