W83L771W/W83L771G
Winbond
H/W Monitoring IC
W83L771W/ W83L771G
W83L771W
Data Sheet Revision History
PAGES
DATES
VERSION
VERSION ON
WEB
0.5
NA
First Release
MAIN CONTENTS
1
n.a.
2
n.a.
01/31/05
0.6
NA
Add lead-free package version
3
n.a.
03/31/06
0.7
NA
Correct section 8.6 conversion rate;
correct section 9.1 operating
temperature; add application circuit
12/10/04
4
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. 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: March 31, 2006
Revision 0.7
W83L771W/G
Table of Contents1.
GENERAL DESCRIPTION ......................................................................................................... 1
2.
FEATURES ................................................................................................................................. 1
2.1
Monitoring Items - Temperature ..................................................................................... 1
2.2
General ........................................................................................................................... 1
2.3
Package .......................................................................................................................... 1
3.
KEY SPECIFICATIONS .............................................................................................................. 2
4.
BLOCK DIAGRAM ...................................................................................................................... 2
5.
PIN CONFIGURATION ............................................................................................................... 2
6.
PIN DESCRIPTION..................................................................................................................... 3
7.
FUNCTIONAL DESCRIPTION.................................................................................................... 4
8.
7.1
General Description ........................................................................................................ 4
7.2
Access Interface ............................................................................................................. 4
7.3
ALERT Output Mode..................................................................................................... 5
7.3.1
ALERT Output Comparator Mode .................................................................................5
7.3.2
ALERT Output Interrupt Mode.......................................................................................6
7.3.3
ALERT Output SMBus ALERT Mode ............................................................................7
7.4
T _ CRIT _ A Output and T_CRIT flags ......................................................................... 8
7.5
Measured Temperature Data Format ............................................................................. 9
7.5.1
Measure Remote Temperature Data Format....................................................................9
7.5.2
Measure Local Temperature Data Format........................................................................9
7.6
Digital Filter ................................................................................................................... 10
7.7
Fault Detect................................................................................................................... 11
7.8
Conversion Rate and Moving Average ......................................................................... 11
CONTROL AND STATUS REGISTER ..................................................................................... 12
- II -
Publication Release Date: March 06
Revision 0.7
W83L771W/ W83L771G
8.1
W83L771W/G Registers ............................................................................................... 12
8.2
Data Format of Temperature Registers (LT, RTHB, RTLB, LHS, RHSHB, RHSLB, LLS,
RLSHB, RLSLB)........................................................................................................................ 13
9.
8.3
Status Register (SR)..................................................................................................... 13
8.4
Configuration Register (C) ............................................................................................ 14
8.5
T_CRIT Hysteresis Register (TH)................................................................................. 14
8.6
Conversion Rate Register (CR) .................................................................................... 14
8.7
Filter and Alert Configure Register (RDTF) .................................................................. 15
ELECTRICAL CHARACTERISTIC ........................................................................................... 16
9.1
Absolute Maximum Ratings .......................................................................................... 16
9.2
DC Characteristics ........................................................................................................ 16
9.3
AC Characteristics ........................................................................................................ 17
10.
THE TOP MARKING................................................................................................................. 18
11.
PACKAGE SPECIFICATION .................................................................................................... 19
12.
APPLICATION CIRCUITS ........................................................................................................ 20
- III -
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
1. GENERAL DESCRIPTION
W83L771W/G, a 2-channel temperature sensor with a 2-wire System Management Bus (SMBusTM)
serial interface, is Winbond hardware monitoring IC specifically designed for notebook applications.
W83L771W/G has an on-chip thermal sensor and a remote temperature sensor input with high
accuracy. The remote temperature sensor input could be connected to thermal diode or transistor
such as 2N3904. A 10-bit plus sign ADC (Analog to Digital Converter) with 0.125°C resolutions is built
inside W83L771W/G to convert the monitored temperature value.
W83L771W/G is a high temperature accuracy, low-power consumption, SMBusTM serial interface IC,
which is available in 8-pin, TSSOP package, and the working voltage is 3.3 V ±10%.
2. FEATURES
2.1
Monitoring Items - Temperature
2.2
General
2.3
Measure the temperature with high accuracy, up to +/- 1℃ accuracy.
One on-chip thermal sensor
One remote temperature sensor input
Interface: SMBusTM serial interface
3.3V±10% VCC operation
10 bit plus sign remote temperature data format, 0.125°C resolution
Programmable offset register for various thermal diodes
ALERT Output supports SMBusTM 2.0 protocol
Programmable Temperature High/Low limit and hysteresis for
T _ CRIT _ A output
SMBusTM 2.0 compatible interface, supports TIMEOUT
ALERT and
Package
8-pin TSSOP
-1-
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
3. KEY SPECIFICATIONS
Local temperature range and accuracy
Remote temperature range and accuracy
Supply voltage
Operating supply current
ADC resolution
0°C to +80°C
± 3°C(@70°C)
-30°C to +127°C
± 1°C(@70°C)
3.3V ±10%
1 mA typ.
