LM3S2B93 Datasheet, PDF (35/1194 Pages) Texas Instruments – Stellaris® LM3S2B93 Microcontroller

Stellaris^® LM3S2B93 Microcontroller
Table 1. Revision History (continued)
Date
March 2011
Revision Description
9538 ■ Clarified "Reset Control" section in the "System Control" chapter.
■ Corrected USB PLL speed in "Main Clock Tree" diagram.
■ Clarified Hibernation module initialization and configuration.
■ Corrected reset value for DMA Channel Wait-on-Request Status (DMAWAITSTAT) register.
■ Corrected "GPIO Pins With Non-Zero Reset Values" table.
■ Added diagram "Host-Bus Write Cycle with Multiplexed Address and Data and ALE with Dual CSn"
to EPI chapter.
■ Clarified that that the timer reload only happens in periodic mode.
■ Clarified that only bit 0 in the Watchdog Control (WDTCTL) register is protected from writes once
set.
■ Added "Sample Averaging Example" diagram to ADC chapter.
■ Corrected "SSI Timing for SPI Frame Format" figure.
■ In "Electrical Characteristics" chapter:
– Deleted T_PORMIN parameter from "Power Characteristics" table, and deleted corresponding
diagram.
– Corrected t_RDYSU parameter in "EPI General-Purpose Interface Characteristics" table and
"General-Purpose Mode iRDY Timing" diagram.
– Added t_ADCSAMP sample time parameter to "ADC Characteristics" table.
■ Additional minor data sheet clarifications and corrections.
January 2011
9161
■ Clarified Main Oscillator verification circuit sequence.
■ Added note that there must be a delay of 3 system clocks after the module clock is enabled before
any of that module's registers are accessed.
■ Added "Example Schematic for Muxed Host-Bus 16 Mode" figure to External Peripheral Interface
(EPI) chapter.
■ Clarified initialization and configuration procedure in "Analog Comparators" chapter.
■ In Electrical Characteristics chapter:
– Added specification for maximum input voltage on a non-power pin when the microcontroller is
unpowered (V_NON parameter in Maximum Ratings table).
– Replaced Preliminary Current Consumption Specifications with Nominal Power Consumption,
Maximum Current Specifications, and Typical Current Consumption vs. Frequency sections.
– Clarified Reset, and Power and Brown-out Characteristics and added a new specification for
powering down before powering back up.
– Added characteristics required when using an external regulator to provide power for V_DDC.
■ Additional minor data sheet clarifications and corrections.
January 20, 2012
35
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