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Texas Instruments LM3S1Z16-IQR50-C1 — Microcontrollers & Processors (MCU / MPU / DSP)

TI LM3S1Z16-IQR50-C1 ARM Cortex-M3 MCU, 50MHz, 16KB Flash, 64-LQFP

MPNLM3S1Z16-IQR50-C1
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1Z16-IQR50-C1, 32-bit single-core MCU at 50MHz, 16KB Flash (16K x 8), 6K x 8 SRAM, 33 I/O, 8-channel 10-bit ADC, I²C/SPI/UART/LIN/IrDA connectivity, 1.08V–1.32V supply, -40°C–85°C, 64-LQFP (10x10), Tray.

Texas Instruments LM3S1Z16-IQR50-C1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S1Z16-IQR50-C1 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 1000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.08V ~ 1.32V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTray
RAM size6K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART
Number of i (O)33
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 8x10b
Program memory size16KB (16K x 8)

Product details

The LM3S1Z16-IQR50-C1 is a 32-bit ARM Cortex-M3 MCU clocked at 50 MHz with 16 KB Flash and 6 KB SRAM.

Key peripherals and I/O

The MCU integrates a 10-bit ADC with 8 multiplexed channels, which covers most low-to-medium resolution analog sensing tasks without an external converter. This set allows direct connection to common industrial sensors, displays, and serial buses.

The 50 MHz core speed places this part in the mid-range of Cortex-M3 devices. It is fast enough for real-time control loops at a few kHz, Modbus RTU polling, or basic signal processing, but not intended for high-throughput data acquisition or heavy DSP workloads. For designs that need more headroom, a sibling in the same Stellaris family with a higher clock rate and larger Flash would be the next step up.

Frequently asked questions

What is the replacement for LM3S1Z16-IQR50-C1?

Texas Instruments has not listed a direct pin-compatible replacement for this part. For new designs, evaluate a current-production Cortex-M3 or Cortex-M4 MCU from TI's portfolio that matches your Flash, SRAM, and peripheral requirements.

Does LM3S1Z16-IQR50-C1 have a 10-bit ADC?

Yes, it integrates an 8-channel 10-bit ADC, suitable for reading analog sensors without an external converter.

Where can I buy LM3S1Z16-IQR50-C1?

This obsolete part is available through independent distribution. Submit an RFQ for current pricing and availability — the part is sourced to order, not stocked on the shelf.

LM3S1Z16-IQR50-C1 vs LM3S1Z16-IQR50 – what's the difference?

The -C1 suffix indicates a specific revision or packaging variant within the same base product family. The electrical and functional characteristics are expected to be identical; the -C1 variant is the later revision. Both are obsolete.