User Manual
Table Of Contents
- 1 Introduction
- 2 Features
- 3 Transceiver description
- 4 System and power management
- 5 Radio Peripherals
- 6 MKW2xDxxxV operating modes
- 7 MKW2xDxxxV electrical characteristics
- 8 MCU Electrical characteristics
- 8.1 Maximum ratings
- 8.2 General
- 8.3 LVD and POR operating requirements
- 8.4 Switching specification
- 8.5 Core modules
- 8.6 Clock modules
- 8.7 Memories and memory interfaces
- 8.8 Analog
- 8.9 Communication interfaces
- 8.9.1 USB electrical specifications
- 8.9.2 USB DCD electrical specifications
- 8.9.3 VREG electrical specifications
- 8.9.4 DSPI switching specifications (limited voltate range)
- 8.9.5 DSPI switching specification (full voltage range)
- 8.9.6 Normal Run, Wait and Stop mode performance over the fulloperating voltage range
- 8.9.7 VLPR, VLPW, and VLPS mode performance over the full operating voltage range
- 9 Transceiver electrical characteristics
- 10 Crystal oscillator reference frequency
- 11 Pin assignments
- 12 Packaging information
MKW2xDxxxV Product Electrical Specification, Rev. 0.1
70 Freescale Semiconductor
10 Crystal oscillator reference frequency
This section provides application specific information regarding crystal oscillator reference design and
recommended crystal usage.
10.1 Crystal oscillator design considerations
The IEEE ® 802.15.4 Standard requires that frequency tolerance be kept within ±40 ppm accuracy. This
means that a total offset up to 80 ppm between transmitter and receiver will still result in acceptable
performance. The MKW2xDxxxV transceiver provides on board crystal trim capacitors to assist in
meeting this performance, while the bulk of the crystal load capacitance is external.
Table 13. RF port impedance
Characteristic Symbol Typ Unit
RFIN Pins for internal T/R switch configuration, TX mode
2.360 GHz
2.420 GHz
2.480 GHz
Zin
TBD
RFIN Pins for internal or external T/R switch configuration, RX mode
2.360 GHz
2.420 GHz
2.480 GHz
Zin
TBD
PAO Pins for external T/R switch configuration, TX mode
2.360 GHz
2.420 GHz
2.480 GHz
Zin
TBD