W83L786NR
W83L786NG
Nuvoton
H/W Monitoring IC
W83L786NR/ W83L786NG
W83L786NR
Data Sheet Revision History
PAGES
DATES
VERSION
VERSION
ON WEB
MAIN CONTENTS
Pin 10: from Vram_SEN to VTIN1
Pin 11: from Vcore_SEN to D1
P.13
10/15/04
0.6
N/A
Pin 13: from Vref to Vcore_SEN
Pin 14: from D- to Vram_SEN
Pin 15: from D1+ to Vref
2
P.14, P.18,
P.51, P.55
11/15/04
0.7
N/A
Add pin function description, functional
description, electrical characteristics
and top marking explanation
3
P.1, P.3,
P.5, P.9
07/04/05
0.8
N/A
Correct temp. sensor measurement
method
4
N.A.
03/31/06
0.9
N/A
Add Pb-free package version; remove
application circuit
5
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. Nuvoton
customers using or selling these products for use in such applications do so at their own risk and
agree to fully indemnify Nuvoton for any damages resulting from such improper use or sales.
-I-
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
Table of Contents1.
GENERAL DESCRIPTION ......................................................................................................... 1
2.
FEATURES ................................................................................................................................. 2
2.1
Monitoring Items .............................................................................................................. 2
2.1.1
Temperature.....................................................................................................................2
2.1.2
Voltage .............................................................................................................................2
2.1.3
Fan ...................................................................................................................................2
2.2
Actions Enabling .............................................................................................................. 2
2.3
General ............................................................................................................................ 2
2.4
Package ........................................................................................................................... 2
3.
KEY SPECIFICATIONS .............................................................................................................. 3
4.
BLOCK DIAGRAM ...................................................................................................................... 3
5.
PIN CONFIGURATION ............................................................................................................... 4
6.
PIN DESCRIPTION..................................................................................................................... 5
7.
FUNCTIONAL DESCRIPTION.................................................................................................... 8
7.1
General Description ......................................................................................................... 8
7.2
Access Interface .............................................................................................................. 8
7.3
The First Serial Bus Access Timing................................................................................. 8
7.4
Analog Inputs ................................................................................................................... 9
7.5
7.6
7.7
8.
7.4.1
Voltage Input can not be over 2.048V ............................................................................10
7.4.2
Voltage Fault (VOLTAGE_FAULT #)..............................................................................10
Temperature Measurement Machine............................................................................. 10
7.5.1
Monitor Temperature from Thermistor............................................................................11
7.5.2
Monitor Temperature from Thermal Diode .....................................................................11
7.5.3
Temperature Fault (TEMP_FAULT #) ............................................................................12
FAN Speed Count and FAN Speed Control .................................................................. 12
7.6.1
Fan Speed Count ...........................................................................................................12
7.6.2
Fan Speed Control .........................................................................................................14
7.6.3
SMART FANTM I Control ...............................................................................................16
7.6.4
SMART FANTM II Control ..............................................................................................17
7.6.5
Fan Fault (FAN_FAULT #) .............................................................................................19
Fault Signal—INT#......................................................................................................... 19
7.7.1
Temperature...................................................................................................................19
7.7.2
Voltage ...........................................................................................................................21
7.7.3
Fan .................................................................................................................................21
CONTROL AND STATUS REGISTER ..................................................................................... 22
- II -
W83L786NR/ W83L786NG
8.1
Configuration Register - Index 40h ................................................................................ 22
8.2
INT# Status Register 1 - Index 41h ............................................................................... 22
8.3
INT# Status Register 2 - Index 42h ............................................................................... 22
8.4
INT# Mask Register 1 - Index 43h ................................................................................. 23
8.5
INT# Mask Register 2 - Index 44h ................................................................................. 23
8.6
Register - Index 45h....................................................................................................... 23
8.7
Register - Index 46h....................................................................................................... 24
8.8
GPIO/GPO Function Enable Control Register - Index 47h............................................ 24
8.9
Register - Index 48h....................................................................................................... 24
8.10
GPIO1-2 & 5-7 I/O Mode Control Register - Index 49h ................................................. 24
8.11
GPO3-4 Output Data Register - Index 4Ah ................................................................... 25
8.12
GPIO1-2 & 5-7 Data Register - Index 4Bh..................................................................... 26
8.13
Nuvoton Vendor ID (Low Byte) - Index 4Ch .................................................................. 26
8.14
Nuvoton Vendor ID (High Byte) - Index 4Dh.................................................................. 26
8.15
Chip ID - Index 4Eh........................................................................................................ 26
8.16
Register - Index 4Fh ...................................................................................................... 27
8.17
Register - Index 50h....................................................................................................... 27
8.18
GPIO1-2 & 5-7 Output Mode Control Register - Index 51h ........................................... 27
8.19
INT# Property Select - Index 52h .................................................................................. 28
8.20
Thermal Sensor 1/2 Type Register - Index 53h............................................................. 28
8.21
Fan Divisor Register - Index 54h ................................................................................... 28
8.22
Reserved - Index 55h ~ 5Fh .......................................................................................... 29
8.23
FAN Configuration Register - Index 80h........................................................................ 30
8.24
DC FAN1 Output Voltage Level Control Register (Manual Mode) / FAN1 Output Voltage
Table (SMART FANTM II Mode) – Index 81h ................................................................. 30
8.25
FAN1 Output Voltage Table (SMART FANTM II Mode) - Index 82h............................. 31
8.26
TEMP0 (D+_D-) Target Temperature Register (Thermal Cruise Mode) / TEMP_POINT1
for FAN1 (SMART FANTM II Mode) - Index 83h............................................................. 31
8.27
TEMP_POINT2 for FAN1 (SMART FANTM II Mode) - Index 84h................................. 31
8.28
FAN 1 Speed Low Limit Rate Control Register (Thermal Cruise Mode) /
TEMP_POINT3 for FAN1 (SMART FANTM II Mode) - Index 85h................................... 32
8.29
TEMP_POINT4 for FAN1 (SMART FANTM II Mode) - Index 86h................................. 32
8.30
DC FAN2 Output Voltage Level Control Register (Manual Mode)/ FAN2 Output Voltage
Table (SMART FANTM II Mode) - 87h ............................................................................ 32
8.31
FAN2 Output Voltage Table (SMART FANTM II Mode) - Index 88h............................. 33
8.32
TEMP1 (VTIN1) Target Temperature Register (Thermal Cruise Mode) /
TEMP_POINT1 for FAN2 (SMART FANTM II Mode) - Index 89h................................... 33
- III -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
9.
8.33
TEMP_POINT2 for FAN2 (SMART FANTM II Mode) - Index 8Ah ................................ 33
8.34
FAN 2 Speed Low Limit Rate Control Register/ TEMP_POINT3 for FAN2 SMART
FANTM II Mode) - Index 8Bh........................................................................................... 34
8.35
TEMP_POINT4 for FAN2 (SMART FANTM II Mode) - Index 8Ch ................................ 34
8.36
Tolerance of Temperature Register - Index 8Dh ........................................................... 34
8.37
FAN 2D/3D state Control Register - Index 8Eh ............................................................. 35
8.38
FAN Pre-Scale Register - Index 8Fh ............................................................................. 35
8.39
FAN Initial Output Value – Index90h ............................................................................. 36
8.40
Fan Step down Time Register - Index 91h .................................................................... 36
8.41
Fan Step up Time Register - Index 92h......................................................................... 36
8.42
Temperature Sensor 0 (D+_D-) Offset Register - Index 93h......................................... 37
8.43
Temperature Sensor 1 (VTIN1) Offset Register – Index 94h ........................................ 37
8.44
Register - Index 95h....................................................................................................... 37
8.45
Register - Index 96h....................................................................................................... 38
8.46
Register - Index 97h....................................................................................................... 38
8.47
Value RAM - Index 20h- 3Fh or 60h - 7Fh..................................................................... 38
ELECTRICAL CHARACTERISTICS......................................................................................... 40
9.1
Absolute Maximum Ratings ........................................................................................... 40
9.2
DC Characteristics ......................................................................................................... 40
9.3
AC Characteristics ......................................................................................................... 42
9.3.1
Serial Bus Timing Diagram.............................................................................................42
9.3.2
VID Input Skew...............................................................................................................42
10.
THE TOP MARKING................................................................................................................. 43
11.
PACKAGE SPECIFICATION .................................................................................................... 44
- IV -
W83L786NR/ W83L786NG
1. GENERAL DESCRIPTION
W83L786NR/NG is an evolving product of W83L785R -- Nuvoton's most popular hardware monitoring
IC, and intelligent fan controlling IC. Specifically designed for the graphic cards and barebone /mini
systems, W83L786NR/NG can be used to monitor several critical hardware parameters of the system,
including voltages, fan speeds, and temperatures, which are very important for the system to work
stably and properly.
W83L786NR/NG can monitor up to 3 analog voltage inputs, 2 fan tachometer inputs, and 2 remote
temperature sensors. One of the temperature inputs is connected to CPU/GPU thermal diode sensor,
and the other remote temperature sensor could be performed by either thermal diode or thermistor.
