LM3S1138-IBZ50-A2T Texas Instruments Integrated Circuit (BGA) In Stock
LM3S1138-IBZ50-A2T is a 32-bit ARM Cortex-M3 microcontroller by Texas Instruments running at up to 50 MHz with 64 KB of on-chip flash memory. Key specs: integrated ADC, boundary scan support, 108-ball BGA package in a 10 x 10 mm footprint. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- BGA
- Pin Count
- 108
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S1138-IBZ50-A2T Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 32-bit ARM Cortex-M3 core running at 50 MHz delivers deterministic real-time performance for embedded control and connectivity applications at a competitive power budget
- 64 KB on-chip flash in a compact 108-ball BGA (10 mm x 10 mm) enables high code density in space-constrained embedded designs without external memory
- Integrated ADC and boundary scan (JTAG) support simplifies mixed-signal system integration and accelerates board-level test and debug in production environments
Applications
The LM3S1138-IBZ50-A2T suits embedded control applications in industrial automation, building automation, and connected sensor nodes where a 32-bit Cortex-M3 core at 50 MHz provides ample processing headroom for real-time tasks and communication stacks. Its integrated ADC enables direct analog sensor acquisition without external converter ICs, reducing BOM complexity. The compact 108-BGA package is ideal for high-density PCB designs in motor control, HVAC, and smart energy metering systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | YES |
| CPU Family | CORTEX-M3 |
| Clock Frequency-Max | 8.192MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | YES |
| JESD-30 Code | S-PBGA-B108 |
| JESD-609 Code | e1 |
| Low Power Mode | YES |
| Number of I/O Lines | 46 |
| Number of Serial I/Os | 7 |
| Number of Timers | 4 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | BGA108,12X12,32 |
| Package Shape | SQUARE |
| Package Style | GRID ARRAY |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 16384 |
| ROM (words) | 65536 |
| ROM Programmability | FLASH |
| Speed | 50MHz |
| Supply Voltage-Max | 2.75V |
| Supply Voltage-Min | 2.5V |
| Supply Voltage-Nom | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN SILVER COPPER |
| Terminal Form | BALL |
| Terminal Pitch | 0.8mm |
| Terminal Position | BOTTOM |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | BGA |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum clock frequency of LM3S1138-IBZ50-A2T, and how does it compare to lower-speed Stellaris variants?
The LM3S1138-IBZ50-A2T operates at a maximum CPU clock frequency of 50 MHz using the ARM Cortex-M3 core. This places it in the mid-range of the Stellaris LM3S family, offering roughly 2x the processing throughput of 25 MHz variants while consuming less power than higher-speed 80 MHz members, making it a balanced choice for real-time control tasks with moderate computational demands.
How much flash memory does LM3S1138-IBZ50-A2T include, and is external flash needed for typical firmware?
The LM3S1138-IBZ50-A2T includes 64 KB of on-chip flash memory, sufficient for most embedded firmware images including FreeRTOS kernel plus application code in the range of 32 KB to 60 KB. For applications requiring larger firmware images, external SPI or parallel flash can be added, but the 64 KB internal flash eliminates external memory for typical industrial sensor or motor control firmware.
Does LM3S1138-IBZ50-A2T include an ADC, and what sensor types can it interface directly?
Yes, the LM3S1138-IBZ50-A2T integrates an on-chip ADC, enabling direct connection of analog sensors such as temperature sensors, potentiometers, pressure transducers, and current sense resistors without external ADC ICs. This simplifies signal chain design and reduces BOM cost in industrial and building automation products where multiple analog channels need to be sampled at moderate rates.
What package does LM3S1138-IBZ50-A2T use, and what PCB design considerations apply?
The LM3S1138-IBZ50-A2T uses a 108-ball BGA package with a 10 mm x 10 mm body and fine-pitch ball array. BGA assembly requires controlled-impedance PCB routing, via-in-pad or dog-bone fanout patterns, and X-ray inspection for solder joint verification. The small BGA footprint provides a significant board area advantage over equivalent 100-pin LQFP packages, trading hand-solderability for higher integration density.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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