NXP LPC2106

Mfr. Part

LPC2106

Manufacturer

NXP Semiconductors (LPC2000 series; formerly from Philips, now within NXP)

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Detailed Description

LPC2106 is a 32-bit ARM7TDMI-S microcontroller from NXP’s LPC2000 family. It integrates on-chip Flash, SRAM, a PLL-based clock system, a Memory Accelerator Module (MAM), a vectored interrupt controller, and common serial/communication peripherals. It targets space- and cost-sensitive embedded control designs that need solid real-time performance and broad toolchain support.

Key Features

32-bit ARM7TDMI-S CPU, typical operation up to around 60 MHz with on-chip PLL

On-chip Flash and SRAM (LPC2106 variants commonly provide up to 128 KB Flash and up to 64 KB SRAM; confirm exact memory in the datasheet)

Memory Accelerator Module (MAM) for high-speed Flash access

Vectored Interrupt Controller for low-latency, prioritized interrupts

Clocking with on-chip oscillator and PLL; watchdog timer; brown-out detect

Communication interfaces typically include:

- 2 x UARTs for serial communications (with ISP bootloader via UART0)

- I2C-bus interface (Fast-mode capable)

- SPI/SSP interface (availability depends on sub-revision; check datasheet)

32-bit timers/counters, PWM functionality (channels depend on package)

JTAG debug interface for development

Multiple general-purpose I/Os (count depends on package; up to several dozen)

Low-power/idle modes and flexible power management

Industrial temperature range options available (verify ordering codes)

Key Advantages

Mature, proven ARM7 platform with wide ecosystem (Keil, IAR, GCC, and open-source tools)

Stable, deterministic real-time behavior suitable for control and timing-critical tasks

Small-footprint LQFP package helps reduce PCB area and cost

Integrated bootloader simplifies in-system programming via UART

Balanced set of peripherals for legacy and maintenance programs

Cost-effective choice for sustaining and extending existing ARM7 designs

Packaging

Type: LQFP-64 is the most common for LPC2106

Material: Molded epoxy package with copper leadframe; matte tin or NiPdAu lead finishes; RoHS-compliant, Pb-free options available

Size (typical for LQFP-64): 10 mm x 10 mm body, approx. 1.4 mm height, 0.5 mm lead pitch (verify exact dimensions and tolerances in the package drawing)

Pin configuration (summary): 64 leads including:

- Power pins for 3.3 V I/O domains and internal core supply decoupling

- Main/PLL clock pins (XTAL/CLKIN), reset, JTAG (TCK, TMS, TDI, TDO, nTRST)

- UART0/UART1, I2C pins (SDA/SCL), SPI/SSP pins (SCK/MOSI/MISO/SS)

- Timer/PWM outputs and multiple GPIOs

- See the datasheet pinout for exact functions and multiplexing

Thermal characteristics (typical, board-dependent):

- Junction-to-ambient (θJA): ~60–90 °C/W on 2–4 layer boards with standard copper

- Junction-to-case (θJC): ~20–30 °C/W

- Max junction temperature typically up to 125 °C (absolute maximum); observe operating ratings per grade

- Heat dissipation primarily via PCB copper; use solid ground planes and decoupling

Electrical properties (typical):

- I/O supply: ~3.0–3.6 V (commonly nominal 3.3 V)

- Internal core supply generated on-chip (with external decoupling caps to VDDCORE pins as specified)

- CPU frequency up to ~60 MHz with PLL (subject to voltage/temperature limits)

- I/O drive characteristics and input thresholds per 3.3 V CMOS levels (check datasheet for exact specs)

- Power consumption depends on clock, voltage, and peripherals; low-power modes available

Lifecycle

Status: Mature/legacy product family. Many LPC21xx parts are listed by NXP as Not Recommended for New Designs (NRND) or near end of life. Availability may be limited to sustaining programs and authorized stock.

Equivalent or alternative models:

- Pin/function-compatible within the same family (verify pinout and memory):

- LPC2104 (smaller Flash), LPC2105 (mid Flash), LPC2106 (larger Flash)

- Feature-upgrade ARM7 options (check pinout carefully):

- LPC2114/2119/2129 (add CAN and more peripherals)

- LPC2134/2136/2138 (add ADCs, USB on some variants)

- Recommended migration (new designs) to Cortex-M families:

- LPC17xx (e.g., LPC1768, Cortex-M3), LPC11xx (Cortex-M0/M0+), LPC13xx (Cortex-M3)

- For cross-brand alternatives or exact drop-in guidance, contact Y-IC for a tailored cross-reference.

If you do not see a suitable equivalent here, please contact our sales team via our website for more options, stock status, and last-time-buy opportunities.

Key Application Areas

Industrial control and automation, PLC add-ons, motion and basic motor control

Communication bridges, serial-to-serial gateways, protocol translators

Building automation, access control, security panels

Test and measurement instruments, data loggers

Embedded education platforms and prototyping

Legacy product maintenance and long-term service replacements

Datasheet

Our website provides the most authoritative and up-to-date datasheet for LPC2106. We strongly recommend downloading the datasheet from this product page to confirm exact memory sizes, pinouts, electrical limits, and package drawings.

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