NXP Semiconductors 1320XRFC

Overview

1320XRFC from Freescale Semiconductor is an RF daughter card designed for evaluation and development of the MC1320x 2.4 GHz transceiver IC. It integrates all off-chip RF circuitry-including balun, matching network, PCB antenna, and 16 MHz crystal-enabling functional testing without external RF components. It interfaces via SPI and GPIO to HCS08 (M68EVB908GB60) and ColdFire (M52235 EVB) microcontroller development boards for ZigBee-compliant wireless system prototyping.

For engineers reviewing the 1320XRFC datasheet, 1320XRFC pinout, 1320XRFC application, or 1320XRFC equivalent, this board supports rapid RFIC validation, firmware development, and low-power mode characterization (Doze/Hibernate wake-up via ATTN), with flexible RF interface options including onboard inverted-F antenna or SMA connector for conducted testing.

Technical Context

The 1320XRFC implements a complete reference design for the MC13202 transceiver IC, featuring a two-layer FR4 PCB with integrated 2.4 GHz inverted-F antenna and discrete balun/matching network using 1.8 nH and 3.9 nH inductors plus NP0/C0G capacitors. It provides direct SPI slave interface (MOSI, MISO, SPICLK, CE) and dedicated control lines (IRQ, RXTXEN, ATTN, RESET) for full transceiver state management.

Power delivery supports dual-voltage operation: up to 16 V input at J101 Pin 39/J102 Pin 1, regulated to 3.3 V by LP2981IM5-3.3 LDO (IC102); optional 3.6 V supply path enabled when R105/D101/C101 are mounted and R115 removed. Jumper-configurable signals include 16 MHz CLKO output and MCU wakeup routing via J103.

Key Specifications

Availability

1320XRFC is available at Aetrix Electronics and suitable for RFIC evaluation, ZigBee protocol stack development, and low-power wireless sensor node prototyping requiring stable component supply and documented reference hardware.

Supply support for 1320XRFC 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, analog, and mixed-signal ICs for automotive, industrial, and wireless applications.

The 1320XRFC belongs to Freescale's MC1320x RF evaluation platform family, developed specifically to accelerate adoption of its 2.4 GHz IEEE 802.15.4 transceivers in ZigBee and proprietary wireless mesh networks.

FAQ

What is the primary function of the 1320XRFC?

The 1320XRFC is an RF daughter card that enables hardware evaluation and firmware development for the MC13202 transceiver IC. It provides all necessary off-chip RF circuitry-including matching network, balun, 16 MHz crystal, and inverted-F PCB antenna-so engineers can validate radio performance, test SPI communication, and characterize low-power modes without designing custom RF front-end hardware. The 1320XRFC itself contains no active RF silicon beyond the MC13202 IC mounted on the board.

Which microcontroller development boards is the 1320XRFC compatible with?

The 1320XRFC is natively compatible with the M68EVB908GB60 (HCS08 family), RG60, QG60, and M52235 EVB (ColdFire family) development boards. Interconnects are defined through standardized headers J101 (40-pin) and J102 (24-pin), with pin mappings documented in Tables 5-1 and 5-2 of the MC1320xRFCUG User's Guide. While designed for these platforms, the 1320XRFC can be adapted to other MCU boards with accessible I/O ports and compatible voltage levels.

Does the 1320XRFC include an integrated antenna or require external RF cabling?

The 1320XRFC features an integrated inverted-F PCB antenna optimized for 2.4 GHz operation. It also includes an edge-mount SMA connector (J106) that can be enabled via SMT jumper relocation to route RF signals externally for conducted testing with coaxial cables. This dual-path capability allows both radiated (antenna-based) and conducted (SMA-based) RF evaluation without hardware modification.

How is power delivered to the 1320XRFC, and what voltage ranges does it support?

Power is delivered via J101 Pin 39 (GB60) or J102 Pin 1 (M52235 EVB), accepting up to 16 V DC input. An onboard LP2981IM5-3.3 LDO regulates this to a stable 3.3 V supply for the MC13202 and supporting circuitry. When configured with R105, D101, and C101 installed and R115 removed, the input path is limited to ≤3.6 V nominal (≤3.4 V recommended) for direct low-voltage interfacing. All configurations maintain strict adherence to the MC13202's VDD requirements.

Can the 1320XRFC be used to evaluate low-power modes like Doze or Hibernate?

Yes-the 1320XRFC supports full evaluation of MC13202 low-power states. The ATTN signal (J101 Pin 34 / J102 Pin 15) allows the host MCU to wake the transceiver from Doze or Hibernate modes, while GPIO1 and GPIO2 (J101 Pins 13/14 / J102 Pins 9/10) can be configured as "Out of Idle" and "CRC Valid" status indicators via register bit gpio_alt_en (Register 9, Bit 7). These functions are verified in the MC1320xRFCUG and require no additional hardware.