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NXP USA Inc. LPC2138FHN64,557 — Microcontrollers & Processors (MCU / MPU / DSP)

NXP LPC2138FHN64,557 ARM7 MCU, 60MHz, 512KB Flash, 32KB RAM

MPNLPC2138FHN64,557
Obsolete

NXP LPC2100 series ARM7TDMI-S 16/32-bit MCU, LPC2138FHN64,557, 60MHz core, 512KB Flash, 32KB RAM, 47 I/O, 3V–3.6V supply, -40°C–85°C, 64-HVQFN (9×9mm) package.

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

Specifications

LPC2138FHN64,557 specifications
ParameterValue
SeriesLPC2100
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed60MHz
PackageBag
RAM size32K x 8
Core size16/32-Bit
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, Microwire, SPI, SSI, SSP, UART/USART
Number of i (O)47
Core processorARM7®
Case64-VFQFN Exposed Pad
Data convertersA/D 16x10b; D/A 1x10b
Program memory size512KB (512K x 8)

Product details

512 KB Flash — firmware budget and field-update headroom

The 512 KB Flash (512K x 8) is sized for a substantial application image plus a bootloader for in-field firmware updates. With 32 KB SRAM, the part can hold moderate data buffers and stack depth for protocol stacks like Modbus RTU or a lightweight TCP/IP offload. The Flash is factory-programmable; no OTP lock means the firmware can be revised during production programming.

Obsolete — sourcing reality and what replaces it

NXP has marked this part as obsolete. Available through surplus and independent-distribution channel.

Mixed-signal I/O — ADC and DAC on one die

Sixteen 10-bit ADC channels and a single 10-bit DAC eliminate the need for external converters in many sensor-front-end and control-output designs. The ADC can sample up to 16 analog inputs (temperature, pressure, current sense) while the DAC provides a single analog setpoint or trim voltage. The internal oscillator further reduces external component count, though an external crystal can be used for tighter timing accuracy.

Frequently asked questions

What is the closest pin-compatible alternative to LPC2138FHN64,557 in this component family?

Within the LPC213x family, devices in the same 64-HVQFN footprint (e.g., LPC2136 or LPC2134) share the same ARM7 core and pinout but differ in Flash and RAM density. Verify your firmware size against the alternative's memory before substituting.

What is LPC2138FHN64,557's listed speed (60 MHz) on this component line?

The core processor runs at 60 MHz, which sets the instruction throughput for control loops, protocol handling, and data conversion timing.