Clocking; Figure 2-9. 40 Mhz Xtal (Y1); Figure 2-10. Rework For External Slow Clock Use - Texas Instruments SimpleLink CC3301 User Manual

Hardware

2.4 Clocking

The BP-CC3301 provides two clock inputs to the CC3301 device:
• Y1 is a 40 MHz crystal for fast clock input.
• Y2 is a 32.768 kHz oscillator for slow clock input.
If the user desires to provide their own external slow clock through the Slow Clock Input pin (P2.19), then some
re-work must be performed. The Y2 oscillator needs to be removed, and populate a 0201 sized, 0 ohm resistor
on R29 pad. See Figure 2-10. The slow clock can also be generated internally to save on BOM.
™
14 SimpleLink CC3301 Wi-Fi 6 and Bluetooth
in Module (BP-CC3301)

Figure 2-9. 40 MHz XTAL (Y1)

Figure 2-10. Rework for External Slow Clock Use

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