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Texas Instruments LM3S6753-IBZ50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

TI LM3S6753-IBZ50-A2 ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash

MPNLM3S6753-IBZ50-A2
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 6000 microcontroller, LM3S6753-IBZ50-A2, 32-bit single-core, 50 MHz, 128 KB flash, 64 KB SRAM, Ethernet, 108-BGA (10x10 mm), -40 to 85°C.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S6753-IBZ50-A2 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 6000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTray
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityEthernet, I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
Number of i (O)41
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 4x10b
Program memory size128KB (128K x 8)

Product details

The LM3S6753-IBZ50-A2: The Cortex-M3 core runs at 50 MHz, delivering roughly 1.25 DMIPS/MHz — about 62.5 DMIPS — which is sufficient for moderate protocol stacks and control loops without external memory wait states. 128 KB of on-chip flash (128K x 8) and 64 KB SRAM (64K x 8) mean a TCP/IP stack with a small RTOS leaves about 40–50 KB free for application code and data buffers, assuming a lean Ethernet driver. The 2.25 V to 2.75 V supply range is narrower than the 3.3 V typical for many Cortex-M3 parts — the board must regulate to 2.5 V nominal, and the BOM should account for a dedicated LDO if the system rail is 3.3 V.

Peripheral set and connectivity — Ethernet plus serial flexibility

Integrated Ethernet MAC with MII/RMII interface, alongside I²C, SPI, SSI, UART/USART, IrDA, Microwire, and QEI — this peripheral mix suits industrial gateways, motor-control encoders, and sensor hubs that need both wired networking and multiple serial buses. The 4-channel 10-bit ADC (A/D 4x10b) is adequate for slow analog monitoring (temperature, voltage sense) but not for high-speed data acquisition — the 10-bit resolution and likely sub-1 Msps sample rate limit it to DC or low-frequency signals. 41 general-purpose I/O pins in the 108-BGA package — enough for a parallel LCD interface, keypad matrix, and a few external peripherals without a port expander.

Package, temperature grade, and board integration

Surface-mount assembly with standard lead-free reflow profile; the BGA's 0.8 mm pitch is within the capability of most pick-and-place lines, but X-ray inspection is recommended after reflow to catch head-in-pillow defects on the center balls.