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Nordic Semiconductor ASA has released a pair of low-cost one-time-programmable (OTP) variants of its leading nRF24LE1 and nRF24LU1+ 2.4GHz ULP wireless system-on-chip (SoC) solutions.

These new OTP product variants, the nRF24LE1 OTP and nRF24LU1+ OTP, complement Nordic’s existing solutions by targeting price sensitive yet high-volume consumer segments of the ULP wireless market; these include entry-level wireless PC peripherals (mice and keyboards), remote controls and toys.

Based on the same technology platform as the nRF24LE1 and nRF24LU1+ flash products, the new nRF24LE1 OTP and nRF24LU1+ OTP (or OTPs for short) still feature Nordic’s high-performance ULP nRF24L01+ transceiver core, enhanced 8051 microcontroller (MCU), lower power oscillators, hardware AES security, and a wide range of application peripherals and interfaces.

Both the nRF24LE1 OTP and nRF24LU1+ OTP integrate 16kBytes of program OTP and 1kByte of data OTP.

With a fully integrated charge pump the OTP is writable from the chip’s MCU, enabling the data OTP to be used for emulating non-volatile memory when required (for example to retain pairing information during a battery change).

The nRF24LE1 OTP and nRF24LU1+ OTP inherit the ULP operating characteristics of their flash-based sister products, enabling extended operation from small-capacity batteries such as AAA or coin-cell types.

For example, current consumption of the nRF24LE1+ OTP while transmitting is just 11.1mA (at 0dBm output power) and peak-receive current is 13.3mA (at 2Mbps).

Average current is in the microampere range (for a typical low duty cycle operation).

Nordic Semiconductor

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