Power-on fan_set configuration offers the function to choose one of the four duty cycles, 100%, 81%,
62%, 43%, as initial fan speed. 2 sets of PWM (Pulse Width Modulation) / DC (Direct Current) fan
TM
TM
TM
output for SMART FAN control – “Thermal Cruise ” mode and “SMART FAN II “mode. Under
TM
“Thermal Cruise “mode, temperatures of GPU and the system can be maintained within specific
programmable ranges under the hardware control. Under “SMART FANTM II” mode, the fan could be
operated at the lowest possible speed for minimum acoustic noise, and the dynamic intelligent fan
management could create the most quiet system environment and stable working performance. An 8bit analog-to-digital converter (ADC) is built inside W83L786NR/NG. As for warning mechanism,
W83L786NR/NG provides four pure hardware event pins for independent warning signals:
VOLTAGE_FAULT#, FAN_FAULT#, TEMP_FAULT#, and INT#. All threshold values could be set for
system protection without any timing delay. One bit power-on address selection is used to decide the
address of the W83L786NR/NG over I2C serial bus interface. W83L786NR/NG also provides up to 7
optional multifunctional GPIO. W83L786NR/NG is powered by 3.3V.
Through the application software or BIOS, the users can read all the monitored parameters of system
from time to time. A pop-up warning can also be activated when the monitored item is out of the
proper / preset range. The application software could be Nuvoton's Hardware DoctorTM, IntelTM LDCM
(LanDesk Client Management), or other management application software. Also the users can set up
the upper and lower limits (alarm thresholds) of these monitored parameters and activate one
programmable interrupts. For the spacing saving consideration of the Graphic cards and Notebook
system, W83L786NR/NG is 20-pin SSOP package.
-1-
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
2. FEATURES
2.1
2.1.1
2.1.2
2.1.3
2.2
Monitoring Items
Temperature
Measure the temperature with high accuracy.
One thermal diode sensor (current mode) connected to CPU/GPU and one remote
sensor either by thermal diode (current mode) or thermistor.
Programmable hysteresis and setting points (alarm thresholds) for all monitored
items.
Voltage
3 voltage sensor inputs.
--- Typically for Vcore, RAM, etc.
Fan
3D/2D application being used and transferring fan set to the most appropriate fan
speed control.
Fan set: power on configuration for fan speed at four rotation rate levels at 43%, 62%,
81%, and 100% duty cycle.
Two DC/PWM fan output control.
SMART FANTM function compliant.
Actions Enabling
2.3
General
2.4
Total up to 2 sets of fan speed monitoring and controlling.
Issue FAN_FAULT#, VOLTAGE_FAULT#, TEMP_FAULT#, and INT# signals to
activate system protection.
Warning signal pop-up in application software.
Interface: I²C / SMBus control.
1 bit I2C address selection.
Up to 7 GPIOs.
Nuvoton hardware monitoring application software (Hardware DoctorTM) support
Windows 95 / 98 / 2000 / XP and Windows NT 4.0 / 5.0.
3.3V VCC operation.
Package
20-pin SSOP (209mil).
-2-
W83L786NR/ W83L786NG
3. KEY SPECIFICATIONS
±3% (typ.)
0°C to +160°C; ± 3°C (max.)
3.3V±10%
2 mA (typ.)
10 uA (typ.)
8 Bits
Voltage monitoring accuracy
Monitoring temperature range and accuracy
Supply voltage
Operating supply current
Power down supply current
ADC resolution
4. BLOCK DIAGRAM
V c o re
DDR RAM OR
O T H E R D E V IC E
POW ER
PW M
GPU
D -
R e m o te
T h e r m is t o r
D +
V T IN 1
G P U D IO D E
SENSOR
VREF
THERM AL
SENSOR
G P IO
G P IO
C O N T R O L L O G IC &
R E G IS T E R
IN T #
FAN _FAU LT#
F a u lt D e t e c t o r
VO LTAG E_FAU LT#
TEM P_FAU LT#
I2 C
FAN
CONTROL
FAN _SET
( IN IO U T _ G P O )
VO LTAG E
SENSOR
V CC
F A N IN 1
GND
F A N IN 2
SDA
V c o re _ S E N
SCL
ADDR
V RAM _S E N
FANOUT1
FAN 1
FANOUT2
FAN 2
-3-
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
5. PIN CONFIGURATION
1
20
VOLTAGE_FAULT#/GPIO7
TEMP_FAULT#/GPIO2
2
19
INT#
SCL
3
18
PWM/DC_OUT2/GPIO6
SDA
4
17
PWM/DC_OUT1
Vcc
5
16
GND
ADDR/GPO3
6
15
VREF
FAN_SET/GPO4
7
14
VRAM_SEN
FANIN1
8
13
VCORE_SEN
FANIN2/GPIO5
9
12
D+
VTIN1
10
11
D-
W83L786NR
FAN_FAULT/GPIO1
-4-
W83L786NR/ W83L786NG
6.
PIN DESCRIPTION
PIN TYPE
PIN ATTRIBUTE
I/O12t
TTL level bi-directional pin with 12 mA source-sink capability
I/O12ts
TTL level and schmitt trigger with 12 mA source-sink capability
I/O8ts
TTL level and schmitt trigger with 8 mA source-sink capability
I/O6ts
TTL level and schmitt trigger with 6 mA source-sink capability
I/OD12ts
TTL level and schmitt trigger open drain output with 12 mA sink capability
OUT12
Output pin with 12 mA source-sink capability
OD12
Open-drain output pin with 12 mA sink capability
AOUT
Output pin (Analog)
INt
TTL level input pin
INts
TTL level input pin and schmitt trigger
AIN
Input pin(Analog)
PIN NAME
NO
FAN_FAULT#
PIN TYPE
OD12
DESCRIPTION
Active-Low output. This pin will be a logic LOW when the
fan1 or fan2 is abnormally stopped. (Default)
1
General purpose I/O function.
GPIO1
I/OD12TS
This multi-functional pin is programmable.
Active-Low output. This pin will be a logic LOW when the
TEMP_FAULT#
OD12
2
GPIO2
temperature of the system or CPU exceeds its limit.
(Default)
I/OD12TS
SCL
3
INt s
SDA
4
I/OD12
Vcc
5
POWER
General purpose I/O function.
This multi-functional pin is programmable.
Digital Input. SMBus serial clock input. Requires SMBus
pull-up.
Digital I/O (Open drain). SMBus bidirectional serial data.
Requires SMBus pull-up.
Power supply input.
-5-
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
Continued
PIN NAME
NO
PIN TYPE
6
INTS/OUT12
ADDR
DESCRIPTION
Determines the SMBus device address.
GPO3
General purpose Output function.
This multi-functional pin is programmable.
Determines the FAN initial speed. Power on configuration
FAN_SET
AIN
7
GPO4
FANIN1
OUT12
8
FANIN2
for fan speed at four rotation rate levels at 43%, 62%, 81%,
and 100%.
General purpose Output function.
This multi-functional pin is programmable.
INTS
0V to +3.3V amplitude fan tachometer input. (Default)
INTS
0V to +3.3V amplitude fan tachometer input. (Default)
9
GPIO5
OUT12TS
General purpose I/O function.
This multi-functional pin is programmable.
Analog Input. Connect to either diode sensor (current
VTIN1
10
AIN
mode) or thermistor.
Anode to VTIN1 if VTIN1 is connected to diode sensor
(current mode).
D-
11
AIN
Thermistor 2 terminal input (Default) /
Cathode to CPU Thermal Diode.
Also cathode to VTIN1 if VTIN1 is connected to diode
sensor (current mode).
Please connect this pin to the ground, see page 15,
figure 5.
D+
12
AIN
Thermistor 1 terminal input (Default) /
Anode to CPU Thermal Diode.
V CORE _SEN
13
AIN
Analog Input. Monitors CPU core voltage (0V-3V).
V RAM _SEN
14
AIN
Analog Input. Monitors RAM’s voltage.
VREF
15
AOUT
Reference voltage.
-6-
W83L786NR/ W83L786NG
Continued
PIN NAME
NO
PIN TYPE
GND
16
GROUND
PWM / DC OUT1
17
OD12
PWM / DC OUT2
OD12
DESCRIPTION
Ground pin for the W83L786NR
Fan speed control output. This pin is default DC output
level. It can be programmed as PWM output.
Fan speed control output. This pin is default DC output
level. It can be programmed as PWM output.
18
GPIO6
INT#
I/OD12TS
19
VOLTAGE_FAULT#
OD12
OD12
General purpose I/O function.
This multi-functional pin is programmable.
System Interrupt.
Active-Low output. This pin will be a logic LOW when the
voltage exceeds its high/low limit. (Default)
20
GPIO7
I/OD12TS
General purpose I/O function.
This multi-functional pin is programmable..
-7-
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
7. FUNCTIONAL DESCRIPTION
7.1
General Description
The W83L786NR/NG provides 3 analog voltage inputs, 2 fan speed inputs and outputs which support
both PWM (Pulse Width Modulation) fan control and DC (Direct Current) fan control, all of them being
implemented with SMART FANTM I and SMART FANTM II, and 2 sets of thermal inputs for CPU/GPU
thermal diode sensor or remote temperature sensor. W83L786NR/NG is I2C / SMBus interface
compatible. Furthermore, the Watch Dog Timer will monitor every function and store the values to
registers for comparison with preset ranges. If the monitored value exceeds the limit value, the
interrupt status will be set to 1 and W83L786NR/NG will issue interrupt signals such as INT# and IRQ
if not masked. W83L786NR/NG also provides software and hardware Watch Dog Timer to avoid
system hang on.
