C8051T617-GM Silicon Laboratories Inc, C8051T617-GM Datasheet - Page 110
![IC 8051 MCU 16K BYTE-PROG 24-QFN](/photos/12/15/121587/c8051f9xx_24-qfn_sml.jpg)
C8051T617-GM
Manufacturer Part Number
C8051T617-GM
Description
IC 8051 MCU 16K BYTE-PROG 24-QFN
Manufacturer
Silicon Laboratories Inc
Series
C8051T61xr
Specifications of C8051T617-GM
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
21
Program Memory Size
16KB (16K x 8)
Program Memory Type
OTP
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
24-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Other names
336-1438-5
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- Download datasheet (2Mb)
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.
110
Rev 1.0
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