MSP430F551X_1 Datasheet, PDF (75/115 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F551x
MSP430F552x
www.ti.com
SLAS590D – OCTOBER 2009 – REVISED APRIL 2010
USB-PWR (USB Power System)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
V_LAUNCH
V_BUS
V_USB
V₁₈
I_{USB_EXT}
I_DET
I_SUSPEND
PARAMETER
TEST CONDITIONS
V_BUS detection threshold
USB bus voltage
Normal operation
USB LDO output voltage
Internal USB voltage⁽¹⁾
Maximum external current from VUSB
terminal ⁽²⁾
USB LDO current overload detection⁽³⁾
USB LDO is on
Operating supply current into VBUS terminal.⁽⁴⁾
USB LDO is on,
USB PLL disabled
V_CC
MIN TYP
3.76
3.3
1.8
60
C_BUS
VBUS terminal recommended capacitance
4.7
C_USB
VUSB terminal recommended capacitance
220
C₁₈
V18 terminal recommended capacitance
220
t_ENABLE
Settling time V_USB and V₁₈
Within 2%,
recommended capacitances
RPUR
Pullup resistance of PUR terminal
70 110
MAX
3.75
5.5
±9%
UNIT
V
V
V
V
12 mA
100 mA
250 µA
µF
nF
nF
2 ms
150 Ω
(1) This voltage is for internal usages only. No external DC loading should be applied.
(2) This represents additional current that can be supplied to the application from the VUSB terminal beyond the needs of the USB
operation.
(3) A current overload will be detected when the total current supplied from the USB LDO, including I_{USB_EXT}, exceeds this value.
(4) Does not include current contribution of Rpu and Rpd as outlined in the USB specification.
USB-PLL (USB Phase Locked Loop)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
I_PLL
f_PLL
f_UPD
t_LOCK
t_Jitter
PARAMETER
Operating supply current
PLL frequency
PLL reference frequency
PLL lock time
PLL jitter
TEST CONDITIONS
V_CC
MIN TYP
48
1.5
1000
MAX
7
3
2
UNIT
mA
MHz
MHz
ms
ps
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