7.2
Access Interface
The W83L786NR/NG provides I2C Serial Bus for microprocessor to read/write internal registers, and
the I2C address default value is 01011110b (Pin 6 pull high). If Pin 6 pulls low, the I2C address value is
01011100b.
7.3
The First Serial Bus Access Timing
(a) Serial bus writes to internal address register followed by the data byte
0
7
8
0
7
8
SCL
0
SDA
Start By
Master
1
0
1
1
0
1
R/W
D7
D6
Ack
by
792D
Frame 1
Serial Bus Address Byte
D5
D4
D3
D2
D1
D0
Ack
by
792D
Frame 2
Internal Index Register Byte
0
7
8
SCL (Continued)
SDA (Continued)
D7
D6
D5
D4
D3
D2
D1
D0
Ack
by
792D
784R
Frame 3
Data Byte
Figure 1. Serial Bus Write to Internal Address Register followed by the Data Byte
-8-
Stop
by
Master
W83L786NR/ W83L786NG
(b) Serial bus read from a register
0
7
8
0
7
8
SCL
0
SDA
1
0
Start By
Master
1
1
0
1
R/W
D7
D6
Ack
by
792D
Frame 1
Serial Bus Address Byte
D5
D4
D3
D2
D1
D0
Ack
by
792D
Frame 2
Internal Index Register Byte
0
0
7
0
1
0
1
1
0
1
0
R/W
7
D7
Ack
by
792D
Frame 3
Serial Bus Address Byte
Repeat
start
by
Master
8
D6
D5
D4
D3
D2
D1
8
D0
Nak
by
Master
Frame 4
Data Byte
Stop by
Master
0
Figure 2. Serial Bus Read from Internal Address Register
7.4
Analog Inputs
The maximum input voltage of the analog pin is 2.048V because the 8-bit ADC has the 8mV LSB.
Actually, the application of the voltage monitoring would most often be connected to power suppliers.
The input voltage lower than 2.048V could directly connect to the analog inputs. The inputs voltage
higher than 2.048V should be reduced by external resistors so as to meet the input range. This is
shown in Figure 3.
VCORE(M ax2.048V)
Pin 13
Positive Inputs
R1
VRAM (M ax2.048V)
+2.5V
Pin 14
100K, 1%
R2
100K, 1%
10K, 1%
Typical Therm ister
Connection
VREF
8-bit ADC
with
8mV LSB
Pin 15
VTIN1
Pin 10
R THM
**The connections of D+
is same as VTIN1
10K, 25 C
Figure 3
-9-
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
7.4.1
Voltage Input can not be over 2.048V
The input voltage Vcore, and Vram can be expressed as following equation:
VRAM = V+ 2.5V ×
R2
R1 + R2
. V+2.5V is +2.5V inputs.
The value of R1 and R2 can be selected to 100K Ohms and 100K Ohms, respectively, when the input
voltage is 2.5V. The node voltage of VRAM can be subject to less than 2.048V for the maximum input
range of the 8-bit ADC. The pin 5 is connected to the power supply VCC with +3.3V. There are two
functions in this pin with 3.3V: the first function is to supply internal analog power of the
W83L786NR/NG and the second function is to connect this pin to internal serial resistors to monitor
the +3.3V voltage. The values of two serial resistors are 20K ohms and 40K ohms so that input
voltage to ADC is 1.1V which is less than 2.048V of ADC maximum input voltage. The express
equation can represent as follows.
Vin = VCC ×
20 KΩ
≅ 1.1V
20 KΩ + 40 KΩ
where VCC is set to 3.3V.
7.4.2
Voltage Fault (VOLTAGE_FAULT #)
W83L786NR/NG provides a good protection for voltage. Set Pin 20 (VOLTAGE_FAULT#) to monitor
voltage. When Vcore (Pin13), Vram (Pin14), or VCC (Pin5) voltage exceeds high or low voltage limit in
VR2B ~ VR34, Pin 20 VOLTAGE_FAULT# will be asserted (Figure 4).
V o lta g e H ig h lim it
V o lta g e L o w lim it
VOLTAGE_FAULT#
F ig u re 4 . V o lta g e F au lt
7.5
Temperature Measurement Machine
- 10 -
W83L786NR/ W83L786NG
The temperature data format is 8-bit unsigned for thermal sensor. The 8-bit temperature data can be
obtained by reading the VR [25h] or VR [26h]. The format of the temperature data is shown in Table 1.
TEMPERATURE
8-BIT DIGITAL OUTPUT
8-BIT BINARY
8-BIT HEX
+160°C
1010,0000
A0h
+25°C
0001,1001
19h
+2°C
0000,0010
02h
+1°C
0000,0001
01h
+0°C
0000,0000
00h
Table 1
7.5.1
Monitor Temperature from Thermistor
The W83L786NR/NG can connect one thermistor and one thermal diode sensor to measure two
different environment temperatures. The specification of thermistor should be considered to (1) β
value is 3435 K, and (2) resistor value is 10K ohms at 25°C. In the Figure 3, the themistor is
connected by a serial resistor with 10K Ohms, and then connect to VREF (pin 15).
7.5.2
Monitor Temperature from Thermal Diode
The W83L786NR/NG can alternate the thermistor to thermal diode interface and the circuit connection
is shown as Figure 5. The pin of D- is connected to power supply ground (GND) and the pin D+ is
connected to pin D+ or VTIN1 in the W83L786NR/NG. The bypass capacitor C=2200pF should be
added to filter the high frequency noise.
CPU or G PU
D+
D+
T h e r m in a l
D io d e
C=2200pF
D-
D-
W 83L 786N R
B ip o la r T r a n s is to r
T e m p e r a tu r e s e n s o r
V T IN 1
C=2200pF
2N 3904
Figure 5
- 11 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
7.5.3
Temperature Fault (TEMP_FAULT #)
W83L786NR/NG provides a good protection for temperature fault. Set Pin 2 (TEMP_FAULT#) to
monitor temperature. When D+-D- (Pin12, 11), or VTIN1 (Pin10) temperature exceeds temperature
fault limit in VR35 or VR37, Pin 2 TEMP_FAULT# will be asserted (Figure 6).
TEM P_FA U LT
lim it
TEM P_FA U LT#
F ig u re 6 . T E M P _ F A U L T
7.6
7.6.1
FAN Speed Count and FAN Speed Control
Fan Speed Count
Inputs are provided by the signals from fans equipped with tachometer outputs. The level of these
signals should be set to TTL level, and maximum input voltage cannot be over VCC. If the input signals
from the tachometer outputs are over the VCC, the external trimming circuit should be added to reduce
the voltage to obtain the input specification. The normal circuit and trimming circuits are shown in
Figure 7.
Determine the fan counter according to:
Count =
135
. × 106
RPM × Divisor
In other words, the fan speed counter has been read from register VR28 or VR29, and the fan speed
can be evaluated by the following equation.
135
. × 10 6
RPM =
Count × Divisor
The default divisor is 2 and defined at CR54.bit0~2, bit4~6 which are three bits for divisor. That
provides very low speed fan counter such as power supply fan. Table 2 is an example for the relation
of divisor, RPM, and count.
DIVISOR
NOMINAL RPM
COUNTS
TIME PER
- 12 -
70% RPM
TIME FOR 70%
W83L786NR/ W83L786NG
REVOLUTION
1
8800
6.82 ms
153
6160
9.74 ms
2 (default)
4400
13.64 ms
153
3080
19.48 ms
4
2200
27.27 ms
153
1540
38.96 ms
8
1100
54.54 ms
153
770
77.92 ms
16
550
109.08 ms
153
385
155.84 ms
32
275
218.16 ms
153
192
311.68 ms
64
137
436.32 ms
153
96
623.36 ms
128
68
872.64 ms
153
48
1246.72 ms
Table 2
+12V
+12V
Pull-up resister
4.7K Ohms
Pull-up resister < 1K
or totem-pole output
+12V
+12V
22K~30K
Fan Input
FAN Out
> 1K
Pin 8
Pin 9
Fan Input
FAN Out
Pin 8
Pin 9
GND
GND
10K
W83L786NR
3.3V Zener
W83L786NR
FAN
Connector
Figure 7-2. Fan with Tach Pull-Up to +12V, or
Totem-Pole Putput and Zener Clamp
Figure 7-1. Fan with Tach Pull-Up to +12V, or Totern-Pole
Output and Register Attenuator
+5V
+5V
Pull-up resister
4.7K Ohms
Pull-up resister < 1K
or totem-pole output
+5V
+5V
1K~2.7K
FAN Out
Fan Input
> 1K
Pin 8
Pin 9
Fan Input
FAN Out
Pin 8
Pin 9
GND
GND
10K
W83L786NR
3.3V Zener
W83L786NR
FAN
Connector
Figure 7-4. Fan with Tach Pull-Up to +5V, or
Totem-Pole Putput and Zener Clamp
Figure 7-3. Fan with Tach Pull-Up to +5V, or Totern-Pole
Output and Register Attenuator
- 13 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
7.6.2
Fan Speed Control
The W83L786NR/NG provides two sets for PWM/DC fan speed control. The duty cycle of PWM or the
output voltage of DC can be programmed by a 4-bit register. There are four mode to control fan speed
which are set by programming CR80 [3:2] and CR [5:4], and default are FAN_SET mode.
