C8051T600QDB Silicon Laboratories Inc, C8051T600QDB Datasheet - Page 103

• Manufacturer Part Number: C8051T600QDB
• Description: BOARD SOCKET DAUGHTER QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051T600QDB

• Module/board Type: Socket Module - QFN
• Data Bus Width: 8 bit
• Operating Supply Voltage: + 1.8 V to + 3.6 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051T600DK
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1406

C8051T600/1/2/3/4/5/6
21.3. 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 21.1. 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 21.3).
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 “22.3. Priority Crossbar Decoder” on page 111 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 “22.4. Port I/O Initialization” on page 114 for details on Port
input mode selection.
Rev. 1.2
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