The JN5121 is Jennic's first in a series of low power, low cost IEEE802.15.4 compliant wireless microcontrollers. Combining an on chip 32-bit RISC core, a fully compliant 2.4GHz IEEE802.15.4 transceiver, 64Kb of ROM and 96Kb of RAM, provides a versatile low cost solution for wireless sensor networking applications.
The JN5121 wireless microcontroller combines a 32‑bit RISC CPU, a 2.4 GHz IEEE802.15.4 transceiver, 64 KB ROM, 96 KB RAM and a range of digital and analogue peripherals for sensor‑network applications. It includes hardware MAC, AES‑128 security accelerator, power‑management features and operates over an industrial temperature range.
The device is offered in an 8 × 8 mm 56‑lead QFN package, is RoHS compliant, and is supported by Jennic software libraries for rapid development of ZigBee, remote‑control and home‑automation solutions.
| Wireless standard | IEEE802.15.4 (2.4 GHz) |
|---|---|
| Sleep current | < 5A |
| RX current | < 50mA |
| TX current | < 40mA |
| Receiver sensitivity | -93 dBm |
| Transmit power | +1 dBm |
| CPU core | 16 MHz 32‑bit RISC |
| RAM | 96 KB |
| ROM | 64 KB |
| ADC | 4‑input 12‑bit |
| DACs | 2 × 11‑bit |
| Comparators | 2 |
| Temperature sensor | Integrated |
| UARTs | 2 |
| Two‑wire serial interface | Supported |
| GPIO lines | 21 |
| Operating temperature range | -40 °C to +85 °C |
| Package | 8 × 8 mm 56‑lead QFN |
| RoHS compliance | Yes |
The JN5121 supports the IEEE802.15.4 standard, including ZigBee, in the 2.4‑2.5 GHz ISM band.
It contains 64 KB of ROM, 96 KB of RAM and 128 bytes of low‑power RAM.