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| 型号： | MSP430F4794IPZR |
| 厂商： | Texas Instruments |
| 文件页数： | 30/80页 |
| 文件大小： | 0K |
| 描述： | IC MCU 16BIT 60KB FLASH 100LQFP |
| 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： | 1 |
| 系列： | MSP430x4xx |
| 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，LCD，POR，PWM，WDT |
| 输入/输出数： | 72 |
| 程序存储器容量： | 60KB（60K x 8 + 256B） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 2.5K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.8 V ~ 3.6 V |
| 数据转换器： | A/D 4x16b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 100-LQFP |
| 包装： | 标准包装 |
| 产品目录页面： | 714 (CN2011-ZH PDF) |
| 其它名称： | 296-24722-6 |
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MSP430F47x3, MSP430F47x4
MIXED SIGNAL MICROCONTROLLER
SLAS545C MAY 2007 REVISED MARCH 2011
36
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
crystal oscillator, LFXT1, low-frequency modes (see Note 4)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
fLFXT1, LF
LFXT1 oscillator crystal
frequency, LF mode
XTS_FLL = 0, LFXT1DIG = 0
1.8 V3.6 V
32, 768
Hz
fLFXT1, LF, logic
LFXT1 oscillator logic level
square-wave input frequency,
LF mode
XTS_FLL = 0, LFXT1DIG = 1,
XCAPx = 0
1.8 V3.6 V
10, 000
32, 768
Hz
OA
Oscillation allowance for LF
XTS_FLL = 0, LFXT1DIG = 0,
fLFXT1, LF = 32,768 kHz,
CL, eff = 6 pF
500
k
W
OALF
Oscillation allowance for LF
crystals
XTS_FLL = 0, LFXT1DIG = 0,
fLFXT1, LF = 32,768 kHz,
CL, eff = 12 pF
200
k
W
XTS_FLL = 0, XCAPx = 0
1
C
Integrated effective load
capacitance LF mode
XTS_FLL = 0, XCAPx = 1
5.5
pF
CL, eff
capacitance, LF mode
(see Note 1)
XTS_FLL = 0, XCAPx = 2
8.5
pF
(see Note 1)
XTS_FLL = 0, XCAPx = 3
11
Duty Cycle
LF mode
XTS_FLL = 0,
Measured at P1.4/ACLK,
fLFXT1, LF = 32, 768 Hz
2.2 V/3 V
30
50
70
%
fFault, LF
Oscillator fault frequency,
LF mode (see Note 3)
XTS_FLL = 0 (see Note 2)
2.2 V/3 V
10
10, 000
Hz
NOTES:
1. Includes parasitic bond and package capacitance (approximately 2pF per pin).
Since 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.
2. Measured with logic level input frequency but also applies to operation with crystals.
3. Frequencies below the MIN specification will set the fault flag, frequencies above the MAX specification will not set the fault flag.
Frequencies in between might set the flag.
4. To improve EMI on the LFXT1 oscillator the following guidelines should be observed.
Keep as short of a trace as possible between the device and the crystal.
Design a good ground plane around the oscillator pins.
Prevent crosstalk from other clock or data lines into oscillator pins XIN and XOUT.
Avoid running PCB traces underneath or adjacent to the XIN and XOUT pins.
Use assembly materials and praxis to avoid any parasitic load on the oscillator XIN and XOUT pins.
If conformal coating is used, ensure that it does not induce capacitive/resistive leakage between the oscillator pins.
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.
crystal oscillator, LFXT1, high-frequency mode
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
f
XT1 oscillator crystal frequency
XTS FLL
1 Ceramic resonator
1.8 V3.6 V
0.45
4
MHz
fXT1
XT1 oscillator crystal frequency
XTS_FLL = 1, Ceramic resonator
2.7 V3.6 V
0.45
8
MHz
f
XT1 oscillator crystal frequency
XTS FLL
1 Crystal
1.8 V3.6 V
1
4
MHz
fXT1
XT1 oscillator crystal frequency
XTS_FLL = 1, Crystal
2.7 V3.6 V
1
8
MHz
CL, eff
Integrated effective Load
Capacitance (see Note 1)
XTS_FLL = 1, XCAPx = 0
(see Note 2)
1
pF
Duty Cycle
Measured at P1.4/ACLK
2.2 V/3 V
40
50
60
%
NOTES:
1. Includes parasitic bond and package capacitance (approximately 2pF per pin).
Since 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.
2. Requires external capacitors at both terminals. Values are specified by crystal manufacturers.
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