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MSP430FG4619 bảng dữ liệu(PDF) 29 Page - Texas Instruments |
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MSP430FG4619 bảng dữ liệu(HTML) 29 Page - Texas Instruments |
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29 / 116 page  29 MSP430FG4619, MSP430FG4618, MSP430FG4617, MSP430FG4616 MSP430CG4619, MSP430CG4618, MSP430CG4617, MSP430CG4616 www.ti.com SLAS508K – APRIL 2006 – REVISED MAY 2020 Submit Documentation Feedback Product Folder Links: MSP430FG4619 MSP430FG4618 MSP430FG4617 MSP430FG4616 MSP430CG4619 MSP430CG4618 MSP430CG4617 MSP430CG4616 Specifications Copyright © 2006–2020, Texas Instruments Incorporated (1) The parasitic capacitance from the package and board may be estimated to be 2 pF. The effective load capacitor for the crystal is (CXIN × CXOUT) / (CXIN+ CXOUT). This is independent of XTS_FLL. (2) To improve EMI on the low-power LFXT1 oscillator, particularly in the LF mode (32 kHz), the following guidelines should be observed. • Keep the trace between the MCU and the crystal as short as possible. • 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 processes that avoid any parasitic load on the oscillator XIN and XOUT pins. • If conformal coating is used, ensure that it does not induce capacitive or 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. (3) TI recommends external capacitance for precision real-time clock applications; OSCCAPx = 0h. (4) Applies only when using an external logic-level clock source. XTS_FLL must be set. Not applicable when using a crystal or resonator. 5.20 Crystal Oscillator, LFXT1 Oscillator over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (1) (2) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CXIN Integrated input capacitance(3) OSCCAPx = 0h, VCC = 2.2 V, 3 V 0 pF OSCCAPx = 1h, VCC = 2.2 V, 3 V 10 OSCCAPx = 2h, VCC = 2.2 V, 3 V 14 OSCCAPx = 3h, VCC = 2.2 V, 3 V 18 CXOUT Integrated output capacitance(3) OSCCAPx = 0h, VCC = 2.2 V, 3 V 0 pF OSCCAPx = 1h, VCC = 2.2 V, 3 V 10 OSCCAPx = 2h, VCC = 2.2 V, 3 V 14 OSCCAPx = 3h, VCC = 2.2 V, 3 V 18 VIL Low-level input voltage at XIN VCC = 2.2 V, 3 V (4) VSS 0.2 × VCC V VIH High-level input voltage at XIN VCC = 2.2 V, 3 V (4) 0.8 × VCC VCC V (1) The oscillator needs capacitors at both terminals, with values specified by the crystal manufacturer. (2) Applies only when using an external logic-level clock source. Not applicable when using a crystal or resonator. 5.21 Crystal Oscillator, XT2 Oscillator over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (1) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CXT2IN Integrated input capacitance VCC = 2.2 V, 3 V 2 pF CXT2OUT Integrated output capacitance VCC = 2.2 V, 3 V 2 pF VIL Input levels at XT2IN VSS 0.2 × VCC V VIH VCC = 2.2 V, 3 V (2) 0.8 × VCC VCC V (1) Pulses on the UART receive input (UCxRX) shorter than the UART receive deglitch time are suppressed. To ensure that pulses are correctly recognized, their duration should exceed the maximum specification of the deglitch time. 5.22 USCI (UART Mode) over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT fUSCI USCI input clock frequency Internal: SMCLK, ACLK External: UCLK Duty cycle = 50% ±10% fSYSTEM MHz fBITCLK BITCLK clock frequency (equals baud rate in MBaud) 2.2 V, 3 V 1 MHz tτ UART receive deglitch time UART(1) 2.2 V 50 150 600 ns 3 V 50 100 600 |
Số phần tương tự - MSP430FG4619_V01 |
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Mô tả tương tự - MSP430FG4619_V01 |
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