User Manual

12311-MRB
12311 Development Hardware Reference Manual, Rev. 1
Freescale Semiconductor 3-7
— The module comes provided with this Y2 crystal and its load capacitors C34 and C35.
— Load capacitors C34 and C35 provide the entire crystal load capacitance
— The 32 kHz oscillator components are supplied, but un-enabled. Zero-ohm resistors R10 and
R11 enable use of IO signals PTB7 and PTB6 via the IO connector
— Use J8 to enable crystal signaling to MCU die from the DIO5 or from the 32kHz crystal.
Figure 3-5. 12311-MRB 32 MHz Reference Oscillator Circuit
Figure 3-6. 12311-MRB 32.768 kHz Optional Oscillator Circuit