LM3S101-ERN20-C2 Texas Instruments Integrated Circuit (Other) In Stock
LM3S101-ERN20-C2 is a 32-bit ARM Cortex-M3 microcontroller from Texas Instruments featuring 2 KB SRAM, 8 KB Flash, 18 GPIO lines, integrated ADC, and boundary scan support. It operates in a 28-pin QFN package and targets low-pin-count embedded control applications.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S101-ERN20-C2 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM3S101-ERN20-C2?
- 32-bit ARM Cortex-M3 core with boundary scan support
- 8 KB on-chip Flash program memory
- 2 KB on-chip SRAM
- 18 programmable GPIO lines
- Integrated ADC for analog signal acquisition
- 28-pin QFN (R-PDSO-G28) compact package
- Operating frequency up to 32 MHz
- Low-power embedded control architecture
What is LM3S101-ERN20-C2 used for?
LM3S101-ERN20-C2 is suited for cost-sensitive embedded control applications requiring a compact 32-bit processor, including consumer electronics, home automation modules, and simple sensor interface boards. Its 18 GPIO lines and built-in ADC make it a practical choice for small motor controllers, keypad scanners, and low-power IoT edge nodes. The 28-pin QFN package enables dense PCB designs where board space is constrained.
What are the specifications of LM3S101-ERN20-C2?
| YTEOL | 0 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | YES |
| Clock Frequency-Max | 0.032MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| JESD-30 Code | R-PDSO-G28 |
| Number of I/O Lines | 18 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP28,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| RAM (bytes) | 2048 |
| ROM (words) | 8192 |
| ROM Programmability | FLASH |
| Speed | 20MHz |
| Supply Current-Max | 50mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3.3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.31.00.25 |
Where can I find the LM3S101-ERN20-C2 datasheet?
LM3S101-ERN20-C2 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3S101-ERN20-C2?
Compatible alternatives and drop-in replacements for LM3S101-ERN20-C2:
Frequently Asked Questions
How much on-chip Flash and SRAM does LM3S101-ERN20-C2 provide for firmware storage?
LM3S101-ERN20-C2 includes 8 KB of on-chip Flash for program storage and 2 KB of SRAM for runtime data. These capacities suit simple control firmware running at up to 32 MHz on the ARM Cortex-M3 core, making it appropriate for compact embedded applications with straightforward control loops and limited data buffering requirements.
Which low-pin-count embedded applications are a good fit for LM3S101-ERN20-C2?
Applications such as small motor controllers, sensor acquisition front-ends, home automation relay boards, and consumer appliance controllers are well-suited. The device provides 18 GPIO lines, an integrated ADC, and a 32-bit Cortex-M3 core in a 28-pin QFN package, offering sufficient I/O and processing capability for tasks that do not require high memory capacity or multiple communication peripherals.
Does LM3S101-ERN20-C2 support boundary scan testing for manufacturing validation?
Yes, LM3S101-ERN20-C2 includes boundary scan support compliant with JTAG standards, enabling board-level in-circuit testing during manufacturing. This feature is particularly useful when the 28-pin QFN device is soldered onto PCBs alongside other ICs, as it allows automated test equipment to verify pin connectivity and solder joint integrity without physical probing of individual signal lines.
What package does LM3S101-ERN20-C2 use and how does it compare to larger LM3S variants for space-constrained designs?
LM3S101-ERN20-C2 uses a 28-pin QFN (R-PDSO-G28) package, which is one of the smallest footprints in the LM3S family. Compared to 48-pin or 64-pin LM3S variants, the 28-pin package reduces PCB area significantly, making it the preferred choice when only 18 GPIO lines and 8 KB of Flash are sufficient and minimizing board space below 5 mm x 5 mm is a design goal.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit