ADVANCE INFORMATION DATASHEET
MOBILE ACCESS™—CLOCK SYNTHESIZER & TEMPERATURE SENSOR
FOR PORTABLE DEVICES
9TCS1082
IDT®
MOBILE ACCESS™—CLOCK SYNTHESIZER & TEMPERATURE SENSOR FOR PORTABLE DEVICES 1
9TCS1082 REV 0.7 012312
Description
The 9TCS1082 is a highly programmable IC that integrates
clock synthesizers and a temperature sensor for hardware
thermal protection.
The device has an ultra-low-power 32.768 kHz frequency
generator to support Real Time Clocks (RTC). This device
can generate the 32.768 kHz frequency up to four years of
life powered by a CR2032 coin cell battery. The 9TCS1082
can output computer system clock frequencies of 25, 27,
and 48 MHz which will reduce the component count on the
circuit board.
The 9TCS1082 includes temperature monitor function that
measures through external diode. The temperature sensor
is optimized to be accurate within ±1°C between the
temperature range of 60°C to 100°C. This device is highly
programmable through the use of I2C to set high and low
limits for all the temperature channels as well as setting
critical limits. The hardware limits drive dedicated Alert and
Therm pins for system shutdown.
The 9TCS1082 is available in a 32-pin QFN package and is
available for commercial temperature range
Applications
• Notebook Computers
• Netbook Computers
• Smartbook Computers
• Consumer Portable Devices
• Embedded Systems
• Networking Equipment (i.e. Routers, Switches)
• Network Area Storage
Features
Thermal Sensor
• One channel thermal sensor
• Both H/W & S/W programmable over/under temperature
alarms
• No Calibration required in application
• Diode failure detection
• Support SMBUS Alert
• Accuracy: ±1°C (+60°C to +100°C, remote);
±2°C (0°C to + 100°C, remote and local)
• Offset register for system calibration
• Series resistor cancellation feature
System Clock PLL Synthesizers
• Scalable Low Voltage VDD I/O (1.5V to 1.05V) to reduce
power consumption (apply to 25MHz output)
• Integrated series termination resistors
• Selectable – Single-ended 27MHz/48MHz clock output
@ VDD3.3V
• 2 – single ended 25MHz clock outputs (buffer out)
• 32.768 kHz outputs with < 1.8µA power consumption for
system RTC circuit