7.6.2.1. Default Fan Speed Setting
There is a pin to set the default value for fan speed control by adjusting external serial resistors. After
power up, the default value will be stored in CR90 (FAN_SET mode). The figure and table are shown
below.
V C C
R a
F A N _ S E T
R b
SECTION
FAN SPEED RATE
RA
RB
3
100﹪
9.1K
×
2
81﹪
4.7K
9.1K
1
62﹪
9.1K
4.7K
0
43﹪
×
9.1K
Figure 8 OFFSET Setting
7.6.2.2. PWM Mode
Duty − cycle(%) =
Programmed 4 - bit Register Value
×100%
16
- 14 -
W83L786NR/ W83L786NG
+5V
+12V
R1
R1
R2
R2
PNP Transistor
D
G
PWM Clock Input
PNP Transis
D
G
PWM Clock Input
NMOS
S
+
C
NMOS
S
+
C
FAN
FAN
-
-
Figure 9
7.6.2.3. DC Mode
W83L786NR/NG has a 4-bit DAC, which produces 0 to 3.3 voltages DC output that provides
maximum 2 sets for fan speed control. The analog output can be programmed in the CR 81, and CR
87 (manual mode). The expression of output voltage can be represented as follows,
OUTPUT Voltage = VCC ×
Programmed 4 - bit Register Value
16
The application circuit is shown as follows,
IO+12V
IO+12V
Q1
NPN
R1
3
FANOUT
0
C1
2
4
+
LM358
1
-
Tachometer ou
0.1U
3
2
1
11
IO-12V
R3
FAN
R4
47K
33K
Figure 10
Be careful when choosing the OP-AMP and the transistor. The OP-AMP is used for amplify the 5V
range of the DC output up to 12V. The transistor should has a suitable
β value to avoid its base
current pulling down the OP-AMP ’s output and gain the common current to operate the fan at fully
speed. (For more cost and effort efficient solution please refer to W83391TS/QS – the DC fan predriver that could provide up to 24V gate voltage for external N-channel MOSFET driving)
- 15 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
7.6.3
SMART FANTM I Control
W83L786NR/NG supports two sets SMART FANTM I function and mapping to D+,D- (PWM/DC_OUT1),
VTIN1 (PWM/DC_OUT2) . If CR80 [3:2] or CR80 [5:4] set to 2’b10, Fan1 or Fan2 will enable SMART
FANTM I function.
At this mode, W83L786NR/NG provides the SMART FANTM system to automatically control fan speed to
keep the temperatures of CPU and the system within specific range. At first a wanted temperature and
interval must be set (ex. 55 °C ± 3 °C) by BIOS and the fan speed will be lowered as long as the
current temperature remains below the setting value. Once the temperature exceeds the high limit
(58°C), the fan will be turned on with a specific speed set by BIOS (ex: 80% duty cycle) and
automatically controlled its PWM duty cycle with the temperature varying. Three conditions may occur:
(1) If the temperature still exceeds the high limit (ex: 58°C), PWM duty cycle will increase slowly. If the
fan has been operating in its full speed but the temperature still exceeds the high limit (ex: 58°C),
a warning message will be issued to protect the system.
(2) If the temperature goes below the high limit (ex: 58°C), but still above the low limit (ex: 52°C), the
fan speed will be fixed at the current speed because the temperature is in the target range (ex: 52
°C ~ 58°C).
(3) If the temperature goes below the low limit (ex: 52°C), PWM duty cycle will decrease slowly to 0 or
a preset stop value until the temperature exceeds the low limit.
Figure 11-1, 11-2 gives an illustration of Thermal Cruise Mode.
A
B
C
58`C
55`C
52`C
PWM
Duty
Cycle
100
Fan Start = 20%
50
0
Figure 11-1
- 16 -
D
W83L786NR/ W83L786NG
A
B
C
D
58`C
55`C
52`C
Fan Start = 20%
PWM 100 Fan Start = 20%
Duty
Cycle 50
Fan Stop = 10%
0
Figure 11-2
Of course, SMART FANTM control system can be disabled and the fan speed control algorithm can be
programmed by BIOS or application software.
7.6.4
SMART FANTM II Control
W83786NR/NG provides 4 temperature points each can automatically control PWM or DC fan mode.
Each temperature maps
ps different fan out level, the relationship is shown as follows:
Fan Duty Cycle
Temp. Tolerance
Fan Duty Cycle 100%
Fan Duty Cycle Level 3
Fan Duty Cycle Level 2
Fan Duty Cycle Level 1
Non-Stop Duty Cycle
Temp. 1
Temp.2
Temp.3
Temp.4
Temperature
Figure 12 SMART FANTM II
behaviors
- 17 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
The SMART FANTM II, a new innovation of Nuvoton, is specifically designed to operate fans at the
lowest possible speed so as to minimize acoustic noise. As the figure shown above, it is clear that
SMART FANTM II describes a relationship between Fan PWM Duty Cycle/DC Level and temperature.
Users can program CR [80h] to enable SMART FANTM II mode. SMART FANTM II registers allow users to
define suitable fan output levels to improve acoustic noise, power consumption and reliability issues
regarding to specific fan.
Each fan has 4 duty cycle registers and 4 temperature point registers to setup the relation between fan
output and temperature. Tolerance registers CR [8Dh] is used to postpone the response of fan output
and avoid fan output throttles at each temperature point because fan throttling might produce some
undesired noise.
TM
The mechanism of SMART FAN
II is described as follows:
(1) At first, the fan speed operates at Non-Stop Duty Cycle, and keeps constant while temperature
rises. When rising temperature hits critical Temp.1, fan speed remains unchanged. If the
temperature keeps on rising and finally hits the upper edge of Temp. Tolerance of Temp.1, it
triggers the fan speed change mechanism and fan speed jumps from Non-Stop Duty Cycle to Fan
Duty Cycle Level 1.
(2) Fan speed remains constant at Fan Duty Cycle Level 1 even though the monitored temperature
hits Temp.2.
(3) Fan speed will directly jump from Fan Duty Cycle Level 1 to Fan Duty Cycle Level 2 while the
monitored temperature hits the upper edge of Temp. Tolerance of Temp.2.
(4) Same mechanism happens between Temp.3 and Temp.4.
(5) If the monitored temperature between Temp.3 and Temp.4, for example, begins to fall, the fan will
keep its speed at Fan Duty Cycle Level 3, which is a constant.
(6) If the monitored temperature keeps on falling, the fan speed still remains the same unless the
temperature hits the lower edge of Temp. Tolerance of Temp.3.
(7) Once the monitored temperature hits the lower edge of Temp. Tolerance of Temp.3, the fan speed
reduces directly from Fan Duty Cycle Level 3 to Fan Duty Cycle Level 2, and keeps the same
speed until the temperature hits the next lower edge of Temp. Tolerance.
- 18 -
W83L786NR/ W83L786NG
REGISTER
D+, D- – FAN1
Non-Stop Duty Cycle
Duty Level 1
Duty Level 2
Duty Level 3
Temp Point 1
Temp Point 2
Temp Point 3
Temp Point 4
Tolerance
7.6.5
CR[81h] b3:b0
CR[81h] b7:b4
CR[82h] b3:b0
CR[82h] b7:b4
CR[83h] b7:b0
CR[84h] b7:b0
CR[85h] b7:b0
CR[86h] b7:b0
CR[8Dh] b3:b0
VTIN1 – FAN2
CR[87h] b3:b0
CR[87h] b7:b4
CR[88h] b3:b0
CR[88h] b7:b4
CR[89h] b7:b0
CR[8Ah] b7:b0
CR[8Bh] b7:b0
CR[8Ch] b7:b0
CR[8Dh] b7:b4
Fan Fault (FAN_FAULT #)
W83L786NR/NG provides a good protection for fan speed. Set Pin 1 (FAN_FAULT#) to monitor fan
speed. When FANIN1 (Pin8) or FANIN2 (Pin9) exceeds fan count high limit in VR3B or VR3C. Pin1
FAN_FAULT# will be asserted (Figure 13).
F a n c o u n t lim it
FA N _FA U LT #
F ig u re 1 3 . F A N _ F A U L T
7.7
7.7.1
Fault Signal—INT#
Temperature
Pin INT# for temperature has 3 modes.
7.7.1.1. Comparator Interrupt Mode
Temperature exceeding TO causes an interrupt and this interrupt will be reset when reading all of the
Interrupt Status Registers. Once an interrupt event has occurred by exceeding TO, then reset, if the
temperature remains above the THYST, the interrupt will occur again when the next conversion has
completed. If an interrupt event has occurred by exceeding TO and not reset, the interrupts will not
occur again. The interrupts will continue to occur in this manner until the temperature goes below
THYST. (Figure 14-1)
- 19 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
7.7.1.2. Two-Times Interrupt Mode
Temperature exceeding TO causes an interrupt and then temperature going below THYST will also
cause an interrupt if the previous interrupt has been reset by reading all the interrupt Status Register.
