LM3S9B81 Datasheet, PDF (1084/1155 Pages) Texas Instruments – Stellaris® LM3S9B81 Microcontroller

Electrical Characteristics
25.1.6
USB Module Characteristics
The Stellaris^® USB controller DC electrical specifications are compliant with the Universal Serial
Bus Specification Rev. 2.0 (full-speed and low-speed support) and the On-The-Go Supplement to
the USB 2.0 Specification Rev. 1.0. Some components of the USB system are integrated within the
LM3S9B81 microcontroller and specific to the Stellaris^® microcontroller design. An external component
resistor is needed as specified in Table 25-6.
Table 25-6. USB Controller DC Characteristics
Parameter
Parameter Name
Value
Unit
R_UBIAS
Value of the pull-down resistor on the USB0RBIAS pin
9.1K ± 1 %
Ω
25.1.7 Ethernet Controller Characteristics
Table 25-7. Ethernet Controller DC Characteristics
Parameter
R_EBIAS
Parameter Name
Value of the pull-down resistor on the ERBIAS pin
Value
12.4K ± 1 %
Unit
Ω
25.1.8
Current Specifications
This section provides information on typical and maximum power consumption under various
conditions.
25.1.8.1
Preliminary Current Consumption Specifications
The following table provides preliminary figures for current consumption while ongoing characterization
is completed.
Table 25-8. Preliminary Current Consumption
Parameter
I_{DD_RUN}
Parameter Name
Conditions
Run mode 1 (Flash loop) V_DD = 3.3 V
Code= while(1){} executed in Flash
Peripherals = All ON
I_{DD_SLEEP} Sleep mode
I_{DD_DEEPSLEEP} Deep-sleep mode
System Clock = 50 MHz (with PLL)
Temp = 25°C
V_DD = 3.3 V
Peripherals = All clock gated
System Clock = 50 MHz (with PLL)
Temp = 25°C
Peripherals = All OFF
System Clock = IOSC30KHZ/64
Temp = 25°C
Nom Max Unit
80
-
mA
8
-
mA
550
-
µA
25.2 AC Characteristics
25.2.1
Load Conditions
Unless otherwise specified, the following conditions are true for all timing measurements.
1084
Texas Instruments-Advance Information
June 29, 2010