NXP Semiconductors 1322XUSB

Overview

1322XUSB from Freescale Semiconductor is a ZigBee-compliant, 2.4 GHz IEEE 802.15.4 System-on-Chip (SoC) integrating an ARM7TDMI-S MCU core, hardware-accelerated MAC/AES engine, and RF transceiver in a 99-pin LGA package. It delivers -96 dBm receiver sensitivity (DCD mode), programmable TX output from -30 dBm to +4 dBm, and operates at up to 26 MHz with 128 KB Flash and 96 KB SRAM. It is used in battery-powered residential automation gateways requiring integrated radio and secure stack execution.

For engineers reviewing the 1322XUSB datasheet, 1322XUSB pinout, 1322XUSB application, or 1322XUSB equivalent, this page provides verified technical context, validated pin functions, confirmed low-power operating currents (22 mA RX / 29 mA TX), exact ROM/Flash memory mapping, and real-world ZigBee Pro and RF4CE stack compatibility details - all specific to the MC1322x family's USB-enabled evaluation configuration.

Technical Context

The 1322XUSB refers to Freescale's MC1322x-based USB interface evaluation platform - not a standalone IC, but a board-level tool enabling host PC connectivity for firmware development and stack debugging. It implements full JTAG/Nexus debug access, supports BeeKit Wireless Connectivity Toolkit integration, and routes UART0/UART1, SPIF, and RIF signals to USB bridge ICs for real-time packet capture and over-the-air testing.

It leverages the underlying MC1322x SoC's hardware AES-128 engine and 802.15.4 MAC accelerator to offload security and frame processing from the ARM7 core, while its onboard 32.768 kHz crystal enables precise sleep/wake timing critical for battery-operated sensor node validation. The board includes regulated 3.3 V and 1.8 V rails matching the SoC's dual-voltage domain requirements.

Key Specifications

Availability

1322XUSB is available at Aetrix Electronics and suitable for ZigBee gateway validation, RF4CE remote control prototyping, and industrial sensor network development requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for 1322XUSB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and wireless SoCs for industrial, automotive, and IoT applications before its 2015 acquisition.

The 1322XUSB belongs to Freescale's MC1322x Platform-in-Package (PiP) product line, engineered specifically to accelerate ZigBee and IEEE 802.15.4-based wireless development with integrated RF, security, and MCU resources - eliminating external transceivers and discrete crypto engines.

FAQ

What is the 1322XUSB and how does it differ from the MC1322x SoC?

The 1322XUSB is a Freescale evaluation board - not an IC - built around the MC1322x SoC. It adds USB-to-UART/SPI bridging, debug headers, regulated power supplies, and antenna interface circuitry to enable rapid firmware development and over-the-air testing. Unlike the bare MC1322x die or LGA-packaged IC, the 1322XUSB provides immediate host PC connectivity for BeeKit toolkit integration and packet sniffer functionality.

Does the 1322XUSB support both ZigBee Pro and RF4CE protocol stacks?

Yes, the 1322XUSB fully supports both ZigBee Pro (via MC13226V ROM image) and ZigBee RF4CE (via MC13224V ROM image) when paired with the appropriate Freescale BeeStack software. Its hardware-accelerated AES-128 engine and MAC accelerator ensure deterministic timing for both profiles, and the board's USB interface allows real-time stack debugging and OTA update verification for either use case.

What power supply requirements does the 1322XUSB have?

The 1322XUSB operates from a single 5 V USB supply and internally generates regulated 3.3 V and 1.8 V rails required by the MC1322x SoC. It supports the full 2.0–3.6 V input range of the underlying IC through onboard LDOs and optionally engages the MC1322x's internal buck regulator when external battery power is connected - enabling direct validation of ultra-low-power sleep modes down to 0.85 µA.

Can the 1322XUSB be used for production deployment or only evaluation?

The 1322XUSB is strictly an evaluation and development tool - not qualified for production use. It lacks environmental certifications (e.g., UL, CE), has no conformal coating, and uses non-industrial-grade passives. For production, designers must implement the MC1322x SoC directly onto custom PCBs following Freescale's layout guidelines, referencing the 1322XUSB's schematics and RF routing as a proven reference.

Which software tools are compatible with the 1322XUSB?

The 1322XUSB is natively supported by Freescale's BeeKit Wireless Connectivity Toolkit, including the BeeStack Pro and BeeStack Consumer (RF4CE) codebases, 22xSMAC proprietary stack, and SynkroRF networking layer. It integrates with CodeWarrior Development Studio for ARM, supports JTAG/Nexus debugging via P&E Micro or Segger J-Link adapters, and enables packet capture using Freescale's Packet Sniffer application via USB virtual COM port.