W83L785TS-L/TG-L
W83L785TS-L
Data Sheet Revision History
PAGES
DATES
VERSION
VERSION
ON WEB
MAIN CONTENTS
1
2
3
4
5
6
7
8
n.a.
n.a.
n.a.
n.a.
4/02
11/02
04/06
0.5
1.0
1.1
n.a.
n.a.
1.0
1.1
All the versions before 0.50 are for internal
use.
First publication.
Change version and version on web site to
1.0
Add lead-free package version
Please note that all data and specifications are subject to change without notice. All the trademarks of
products and companies mentioned in this data sheet belong to their respective owners.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where
malfunction of these products can reasonably be expected to result in personal injury. Winbond
customers using or selling these products for use in such applications do so at their own risk and
agree to fully indemnify Winbond for any damages resulting from such improper use or sales.
-I-
Publication Release Date: April, 2006
Revision 1.1
W83L785TS-L/TG-L
Table of Content-
1.
2.
3.
4.
5.
6.
GENERAL DESCRIPTION ......................................................................................................... 1
FEATURES ................................................................................................................................. 1
KEY SPECIFICATIONS .............................................................................................................. 1
PIN CONFIGURATION ............................................................................................................... 1
PIN DESCRIPTION..................................................................................................................... 2
FUNCTIONAL DESCRIPTION.................................................................................................... 3
6.1
General Description ........................................................................................................ 3
6.2
Access Interface ............................................................................................................. 3
6.2.1
The first serial bus access timing is shown as follows: ...................................................3
Temperature measurement machine..............................................................................4
Monitor temperature from thermal diode: .......................................................................4
6.3
Analog Inputs .................................................................................................................. 4
6.3.1
6.3.2
7.
6.4
OFFSET and Temperature Fault Limit (FAULT_LIMIT) Setting..................................... 5
6.5
TEMP_FAULT#............................................................................................................... 6
CONTENT OF DATA REGISTERS ............................................................................................ 7
7.1
Configuration Register
Index 40h............................................................................... 7
7.2
Reserved
Index 41h~4Bh .......................................................................................... 7
7.3
Winbond Vendor ID (Low Byte)
Index 4Ch (Auto Increase) ...................................... 7
7.4
Winbond Vendor ID (High Byte)
Index 4Dh (No Auto Increase)................................ 7
7.5
Chip ID
Index 4Eh ...................................................................................................... 7
7.6
Reserved
Index 4Fh~51h........................................................................................... 8
7.7
Thermal Sensor 1/2 Type Register
Index 52h ........................................................... 8
7.8
Temperature 1 Fault Limit
Index 53h ......................................................................... 8
7.9
Reserved
Index 54h~84h ........................................................................................... 8
7.10 Temperature 1 OFFSET Register
Index 85h ............................................................. 9
VALUE RAM AND LIMIT VALUE................................................................................................ 9
8.1
Value RAM
Index 20h~3Fh........................................................................................ 9
SPECIFICATIONS .................................................................................................................... 10
9.1
Absolute Maximum Ratings .......................................................................................... 10
9.2
DC Characteristics ........................................................................................................ 10
9.3
AC Characteristics ........................................................................................................ 11
HOW TO READ THE TOP MARKING...................................................................................... 12
PACKAGE AND DIMENSIONS ................................................................................................ 13
APPLICATION CIRCUITS ........................................................................................................ 14
8.
9.
10.
11.
12.
- II -
W83L785TS-L/TG-L
1. GENERAL DESCRIPTION
Winbond W83L785TS-L/TG-L, a low-cost, fully integrated temperature sensor, issues an alert signal
when the monitored temperature exceeds the threshold. W83L785TS-L/TG-L provides 1 remote
temperature sensor which could be connected to CPU thermal diode. There is one dedicated
OFFSET/ FAULT_LIMIT
pin to compensate inaccuracy of CPU temperature measurement by
adjusting external two serial resistors and set up temperature fault threshold. When W83L785TS-
L/TG-L begins monitoring, the Watch Dog machine monitors every function and stores the value to
registers. If the monitored value exceeds the limit value, the interrupt status will be set to 1.
W83L785TS-L/TG-L communicates over a two-wire serial interface compatible with SMBus standards.
2. FEATURES
•
•
•
•
•
•
•
Low Cost
1 thermal inputs for remote CPU thermal diode
WATCHDOG comparison of all monitored values
Over temperature protection
I
2
C
TM
serial bus interface
3.3V ± 10％ Supply
8-pin SOP (150mil)
3. KEY SPECIFICATIONS
•
•
•
•
Temperature Range and Accuracy
Supply Voltage 3.3V ± 10％
Operating Supply Current 2 mA typ.
ADC Resolution 8 Bits
- 40°C to +120°C
±
3°C(Max)
4. PIN CONFIGURATION
VDD
CPUT
VREF
OFFSET/FAULT_LIMIT
1
2
3
4
785TS-S
8
7
6
5
SCL
SDA
TEMP_FAULT#
GND
-1-
Publication Release Date: April, 2006
Revision 1.1
W83L785TS-L/TG-L
5. PIN DESCRIPTION
I/O
12t
I/O
12ts
OUT
12
AOUT
OD
12
IN
t
IN
ts
AIN
PIN NAME
- TTL level bi-directional pin with 12 mA source-sink capability,open drain output
- TTL level and schmitt trigger
- Output pin with 12 mA source-sink capability
- Output pin(Analog)
- Open-drain output pin with 12 mA sink capability
- TTL level input pin
- TTL level input pin and schmitt trigger
- Input pin(Analog)
PIN
NO.
TYPE
DESCRIPTION
VDD
CPUT
VREF
OFFSET/
FAULT_LIMIT
GND
TEMP_FAULT#
SDA
SCL
1
2
3
4
5
6
7
8
POWER
AIN
AOUT
VIN
Ground
OD
12
I/OD
12
IN
t s
+3.3 VDD (or 3.3VSB) power supply input.
CPU thermal diode input.
Reference Voltage.
This pin can be used to change CPUT offset value and set up
the temperature_fault limit by adjusting two external serial
resistors.
Ground.
Active-Low output. This pin will be a logic LOW when CPU
temperature exceeds limit.
The signal will be latched until the VSB power loss.
Serial Bus bi-directional Data.
Serial Bus Clock.
-2-
Embedded System
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