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Home Products Integrated Circuits (ICs)Embedded - Microcontrollers~~LM3S300-EGZ25-C2T~~

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LM3S300-EGZ25-C2T - Texas Instruments

Manufacturer Part Number: LM3S300-EGZ25-C2T

Manufacturer: Texas Instruments

Allelco Part Number: 98D-LM3S300-EGZ25-C2T

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 15,888 pcs available, New & Original

Parts Description: IC MCU 32BIT 16KB FLASH 48VQFN

Package: 48-VQFN (7x7)

Data sheet: -

RoHs Status: ROHS3 Compliant

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In stock: 15888

Unit Price: $2.094
Subtotal: $0.00

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Quantity	Unit Price	Ext. Price
1+	$2.094	$2.09
200+	$0.835	$167.00
500+	$0.807	$403.50
1000+	$0.794	$794.00

The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

LM3S300-EGZ25-C2T Tech Specifications
Texas Instruments - LM3S300-EGZ25-C2T technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - LM3S300-EGZ25-C2T

Product Attribute	Attribute Value
Manufacturer	Texas Instruments
Voltage - Supply (Vcc/Vdd)	3V ~ 3.6V
Supplier Device Package	48-VQFN (7x7)
Speed	25MHz
Series	Stellaris® ARM® Cortex®-M3S 300
RAM Size	4K x 8
Program Memory Type	FLASH
Program Memory Size	16KB (16K x 8)
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Package / Case	48-VFQFN Exposed Pad
Package	Tape & Reel (TR)

Product Attribute	Attribute Value
Oscillator Type	Internal
Operating Temperature	-40°C ~ 105°C (TA)
Number of I/O	36
Mounting Type	Surface Mount
EEPROM Size	-
Data Converters	-
Core Size	32-Bit Single-Core
Core Processor	ARM® Cortex®-M3
Connectivity	I²C, Microwire, SPI, SSI, UART/USART
Base Product Number	LM3S300

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)
REACH Status	REACH Unaffected
ECCN	3A991A2
HTSUS	8542.31.0001

Frequently Asked Questions(FAQ)

What is the maximum operating frequency and supply voltage range for the LM3S300-EGZ25-C2T microcontroller?: The LM3S300-EGZ25-C2T operates at a maximum clock speed of 25 MHz using an ARM® Cortex®-M3 core, with a supply voltage range of 3.0 V to 3.6 V. This voltage tolerance supports reliable operation in systems where input power may fluctuate slightly above nominal 3.3 V levels.

How does the flash memory capacity of the LM3S300-EGZ25-C2T compare to other microcontrollers in the Stellaris family when used in embedded motor control applications?: With 16 KB of on-chip flash memory, the LM3S300-EGZ25-C2T offers limited program storage compared to higher-end Stellaris variants like the LM3S9Bxx series. For complex motor control algorithms requiring extensive lookup tables or state machines, this constraint necessitates careful code optimization or external memory use.

Can the LM3S300-EGZ25-C2T be safely used in automotive-grade temperature environments without additional thermal management?: Yes, the device is rated for operation from -40°C to +105°C, making it suitable for industrial and some harsh-environment applications. However, sustained high-frequency operation near the upper temperature limit may require derating of performance due to reduced transistor switching speeds.

What are the key trade-offs when selecting between internal oscillator mode and an external crystal for systems using the LM3S300-EGZ25-C2T?: Using the internal oscillator reduces component count and board space but provides less precise timing (±2% accuracy), which may affect UART baud rate accuracy or I2C communication reliability over long distances. External crystals offer better stability but increase BOM cost and assembly complexity.

Is the LM3S300-EGZ25-C2T compatible with standard 3.3 V logic levels, and what level-shifting considerations apply if interfacing with 5 V peripherals?: The device accepts 3.0–3.6 V inputs, so direct connection to 5 V signals risks damaging GPIO pins. Level shifters or resistors in series with pull-up networks must be employed to ensure safe interface operation, particularly for UART, SPI, or I2C lines connected to legacy 5 V subsystems.

How does the number of available I/O pins on the 48-VQFN package influence PCB layout decisions when integrating the LM3S300-EGZ25-C2T into compact designs?: The 48-pin VQFN provides 36 general-purpose I/Os, sufficient for moderate sensor or actuator interfaces. However, the small footprint demands tight trace spacing and careful grounding strategies to avoid noise coupling, especially since all I/Os share common ground planes that can become current return paths.

What watchdog timer configuration options exist on the LM3S300-EGZ25-C2T, and how do they impact system reliability in battery-powered applications?: The microcontroller features both windowed and independent watchdog timers that can reset the system if software fails to service them within defined intervals. In low-power modes, only the independent watchdog remains active, enabling fail-safe recovery without waking the main processor unnecessarily.

Does the LM3S300-EGZ25-C2T support in-system programming, and what development tools are required to reprogram its flash memory during field updates?: Yes, the device supports in-circuit serial programming (ICSP) via JTAG/SWD interfaces, allowing firmware updates without removing components. TI’s Code Composer Studio or Energia IDE can be used, provided the bootloader is preserved and flash protection bits are correctly configured before deployment.

What is the moisture sensitivity level (MSL) classification for the LM3S300-EGZ25-C2T, and how should it affect handling procedures during reflow soldering?: Rated MSL 3 (168-hour floor life), the part requires dry storage and baking if exposed to ambient humidity beyond 30% RH for extended periods before assembly. Reflow profiles must comply with JEDEC J-STD-020 to prevent delamination of the VQFN package during thermal cycling.

How does the lack of EEPROM memory in the LM3S300-EGZ25-C2T affect data logging implementations compared to similar microcontrollers?: Without dedicated EEPROM, persistent data storage requires emulating nonvolatile memory using flash sectors, which incurs erase/write cycles and reduces overall flash lifespan. For frequent logging applications, an external FRAM or serial EEPROM chip becomes necessary unless write frequency is very low.

What peripheral combinations make the LM3S300-EGZ25-C2T well-suited for simple sensor node applications?: The integrated UART, SPI, I2C, and PWM peripherals enable efficient communication with temperature sensors, accelerometers, or motor drivers while consuming minimal CPU cycles. Combined with internal brownout detection and power-on reset, these features support robust standalone sensor nodes with minimal external circuitry.

Are there any known limitations in interrupt latency when using multiple simultaneous peripheral interrupts with the LM3S300-EGZ25-C2T?: As an ARM Cortex-M3 device, the LM3S300-EGZ25-C2T supports nested vectored interrupt controller (NVIC) prioritization, but worst-case interrupt latency exceeds 16 clock cycles (~640 ns at 25 MHz). High-priority real-time events may experience jitter if lower-priority ISRs consume excessive CPU time.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments LM3S300-EGZ25-C2T

Product Attribute
Part Number	LM3S300-EGZ25-C2	LM3S300-IGZ25-C2T	LM3S301-EGZ20-C2T	LM3S300-EQN25-C2T
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Series	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Connectivity	-	-	-	-
Peripherals	-	-	-	-
Core Processor	-	-	-	-
EEPROM Size	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Core Size	-	-	-	-
Program Memory Size	-	-	-	-
Oscillator Type	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Number of I/O	-	-	-	-
Data Converters	-	-	-	-
RAM Size	-	-	-	-
Speed	-	-	-	-
Program Memory Type	-	-	-	-
Voltage - Supply (Vcc/Vdd)	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount

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Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
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