C8051T610DK Silicon Laboratories Inc, C8051T610DK Datasheet - Page 110

• Manufacturer Part Number: C8051T610DK
• Description: KIT DEV FOR C8051T61X MCU'S
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051T610DK

• Contents: Board, daughter boards, power adapter, cables, documentation and software
• Processor To Be Evaluated: C8051T61x
• Interface Type: USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: C8051T610
• For Use With: 336-1507 - DAUGHTER BOARD T610 24QFN SOCKET336-1506 - DAUGHTER BOARD T610 28QFN SOCKET336-1505 - DAUGHT BOARD T610 32TQFP SOCKET
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1443

C8051T610/1/2/3/4/5/6/7
20.3. External Oscillator Drive Circuit
The external oscillator circuit may drive an external capacitor or RC network. A CMOS clock may also pro-
vide a clock input. In RC, capacitor, or CMOS clock configuration, the clock source should be wired to the
EXTCLK pin as shown in Figure 20.1. The type of external oscillator must be selected in the OSCXCN reg-
ister, and the frequency control bits (XFCN) must be selected appropriately (see SFR Definition 20.4).
Important Note on External Oscillator Usage: Port pins must be configured when using the external
oscillator circuit. When the external oscillator drive circuit is enabled in capacitor, RC, or CMOS clock
mode, Port pin P0.3 is used as EXTCLK. The Port I/O Crossbar should be configured to skip the Port pin
used by the oscillator circuit; see Section “21.3. Priority Crossbar Decoder” on page 117 for Crossbar con-
figuration. Additionally, when using the external oscillator circuit in capacitor or RC mode, the associated
Port pin should be configured as an analog input. In CMOS clock mode, the associated pin should be
configured as a digital input. See Section “21.4. Port I/O Initialization” on page 121 for details on Port
input mode selection.
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