Once an interrupt event has occurred by exceeding TO, then reset, if the temperature remains above
the THYST, the interrupt will not occur. (Figure 14-2)
7.7.1.3. One-Time Interrupt Mode
Temperature exceeding TO causes an interrupt and then temperature going below THYST will not cause
an interrupt. Once an interrupt event has occurred by exceeding TO, then going below THYST, an
interrupt will not occur again until the temperature exceeding TO. (Figure 14-3)
TOI
TOI
THYST
THYST
SMI#
*
*
*
*
*
SMI#
*
*
*
*Interrupt Reset when Interrupt Status Registers are read
Figure 14-1. Comparator Interrupt Mode
TO
TH
Figure 14-2. Two-Times Interrupt Mode
I
Y S T
S M I#
*
*
* In te rru p t R e s e t w h e n In te rru p t S ta tu s R e g is te rs a re re a d
F ig u re 1 4 -3 . O n e -T im e In te rru p t M o d e
- 20 -
W83L786NR/ W83L786NG
7.7.2
Voltage
INT# interrupt for voltage is Two-Times Interrupt Mode. Voltage exceeding high limit or going below
low limit will causes an interrupt if the previous interrupt has been reset by reading all the interrupt
Status Register. (Figure 15-1)
7.7.3
Fan
INT# interrupt for fan is Two-Times Interrupt Mode. Fan count exceeding the limit, or exceeding and
then going below the limit (set at value ram index 3Bh and 3Ch), will causes an interrupt if the
previous interrupt has been reset by reading all the interrupt Status Register. (Figure 15-2)
Voltage High limit
Fan Count limit
Voltage Low limit
SMI#
*
*
*
SMI#
*
*
*
*Interrupt Reset when Interrupt Status Registers are read
Figure 15-1. Voltage SMI# Mode
Figure 15-2. Fan SMI# Mode
- 21 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
8. CONTROL AND STATUS REGISTER
8.1
Configuration Register - Index 40h
Power on default [7:0] = 0000, 0001b
BIT
7
NAME
READ/WRITE
Software Reset
Read/Write
Reserved
Read/Write
4
SOFT_PWDN
Read/Write
3
2
Reserved
Reserved
Read/Write
Read/Write
1
INT# Main Mask
Read/Write
0
START
Read/Write
6-5
8.2
DESCRIPTION
A one restores power on default value to all
registers except the Serial Bus Address register.
This bit is itself clear when it is set.
Reserved
Software Power Down. Set to 1 to power down this
chip, but I2C interface is still working.
Reserved
Reserved
A one disables the INT# outputs without affecting
the contents of Interrupt Status Registers. The
device will stop monitoring. It will resume upon
clearing of this bit.
A one enables startup of monitoring operations; a
zero puts the part in standby mode.
Note: The outputs of Interrupt pins will not be
cleared if the user writes a zero to this location after
an interrupt has occurred unlike "INT_Clear'' bit.
INT# Status Register 1 - Index 41h
Power on default [7:0] = 0000, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
7
Reserved
Read Only
Reserved
6
TEMP1_STS
Read Only
A one indicates a High or Low limit has been exceeded
from temperature sensor 1 (VTIN1). This bit is cleared
when this register is read.
5
TEMP0_STS
Read Only
A one indicates a High or Low limit has been exceeded
from temperature sensor 0 (D+_D-). This bit is cleared
when this register is read.
4-3
Reserved
Read Only
Reserved
2
VCC_STS
Read Only
A one indicates a High or Low limit has been exceeded.
(VCC, +3.3V) This bit is cleared when this register is read.
1
VRAM_STS
Read Only
A one indicates a High or Low limit has been exceeded.
(VRAM) This bit is cleared when this register is read.
0
VCORE_STS
Read Only
A one indicates a High or Low limit has been exceeded.
(VCORE) This bit is cleared when this register is read.
8.3
INT# Status Register 2 - Index 42h
- 22 -
W83L786NR/ W83L786NG
Power on default [7:0] = 0000, 0000 b
BIT
7-2
NAME
READ/WRITE
DESCRIPTION
Reserved
Read Only
Reserved.
1
FAN2_STS
Read Only
A one indicates the fan count limit has been
exceeded. This bit is cleared when this register is
read.
0
FAN1_STS
Read Only
A one indicates the fan count limit has been
exceeded. This bit is cleared when this register is
read.
8.4
INT# Mask Register 1 - Index 43h
Power on default = 1101, 1110 b
BIT
NAME
READ/WRITE
DESCRIPTION
7
Reserved
Read/Write
Reserved
6
MSK_T1_INT
Read/Write
A one disables the corresponding interrupt status bit for
SMI# interrupt. (Temperature 1)
5
MSK_T0_INT
Read/Write
A one disables the corresponding interrupt status bit for
SMI# interrupt. (Temperature 0)
Reserved
Read/Write
Reserved
2
MSK_VCC_INT
Read/Write
A one disables the corresponding interrupt status bit for
SMI# interrupt. (VCC, +3.3V)
1
MSK_VRAM_INT
Read/Write
A one disables the corresponding interrupt status bit for
SMI# interrupt. (VRAM)
0
MSK_VCORE_I
NT
Read/Write
A one disables the corresponding interrupt status bit for
SMI# interrupt. (VCORE)
4-3
8.5
INT# Mask Register 2 - Index 44h
Power on default = 1111, 1110 b
BIT
7-2
NAME
READ/WRITE
DESCRIPTION
Reserved
Read/Write
Reserved.
1
MSK_FAN2_INT
Read/Write
A one disables the corresponding interrupt status
bit for SMI# interrupt. (Fan 2 speed counter)
0
MSK_FAN1_INT
Read/Write
A one disables the corresponding interrupt status
bit for SMI# interrupt. (Fan 1 speed counter)
8.6
Register - Index 45h
Power on default [7:0] = 0000, 0000 b
- 23 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
BIT
7-0
8.7
NAME
READ/WRITE
Reserved
Read/write
DESCRIPTION
Reserved.
Register - Index 46h
Power on default [7:0] = 0000, 0000 b
BIT
7-0
8.8
NAME
READ/WRITE
Reserved
Read/write
DESCRIPTION
Reserved
GPIO/GPO Function Enable Control Register - Index 47h
Power on default [7:0] = 0000, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
Pin 2 Function Select.
7
EN_GPIO2
Read/Write
- Function of Pin 2 is TEMP_FAULT#.
- Function of Pin 2 is GPIO2.
Pin 1 Function Select.
6
EN_GPIO1
Read/Write
- Function of Pin 1 is FAN_FAULT#.
- Function of Pin 1 is GPIO1.
Pin 20 Function Select.
5
EN_GPIO7
Read/Write
- Function of Pin 20 is VOLTAGE_FAULT#.
- Function of Pin 20 is GPIO7.
4-3
Reserved
Read/Write
Reserved
Pin 18 Function Select.
2
EN_GPIO6
Read/Write
- Function of Pin 18 is PWM/DC_OUT2.
- Function of Pin 18 is GPIO6.
Pin 9 Function Select.
1
EN_GPIO5
Read/Write
- Function of Pin 9 is FANIN2.
- Function of Pin 9 is GPIO5.
Enable GPO3 & GPO4 Function of Pin 6 & Pin7.
0
EN_GPO3
&4
Read/Write
- Functions of GPO3 & GPO4 are disabled.
- Functions of GPO3 & GPO4 are enabling.
8.9
Register - Index 48h
Reserved
8.10 GPIO1-2 & 5-7 I/O Mode Control Register - Index 49h
Power on default [7:0] = 0000, 0000 b
- 24 -
W83L786NR/ W83L786NG
BIT
7
NAME
Reserved
READ/WRITE
Read/write
DESCRIPTION
Reserved.
GPIO2 I/O Mode Select. (Only for GPIO function of Pin 2
is enabled.)
6
GPIO2_MODE
Read/Write
- GPIO2 is an input port.
- GPIO2 is an output port.
GPIO1 I/O Mode Select. (Only for GPIO function of Pin 1
is enabled.)
5
GPIO1_MODE
Read/Write
- GPIO1 is an input port.
- GPIO1 is an output port.
GPIO7 I/O Mode Select. (Only for GPIO function of Pin
20 is enabled.)
4
GPIO7_MODE
Read/Write
- GPIO7 is an input port.
- GPIO7 is an output port.
3-2
Reserved
Read/Write
Reserved
GPIO6 I/O Mode Select. (Only for GPIO function of Pin
18 is enabled.)
1
GPIO6_MODE
Read/Write
- GPIO6 is an input port.
- GPIO6 is an output port.
GPIO5 I/O Mode Select. (Only for GPIO function of Pin 9
is enabled.)
0
GPIO5_MODE
Read/Write
- GPIO5 is an input port.
- GPIO5 is an output port.
8.11 GPO3-4 Output Data Register - Index 4Ah
Power on default [7:0] = 000P, PPPP b (P: power on trapping)
BIT
NAME
READ/WRITE
DESCRIPTION
7
Reserved
Read/write
Reserved.
6
GPO4_VAL
Read/Write
GPO4 Value. Set the output value of GPO4 pin.
5
GPO3_VAL
Read/Write
GPO3 Value. Set the output value of GPO3 pin.
Reserved
Read/Write
Reserved
4-0
- 25 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
8.12 GPIO1-2 & 5-7 Data Register - Index 4Bh
Power on default [7:0] = 0000, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
7
Reserved
Read/write
Reserved.
6
GPIO2_VAL
Read/Write
GPIO2 Value. Set the output value of GPIO2 pin. Reading
this bit will return the value of pin 2.
5
GPIO1_VAL
Read/Write
GPIO1 Value. Set the output value of GPIO1 pin. Reading
this bit will return the value of pin 1.
4
GPIO7_VAL
Read/Write
GPIO7 Value. Set the output value of GPIO7 pin. Reading
this bit will return the value of pin 20.
Reserved
Read/Write
Reserved
1
GPIO6_VAL
Read/Write
GPIO6 Value. Set the output value of GPIO6 pin. Reading
this bit will return the value of pin 18.
0
GPIO5_VAL
Read/Write
GPIO5 Value. Set the output value of GPIO5 pin. Reading
this bit will return the value of pin 9.
3-2
8.13 Nuvoton Vendor ID (Low Byte) - Index 4Ch
Power-on default [7:0] = 1010, 0011 b (0xA3h)
BIT
NAME
7:0
VIDL[7:0]
READ/WRITE
Read Only
DESCRIPTION
Vendor ID Low Byte. Default A3h.
8.14 Nuvoton Vendor ID (High Byte) - Index 4Dh
Power-on default [7:0] = 0101, 1100 b (0x5Ch)
BIT
7:0
NAME
VIDH[7:0]
READ/WRITE
Read Only
DESCRIPTION
Vendor ID High Byte. Default 5Ch
8.15 Chip ID - Index 4Eh
Power on default [7:0] = 1000, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-0
CHIPID[7:0]
Read Only
Nuvoton Chip ID number. Read this register will return
0x80h for W83L786NR/NG.
- 26 -
W83L786NR/ W83L786NG
8.16 Register - Index 4Fh
Reserved
8.17 Register - Index 50h
Reserved
8.18 GPIO1-2 & 5-7 Output Mode Control Register - Index 51h
Power on default [7:0] = 0000, 0000 b
BIT
NAME
READ/WRITE
7
Reserved
Read/write
6
GPIO2_OB
Read/write
5
GPIO1_OB
Read/write
4
GPIO7_OB
Read/write
Reserved
Read/write
1
GPIO6_OB
Read/write
0
GPIO5_OB
Read/write
3-2
DESCRIPTION
Reserved.
Enable GPIO2 as Output Buffer. Set to
GPIO2 can drive logical high or logical low.
GPIO2 is open-drain.
Enable GPIO1 as Output Buffer. Set to
GPIO1 can drive logical high or logical low.
GPIO1 is open-drain.
Enable GPIO7 as Output Buffer. Set to
GPIO7 can drive logical high or logical low.
GPIO7 is open-drain.
Reserved
Enable GPI6 as Output Buffer. Set to
GPIO6 can drive logical high or logical low.
GPIO6 is open-drain.
Enable GPIO5 as Output Buffer. Set to
GPIO5 can drive logical high or logical low.
GPIO5 is open-drain.
- 27 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
8.19 INT# Property Select - Index 52h
Power on - --0000, 0100 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-4
Reserved
Read/Write
3-2
TEMP_INT_MD [1:0]
Read/Write
1
EN_INT#
Read/Write
0
Reserved
Read/Write
Reserved.
Temperature INT Mode Select.
- Comparator Interrupt Mode:
Temperature 1/2 exceeds TO (Overtemperature) limit causes an interrupt. Reading the
Interrupt Status will reset this interrupt.
- Two Time Interrupt Mode:(Default)
This bit use in temperature sensor 1/2
interrupt mode with hysteresis and TO type.
Temperature exceeding TO, causes an interrupt
and then temperature going below THYST will also
cause another interrupt if the previous interrupt
has been reset by reading the interrupt Status
Register. Once an interrupt event has occurred by
exceeding TO, then reset, if the temperature
remains above the THYST.
- One Time Interrupt Mode:
This bit use in temperature sensor 1/2
interrupt mode with hysteresis type. Temperature
exceeding TO (Over-temperature) causes an
interrupt and then temperature going below THYST
(Hysteresis temperature) will not cause an
interrupt. Once an interrupt event has occurred by
exceeding TO, then going below THYST, and
interrupt will not occur again until the temperature
exceeding TO.
Enable INT# Output. A one enables the INT#
Interrupt output.
Reserved.
8.20 Thermal Sensor 1/2 Type Register - Index 53h
Power on default [7:0] = 0100, 0001 b
BIT
NAME
READ/WRITE
7-2
Reserved
Read/Write
1
T1_TYPE
Read/Write
0
T0_TYPE
Read/Write
DESCRIPTION
Reserved.
Temperature sensor 1 type.
- Thermistor (10K @ 25 degree C, B=3435).
- thermal diode.
Temperature sensor 0 (GPU) type.
- Thermistor (10K @ 25 degree C, B=3435)
- thermal diode.
8.21 Fan Divisor Register - Index 54h
- 28 -
W83L786NR/ W83L786NG
Power on default [7:0] = 0001, 0001 b
BIT
7
NAME
Reserved
READ/WRITE
Read/write
DESCRIPTION
Reserved.
FAN2 Divisor Select.
- divide by 1;
- divide by 2;
- divide by 4;
6-4
FAN2_DIV_SEL[2:0]
Read/Write
- divide by 8.
- divide by 16.
- divide by 32.
- divide by 64.
- divide by 128.
3
Reserved
Read/write
Reserved.
FAN1 Divisor Select.
- divide by 1;
- divide by 2;
- divide by 4;
2-0
FAN1_DIV_SEL[2:0]
Read/Write
- divide by 8.
- divide by 16.
- divide by 32.
- divide by 64.
- divide by 128.
8.22 Reserved - Index 55h ~ 5Fh
Reserved
- 29 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
8.23 FAN Configuration Register - Index 80h
Power on default [7:0] = 0011, 1100 b
BIT
NAME
READ/WRITE
DESCRIPTION
FAN2 Control Mode
7
EN_PWM2
Read/Write
- PWM FAN Control Mode
- DC FAN Control Mode
FAN1 Control Mode
6
EN_PWM1
Read/Write
- PWM FAN Control Mode
- DC FAN Control Mode
FAN2 Control Mode.
- Manual Control Mode. (Default)
5-4
FAN2_MODE
Read/Write
- Thermal Cruise mode.
- SMART FANTM II Mode.
- FAN_SET.
FAN 1 Control Mode.
- Manual Control Mode. (Default)
3-2
FAN1_MODE
Read/Write
- Thermal Cruise mode.
- SMART FANTM II Mode.
- FAN_SET.
1-0
Reserved
Read/Write
Reserved.
8.24 DC FAN1 Output Voltage Level Control Register (Manual Mode) / FAN1
Output Voltage Table (SMART FANTM II Mode) – Index 81h
Power on default [7:0] 1111, 1111 b
For Manual Mode
BIT
7-4
NAME
Reserved
READ/WRITE
Read/Write
DESCRIPTION
Reserved.
DC FAN1 Output Level. Only for Thermal Manual Mode
while CR80h bit3-2 is 00. This 3-bit register determines
the DC FAN driving voltage.
3-0
FAN1_DC
[3:0]
Read/Write
- DC output is 0V.
- DC output is 3.3V.
- DC output levels are from 0V to 3.3v and they
are separated into 16 levels equally.
- 30 -
W83L786NR/ W83L786NG
For SMART FANTM II Mode
BIT
NAME
READ/WRITE
DESCRIPTION
7-4
FAN1_TAB2[3:0]
Read/Write
FAN1 Output Level 2 for SMART FANTM II Mode.
3-0
FAN1_TAB1[3:0]
Read/Write
FAN1 Output Level 1 for SMART FANTM II Mode.
8.25 FAN1 Output Voltage Table (SMART FANTM II Mode) - Index 82h
Power on default [7:0] 1111, 1111 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-4
FAN1_TAB4[3:0]
Read/Write
FAN1 Output Level 4 for SMART FANTM II Mode.
3-0
FAN1_TAB3[3:0]
Read/Write
FAN1 Output Level 3 for SMART FANTM II Mode.
8.26 TEMP0 (D+_D-) Target Temperature Register (Thermal Cruise Mode) /
TEMP_POINT1 for FAN1 (SMART FANTM II Mode) - Index 83h
Power on default [7:0] = 0000, 0000 b
TEMP1 target temperature register for Thermal Cruise mode.
BIT
NAME
READ/WRITE
DESCRIPTION
7-0
TEMP_TAR_T0[7:0]
Read/Write
TEMP0 Target Temperature. Only for Thermal
Cruise Mode while CR84h bit3-2 is 01.
TEMP_POINT1 register for Smart FAN II Mode.
BIT
7-0
NAME
TEMP_P1F1[7:0]
READ/WRITE
DESCRIPTION
Read/Write
TEMP_POINT1 for FAN1 use Smart FAN II
Mode.
8.27 TEMP_POINT2 for FAN1 (SMART FANTM II Mode) - Index 84h
Power on default [7:0] = 0000, 0000 b
BIT
7-0
NAME
TEMP_P2F1[7:0]
READ/WRITE
DESCRIPTION
Read/Write
TEMP_POINT2 for FAN1 use SMART FANTM II
Mode.
