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参数资料
| 型号： | TC1068MQR |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封装： | QSOP-16 |
| 文件页数： | 1/14页 |
| 文件大小： | 76K |
| 代理商： | TC1068MQR |
1
TC1068
TC1068-1 2/8/99
2001 Microchip Technology Inc. DS21352A
SMBus Thermal Sensor with External Diode Input
FEATURES
s
Backward Compliant to Older APM Systems
s
Includes Internal and External Sensing Capability
s
Outputs Temperature As 8-Bit Digital Word
s
Solid State Temperature Sensing; 1
°C Resolution
s
3.0 – 5.5V Operating Range
s
Independent Internal and External Threshold
Set-Points With ALERT#/COMP# Interrupt Output
s
SMBus 2-Wire Serial Interface
s
Up To Nine TC1068s May Share the Same Bus
s
Standby Mode for Low Standby Power
s
Low Power .......................... 70
A (max) Operating
...................................... 10
A (max) Standby Mode
s
16-Pin Plastic QSOP Package
TYPICAL APPLICATIONS
s
Thermal Protection For Intel “Deschutes”
PentiumII and Other High Performance CPUs
with Integrated On-Board Diode — No Sensor
Mounting Problems!
s
Accurate Thermal Sensing From Any Si
Junction Diode
s
Thermal Management in Electronic Systems:
Computers, Network Equipment, Power Supplies
GENERAL DESCRIPTION
The TC1068 is a serially programmable temperature
sensor optimized for monitoring modern high performance
CPUs with on-board integrated thermal diodes. Tempera-
ture data is converted from the CPU’s thermal diode outputs
and made available as an 8-bit digital word.
Communication with the TC1068 is accomplished via
the standard System Management Bus (SMBus) commonly
used in modern computer systems. This permits reading the
current internal/external temperature, programming the
threshold setpoints, and configuring the device. Addition-
ally, an interrupt is generated on the ALERT#/COMP# pin
when temperature moves outside the preset threshold win-
dows in either direction.
A Standby command may be sent via the SMBus or by
signaling the STBY# input pin to activate the low-power
Standby mode. Registers can be accessed while in Standby
mode. Address selection inputs allow up to nine TC1068s to
share the same 2-wire SMBus for multi-zone monitoring.
All registers can be read by the host, and both polled and
interrupt driven systems are easily accommodated. Small
size, low installed cost, and ease of use make the TC1068
an ideal choice for implementing sophisticated system man-
agement schemes, such as ACPI.
ORDERING INFORMATION
Part No.
Package
Temp. Range
TC1068MQR
QSOP-16
–55
°C to +125°C
TCM1617EV
Evaluation Kit Available
BLOCK DIAGRAM
EVALUATION
KIT
AVAILABLE
PIN CONFIGURATION
Register Set
∑
Modulator
Control
Logic
SMBus
Interface
ALERT#/COMP#
STBY#
SCL
SDA
ADD 0
ADD 1
D+
D–
Ext. Temp
Status Byte
Config. Byte
Conv. Rate
Ext. Hi Limit
Ext. Lo Limit
Int. Hi Limit
Int. Lo Limit
Int. Temp
Internal
Sensor
(Diode)
INT_SEL
16-Pin Plastic QSOP
1
16
215
314
413
512
611
710
INT_SEL
D–
89
VDD
NC
GND
SCL
STBY#
NC
SDA
ALERT#/COMP#
ADD0
NC
D+
TC1068
NC
ADD 1
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