User Manual

MC12311 Development Platform Overview and Description
12311 Development Hardware Reference Manual, Rev. 1
Freescale Semiconductor 2-3
• Based on Freescale’s low-cost MC12311 sub-1GHz wireless node solution with an FSK or OOK
modulation-capable transceiver and low-power QE32 8-bit microcontroller, and a functional set of
MCU peripherals into a 60-pin LGA package
• Reference design area with small footprint, low cost RF node
— Unbalance input/output port
— Flexible RF-Front End for different bands operation
— High Sensitivity: down to -120dBm at 1.2kbps
• 32 MHz reference oscillator
• BDM serial MCU debug port
• Optional secondary 32.768 kHz crystal oscillator for accurate low power timing
• Master reset switch
• Full power regulation and management
• 12311-MRB board provides
— Required circuitry for MC12311 - crystals and RF circuitry
— Local power supply regulation
— Access to all GPIO
— Standalone or daughter card use modes
— BDM connector
2.2.1 TWR-RF Module
The 12311-MRB can run in the Freescale Tower System using the RF-Tower module (TWR-RF). Features
of the TWR-RF module include:
• Standard sockets 100 mils J5 and J4 (2 x 9 and 2 x 10) to connect either a 1323x Modular Reference
Board (1323x-MRB) or a 12311 Modular Reference Board (12311-MRB)
• Standard header 100 mils J1 (2 x 20) to enable signalling path to TWR primary and secondary
connectors.
• Standard header 100 mils J6 (3 x 12) to enable signalling to on board HW and USB interface or to
TWR system Hardware
• On-board regulator to provide external supply
• Four (4) user-controllable LEDs
• Four (4) user push-button switches
• USB Type B connector
Figure 2-2 shows a simplified block diagram of the Freescale Tower RF system.