- 31 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
8.28 FAN 1 Speed Low Limit Rate Control Register (Thermal Cruise Mode) /
TEMP_POINT3 for FAN1 (SMART FANTM II Mode) - Index 85h
Power on default [7:0] = 0000, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-4
Reserved
Read/Write
Reserved.
3-0
FAN1_LL [3:0]
Read/Write
Low Limit Speed of FAN1. Only for Thermal Cruise
mode.
TEMP_POINT3 register for Smart FAN II Mode.
BIT
7-0
NAME
TEMP_P3F1[7:0]
READ/WRITE
DESCRIPTION
Read/Write
TEMP_POINT3 for FAN1 use SMART FANTM II
Mode.
8.29 TEMP_POINT4 for FAN1 (SMART FANTM II Mode) - Index 86h
Power on default [7:0] = 0000, 0000 b
BIT
7-0
NAME
TEMP_P4F1[7:0]
READ/WRITE
DESCRIPTION
Read/Write
TEMP_POINT4 for FAN1 use SMART FANTM II
Mode.
8.30 DC FAN2 Output Voltage Level Control Register (Manual Mode)/ FAN2 Output
Voltage Table (SMART FANTM II Mode) - 87h
Power on default [7:0] 1111, 1111 b
For Manual Mode
BIT
7-4
NAME
Reserved
READ/WRITE
Read/Write
DESCRIPTION
Reserved.
DC FAN2 Output Level. Only for Thermal Manual Mode
while CR80h bit5-4 is 00. This 3-bit register determines
the DC FAN driving voltage.
3-0
FAN2_DC [3:0]
Read/Write
- DC output is 0V.
- DC output is 3.3V.
- DC output levels are from 0V to 3.3v and they
are separated into 16 levels equally.
- 32 -
W83L786NR/ W83L786NG
For SMART FANTM II Mode
BIT
NAME
READ/WRITE
DESCRIPTION
7-4
FAN2_TAB2[3:0]
Read/Write
FAN2 Output Level 2 for SMART FANTM II Mode.
3-0
FAN2_TAB1[3:0]
Read/Write
FAN2 Output Level 1 for SMART FANTM II Mode.
8.31 FAN2 Output Voltage Table (SMART FANTM II Mode) - Index 88h
Power on default [7:0] 1111, 1111 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-4
FAN2_TAB4[3:0]
Read/Write
FAN2 Output Level 4 for SMART FANTM II Mode.
3-0
FAN2_TAB3[3:0]
Read/Write
FAN2 Output Level 3 for SMART FANTM II Mode.
8.32 TEMP1 (VTIN1) Target Temperature Register (Thermal Cruise Mode) /
TEMP_POINT1 for FAN2 (SMART FANTM II Mode) - Index 89h
Power on - [7:0] = 0000, 0000 b
TEMP2 target temperature register for Thermal Cruise mode.
BIT
7-0
NAME
TEMP_TAR_T1[7:0]
READ/WRITE
DESCRIPTION
Read/Write
TEMP1 Target Temperature. Only for Thermal
Cruise Mode while CR84h bit5-4 is 01.
TEMP_POINT1 register for SMART FANTM II Mode.
BIT
7-0
NAME
TEMP_P1F2[7:0]
READ/WRITE
DESCRIPTION
Read/Write
TEMP_POINT1 for FAN2 use SMART FANTM II
Mode.
8.33 TEMP_POINT2 for FAN2 (SMART FANTM II Mode) - Index 8Ah
Power on - [7:0] = 0000, 0000 b
BIT
7-0
NAME
TEMP_P2F2[7:0]
READ/WRITE
DESCRIPTION
Read/Write
TEMP_POINT2 for FAN2 use SMART FANTM II
Mode.
- 33 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
8.34 FAN 2 Speed Low Limit Rate Control Register/ TEMP_POINT3 for FAN2 SMART
FANTM II Mode) - Index 8Bh
Power on default [7:0] =0000, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-5
Reserved
Read/Write
Reserved.
4-1
FAN2_LL [3:0]
Read/Write
Low Limit Speed of FAN2. Only for Thermal Cruise
mode.
TEMP_POINT3 register for SMART FANTM II Mode.
BIT
7-0
NAME
TEMP_P3F2[7:0]
READ/WRITE
DESCRIPTION
Read/Write
TEMP_POINT3 for FAN2 use SMART FANTM II
Mode.
8.35 TEMP_POINT4 for FAN2 (SMART FANTM II Mode) - Index 8Ch
Power on default [7:0] = 0000, 0000 b.
BIT
7-0
NAME
TEMP_P4F2[7:0]
READ/WRITE
DESCRIPTION
Read/Write
TEMP_POINT4 for FAN2 use SMART FANTM II
Mode.
8.36 Tolerance of Temperature Register - Index 8Dh
Power on default [7:0] = 0011, 0011 b
For Thermal Cruise mode
BIT
NAME
READ/WRITE
DESCRIPTION
7-4
TOL_T1[3:0]
Read/Write
Tolerance of Fan 2 Target Temperatures
(Temp1). Only for Thermal Cruise mode.
3-0
TOL_T0[3:0]
Read/Write
Tolerance of Fan 1 Target Temperature
(Temp0). Only for Thermal Cruise mode.
READ/WRITE
DESCRIPTION
For Smart FAN II Mode
BIT
NAME
7-4
TOL_T1[3:0]
Read/Write
Tolerance of Fan 2 Temperatures (Temp1). Only
for SMART FANTM II Mode.
3-0
TOL_T0[3:0]
Read/Write
Tolerance of Fan 1 Temperature (Temp0). Only for
SMART FANTM II Mode.
- 34 -
W83L786NR/ W83L786NG
8.37 FAN 2D/3D state Control Register - Index 8Eh
At SMART FANTM II Mode, FAN will be controlled by 2D/3D mode after writing 2Dh/3Dh to CR8A
8.38 FAN Pre-Scale Register - Index 8Fh
Power on default [7:0] = 0010, 0010 b
BIT
NAME
READ/WRITE
DESCRIPTION
PWM Input Clock Select of Fan 2. This bit
select FAN input clock to pre-scale divider.
7
PWM2_CLK_SEL
Read/Write
- 1.44MHz
- 180KHz
FAN 2 PWM Input Clock divider.
- divider is 1
- divider is 2
- divider is 4
6-4
PWM2_CLK_DIV
[2:0]
Read/Write
- divider is 8
- divider is 16
- divider is 32
- divider is 64
- divider is 128
PWM Input Clock Select of Fan 1. This bit
select FAN input clock to pre-scale divider.
3
PWM1_CLK_SEL
Read/Write
- 1.44MHz
- 180KHz
FAN 1 PWM Input Clock divider.
- divider is 1
- divider is 2
- divider is 4
2-0
PWM1_CLK_DIV
[2:0]
Read/Write
- divider is 8
- divider is 16
- divider is 32
- divider is 64
- divider is 128
- 35 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
8.39 FAN Initial Output Value – Index90h
Power on trapping
BIT
NAME
READ/WRITE
DESCRIPTION
7
FAN_3DST
Read
A one indicates FAN is working at 3D mode (for SMART
FANTM II Mode).
It can be programmed directly by I2C.
6-4
Reserved
Read/Write
Reserved.
FAN Initial Speed.
VDD
Ra
FAN_SET
Rb
3-0
FANINI
[3:0]
Read/Write
Use two resistors to divide a four section to represent
different initial FAN Speed. The table is shown as following.
Section
FAN Speed rate
Ra
Rb
3
100﹪
9.1K
×
2
81﹪
4.7K
9.1K
1
62﹪
9.1K
4.7K
0
43﹪
×
9.1K
8.40 Fan Step down Time Register - Index 91h
Power on default [7:0] = 0001, 0100 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-0
STEP_DOWN_T[7:0]
Read/Write
The time interval, which is 1-second unit, to
decrease DC output level in SMART FANTM II
Control mode.
8.41 Fan Step up Time Register - Index 92h
Power on default [7:0] = 0000, 1010 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-0
STEP_UP_T[7:0]
Read/Write
The time interval, which is 1-second unit, to increase
DC output level in SMART FANTM II Control mode.
- 36 -
W83L786NR/ W83L786NG
8.42 Temperature Sensor 0 (D+_D-) Offset Register - Index 93h
Power-on default [7:0] = 0000, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
Temperature 0 base temperature. The real temperature is
sum of both monitor value and offset value.
0111,1111 => +127/4 degree C
0111,1110 => +126/4 degree C
:
7-0
OFFSET0[7:0]
Read/Write
0000,0001 => +1/4 degree C
0000,0000 => +0 degree C
1111,1111 => -1/4 degree C
1111,1110 => -2/4 degree C
:
1000,0000 => -128/4 degree
8.43 Temperature Sensor 1 (VTIN1) Offset Register – Index 94h
Power-on default [7:0] = 0000, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
Temperature 1 base temperatures. The real temperature
is sum of both monitor value and offset value.
