C8051T606-GM Silicon Laboratories Inc, C8051T606-GM Datasheet - Page 100

• Manufacturer Part Number: C8051T606-GM
• Description: IC 8051 MCU 1.5K-EEPROM 11-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051T60xr

Specifications of C8051T606-GM

• Program Memory Type: OTP
• Program Memory Size: 1.5KB (1.5K x 8)
• Package / Case: 11-QFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 6
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051T6x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: I2C, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 6
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051T606DK
• Minimum Operating Temperature: - 40 C
• Package: 11QFN EP
• Device Core: 8051
• Family Name: C8051T60x
• Maximum Speed: 25 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1668 - CARD DAUGHTER QFN10 SOCKET336-1667 - CARD DAUGHTER MSOP SOCKET336-1666 - KIT DEVELOPMENT FOR C8051T606336-1404 - KIT DEV FOR C8051T60X MCU'S
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1662-5

C8051T600/1/2/3/4/5/6
21. Oscillators and Clock Selection
C8051T600/1/2/3/4/5/6 devices include a programmable internal high-frequency oscillator and an external
oscillator drive circuit. The internal high-frequency oscillator can be enabled/disabled and calibrated using
the OSCICN and OSCICL registers, as shown in Figure 21.1. The system clock can be sourced by the
external oscillator circuit or the internal oscillator (default). The internal oscillator offers a selectable post-
scaling feature, which is initially set to divide the clock by 8.
OSCICL
OSCICN
RC Mode
VDD
EXTCLK
EN
Programmable
n
Internal Clock
Generator
SYSCLK
C Mode
EXTCLK
Input
EXTCLK
OSC
Circuit
CMOS Mode
EXTCLK
OSCXCN
Figure 21.1. Oscillator Options
21.1. System Clock Selection
The CLKSL bit in register OSCICN selects which oscillator source is used as the system clock. CLKSL
must be set to 1 for the system clock to run from the external oscillator; however the external oscillator may
still clock certain peripherals (timers, PCA) when the internal oscillator is selected as the system clock. The
system clock may be switched on-the-fly between the internal oscillator and external oscillator, as long as
the selected clock source is enabled and running.
The internal high-frequency oscillator requires little start-up time and may be selected as the system clock
immediately following the register write, which enables the oscillator. The external RC and C modes also
typically require no startup time.
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Rev. 1.2