0111,1111 => +127/4 degree C
0111,1110 => +126/4 degree C
:
7-0
OFFSET1[7:0]
Read/Write
0000,0001 => +1/4 degree C
0000,0000 => +0 degree C
1111,1111 => -1/4 degree C
1111,1110 => -2/4 degree C
:
1000,0000 => -128/4 degree
8.44 Register - Index 95h
Power-on default [7:0] = 0000, 0000 b
BIT
7-0
NAME
Reserved
READ/WRITE
DESCRIPTION
Read/Write
- 37 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
8.45 Register - Index 96h
Power-on default [7:0] = 0001, 1001 b
BIT
7-0
NAME
Reserved
READ/WRITE
DESCRIPTION
Read/Write
8.46 Register - Index 97h
Power-on default [7:0] = 0001, 1001 b
BIT
7-0
NAME
Reserved
READ/WRITE
DESCRIPTION
Read/Write
Value RAM and Limit Value
8.47 Value RAM - Index 20h- 3Fh or 60h - 7Fh
INDEX A7-A0
DESCRIPTION
UNIT
20h
VCORE reading
21h
VRAM reading
22h
VCC reading
23h
Reserved
24h
Reserved
25h
Temperature 0 reading (D+_D-, 0 ~ 255)
°C
26h
Temperature 1 reading (VTIN1, 0 ~ 255)
°C
27h
Reserved
FANIN1 reading
28h
Note: This location stores the number of counts of the internal clock per
revolution.
Count
FANIN2 reading
29h
Note: This location stores the number of counts of the internal clock per
revolution.
2Ah
Reserved
2Bh
VCORE High Limit. (0xff)
2Ch
VCORE Low Limit. (0x00)
2Dh
VRAM High Limit. (0xff)
2Eh
VRAM Low Limit. (0x00)
2Fh
VCC High Limit. (0xff)
- 38 -
Count
W83L786NR/ W83L786NG
Value RAM - Index 20h- 3Fh or 60h - 7Fh, continued.
INDEX A7-A0
DESCRIPTION
UNIT
30h
VCC Low Limit. (0x00)
31h
Reserved
32h
Reserved
33h
Reserved
34h
Reserved
35h
Over Temperature 0 Limit (High). (0x50)
°C
36h
Temperature 0 Hysteresis Limit (Low). (0x4b)
°C
37h
Over Temperature 1 Limit (High). (0x50)
°C
38h
Temperature 1 Hysteresis Limit (Low). (0x4b)
°C
39h
Reserved
°C
3Ah
Reserved
°C
FAN1 Fan Count Limit. (0xff)
3Bh
Note: It is the number of counts of the internal clock for the Low Limit of
the fan speed.
Count
FAN2 Fan Count Limit. (0xff)
3Ch
Note: It is the number of counts of the internal clock for the Low Limit of
the fan speed.
3Dh
FAN1 Speed Control Output Level
3Eh
FAN2 Speed Control Output Level
3Fh
Reserved
- 39 -
Count
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
9. ELECTRICAL CHARACTERISTICS
9.1
Absolute Maximum Ratings
PARAMETER
RATING
Power Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
UNIT
-0.5 to 7.0
-0.5 to VCC+0.5
0 to +70
-55 to +150
V
V
°C
°C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
9.2
DC Characteristics
(Ta = 0° C to 70° C, VDD = 5V ± 10%, VSS = 0V)
PARAMETER
SYM.
MIN.
TYP.
MAX.
UNIT
CONDITIONS
I/O12t - TTL level bi-directional pin with source-sink capability of 12 mA
Input Low Voltage
VIL
Input High Voltage
VIH
Output Low Voltage
VOL
Output High Voltage
VOH
Input High Leakage
ILIH
Input Low Leakage
ILIL
0.8
2.0
V
V
0.4
V
IOL = 12 mA
V
IOH = - 12 mA
+10
μA
VIN = VDD
-10
μA
VIN = 0V
2.4
I/O12ts - TTL level bi-directional pin with source-sink capability of 12 mA and schmitt-trigger
level input
Input Low Threshold
Voltage
Vt-
0.5
0.8
1.1
V
VDD = 5 V
Input High Threshold
Voltage
Vt+
1.6
2.0
2.4
V
VDD = 5 V
Hysteresis
VTH
0.5
1.2
V
VDD = 5 V
Output Low Voltage
VOL
V
IOL = 12 mA
Output High Voltage
VOH
V
IOH = - 12 mA
Input High Leakage
ILIH
+10
μA
VIN = VDD
Input Low Leakage
ILIL
-10
μA
VIN = 0V
0.4
2.4
- 40 -
W83L786NR/ W83L786NG
DC Characteristics, continued
PARAMETER
SYM.
MIN.
TYP.
MAX.
UNIT
CONDITIONS
OUT12t - TTL level output pin with source-sink capability of 12 mA
Output Low
Voltage
VOL
Output High
Voltage
VOH
0.4
2.4
V
IOL = 12 mA
V
IOH = -12 mA
OD8 - Open-drain output pin with sink capability of 8 mA
Output Low
Voltage
VOL
0.4
V
IOL = 8 mA
OD12 - Open-drain output pin with sink capability of 12 mA
Output Low
Voltage
VOL
0.4
V
IOL = 12 mA
OD48 - Open-drain output pin with sink capability of 48 mA
Output Low
Voltage
VOL
0.4
V
0.8
V
IOL = 48 mA
INt - TTL level input pin
Input Low Voltage
VIL
Input High Voltage
VIH
Input High Leakage
ILIH
+10
μA
VIN = VDD
Input Low Leakage
ILIL
-10
μA
VIN = 0 V
INts
2.0
V
- TTL level Schmitt-triggered input pin
Input Low
Threshold Voltage
Vt-
0.5
0.8
1.1
V
VDD = 5 V
Input High
Threshold Voltage
Vt+
1.6
2.0
2.4
V
VDD = 5 V
Hysteresis
VTH
0.5
1.2
V
VDD = 5 V
Input High Leakage
ILIH
+10
μA
VIN = VDD
Input Low Leakage
ILIL
-10
μA
VIN = 0 V
- 41 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
9.3
9.3.1
AC Characteristics
Serial Bus Timing Diagram
t SCL
tR
t
R
SCL
t
t HD;SDA
t SU;STO
SU;DAT
VALID DATA
SDA IN
t HD;DAT
SDA OUT
Serial Bus Timing Diagram
Serial Bus Timing
PARAMETER
SCL clock period
Start condition hold time
Stop condition setup-up time
DATA to SCL setup time
DATA to SCL hold time
SCL and SDA rise time
SCL and SDA fall time
9.3.2
SYMBOL
MIN.
-
10
4.7
4.7
120
5
t SCL
tHD;SDA
tSU;STO
tSU;DAT
tHD;DAT
tR
tF
MAX.
1.0
300
UNIT
uS
uS
uS
nS
nS
uS
nS
VID Input Skew
t skew
t hold
VIDA[5:0]/VIDB[5:0]
VALID VID
VALID VID
VID Input Timing
PARAMETER
SYMBOL
VID Input Unstable Time
t-Skew
VID Valid Input Hold Time
t-hold
- 42 -
MIN.
MAX.
0.8
4
UNIT
uS
uS
W83L786NR/ W83L786NG
10. THE TOP MARKING
The top marking of W83L786NR
W83L786NR
2826978Y-61
443OB
Left: Nuvoton logo
1st line: part number: W83L786NR
2nd line: Tracking code 2 826978Y-61
3rd line: Tracking code 443 O B
443: packages made in '04, week 43
O: assembly house ID; A means ASE, S means SPIL, O means OSE
B: IC revision
The top marking of W83L786NG
W83L786NG
2826978Y-61
443OB
Left: Nuvoton logo
1st line: part number: W83L786NG, G means Pb-free package
2nd line: Tracking code 2 826978Y-61
3rd line: Tracking code 443 O B
443: packages made in '04, week 43
O: assembly house ID; A means ASE, S means SPIL, O means OSE
B: IC revision
- 43 -
Publication Release Date: March 31, 2006
Revision 0.9
W83L786NR/ W83L786NG
11. PACKAGE SPECIFICATION
20L SSOP-209 mil
D
11
20
DTEAIL A
HE E
1
10
b
A2 A
SEATING PLANE
θ
Y
e
b
SYMBOL
A
A1
A2
b
c
D
E
HE
e
L
L1
Y
θ
A1
DETAIL A
DIMENSION IN MM DIMENSION IN INCH
MIN. NOM MAX. MIN. NOM MAX.
0.079
2.00
0.05
1.65 1.75
0.22
0.09
6.90 7.20
5.00 5.30
7.40 7.80
0.65
0.55 0.75
1.25
0
1.85
0.38
0.25
7.50
5.60
8.20
0.002
0.065
0.009
0.004
0.272
0.197
0.291
0.069 0.073
0.015
0.010
0.283 0.295
0.209 0.220
0.307 0.323
0.0256
0.95
0.10
8
0.021 0.030 0.037
0.050
0.004
0
8
- 44 -
SEATING PLANE
L
L1
W83L786NR/ W83L786NG
Important Notice
Nuvoton products are not designed, intended, authorized or warranted for use as components
in systems or equipment intended for surgical implantation, atomic energy control
instruments, airplane or spaceship instruments, transportation instruments, traffic signal
instruments, combustion control instruments, or for other applications intended to support or
sustain life. Furthermore, Nuvoton products are not intended for applications wherein failure of
Nuvoton products could result or lead to a situation wherein personal injury, death or severe
property or environmental damage could occur.
Nuvoton customers using or selling these products for use in such applications do so at their
own risk and agree to fully indemnify Nuvoton for any damages resulting from such improper
use or sales.
- 45 -
Publication Release Date: March 31, 2006
Revision 0.9
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