11 Bits
4. BLOCK DIAGRAM
VDD
SMBData
Control
Logic
I
Command
Coder/DeCoder
xI
REGISTER BANK
(Local/Remote)
Temperature
Registers
Configuration
Registers
DPLUS
Sensor
Circuit
DMINUS
ADC
Status
Registers
SMBus
SMBCLK
ALERT
OVER
TEMPERATURE
COMPARATOR
T_CRIT_A
Fault Queue
Limit/Critical
(Hysteresis)
Registers
5. PIN CONFIGURATION
VD D
1
DPLUS
DM INUS
2
T_ C R IT_ A
3
4
.
W 83L771W
-2-
8
SM B C LK
7
SM B Data
ALER T
6
5
GND
Publication Release Date: March 06
Revision 0.7
W83L771W/G
6. PIN DESCRIPTION
PIN TYPE
I/OD12ts
OD12
PIN ATTRIBUTE
TTL level and schmitt trigger open drain output with 12 mA sink capability
Open-drain output pin with 12 mA sink capability
INts
TTL level input pin and schmitt trigger
AIN
Input pin (Analog)
PIN NAME
NO
PIN TYPE
DESCRIPTION
VDD
1
POWER
DPLUS
2
AIN
Connect to Thermal Diode Anode.
DMINUS
3
AIN
Connect to Thermal Diode Cathode.
T _ CRIT _ A
4
OD12
GND
5
GROUND
ALERT
6
OD12
SDA
7
I/OD12
SCL
8
INt s
DC power supply, voltage input 3.3V±10%.
T_CRIT alarm output, for interrupt or shutdown
control.
Power supply ground
Alarm output, for interrupt control.
Digital I/O (Open drain). SMBus bidirectional serial
data. Requires SMBus pull-up.
Digital Input (Open drain). SMBus serial clock
input. Requires SMBus pull-up.
-3-
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
7. FUNCTIONAL DESCRIPTION
7.1
General Description
The W83L771W/G provides one remote temperature sensor input which could be connected to
remote thermistors, 2N3904 transistors, or CPU/GPU thermal diode, and one local on die thermal
sensor to detect ambient temperature. The measured temperature is digitally compared with the value
stored in the programmable High/Low limit Registers and T_CRIT registers. Any out-of-limit value
could be detected by monitoring Status Register (SR). W83L771W/G also supports SMBusTM 2.0
ALARM protocol and TIMEOUT.
The data format of remote temperature is 10 bit plus sign combined with two 8 bits wide SMBusTM
access interface. The real temperature equals the measured temperature plus or minus offset value.
Offset value could be set in offset registers. The date format of the offset registers is also the same as
the data format of remote temperature.
7.2
Access Interface
W83L771W/G provides SMBus serial interface to read/write internal registers, and the SMBus address
for read and write is 10011001b and 10011000b, respectively.
The first serial bus access timing is shown as follows:
(a) Serial bus write to internal address register followed by the data byte
0
7
8
0
7
8
SCL
SDA
10
Start By
Master
10
0
1
1
00
10
R/W
D7
D6
Ack
Ack
by
by
785R
771W
Frame 1
Serial Bus Address Byte
D5
D4
D3
D2
D1
D0
Ack
Ack
by
by
785R
771W
Frame 2
Internal Index Register Byte
0
7
8
SCL(Continued)
SDA(Continued)
D7
D6
D5
D4
D3
D2
Frame 3
Data Byte
-4-
D1
D0
Ack
Ack
by
by
by
784R
785R
771W
Stop
by
Master
Publication Release Date: March 06
Revision 0.7
W83L771W/G
(b) Serial bus read form internal address register followed by the data byte
0
SCL
SDA
01
Start By
Master
7
10
0
1
1
00
10
8
0
R/W
7
D7
D6
Ack
ack
by
by
771W
785R
Frame 1
Serial Bus Address Byte
0
1
2
3
4
5
6
10
10
0
1
1
00
01
D5
D4
D3
D2
D1
8
D0
Ack
ack
by
by
771W
785R
Frame 2
Internal Index Register Byte
7
8
0
1
2
3
4
5
D7
D6
D5
D4
D3
D2
6
7
D1
D0
8
SCL(Continued)
SDA(Continued)
Frame 3
Serial Bus Byte
7.3
R/W
Ack
ack
by
by
771W
785R
by
Frame 4
Data Byte
784R
Ack
Stop by
no
ack
Ack Master
by
by
785R
Master
ALERT Output Mode
W83L771W/G ALERT pin is an active-low open-drain output pin which is triggered when measured
temperature exceeds the limitation defined in limit registers. There are three types of ALERT output
mode: ALERT output comparator mode, ALERT output interrupt mode, and ALERT output SMBus
ALERT mode. Each kind of ALERT output mode could best serve the system designer.
7.3.1
ALERT Output Comparator Mode
Fig. 7.3.1 shows the mechanism of ALERT output comparator mode. Setting Filter and Alert
Configure Register, or register address BFh, D0 to 1 could enable ALERT output comparator mode.
Under this mode, the ALERT pin will be alerted if the monitored temperature is out-of -limit and the
ALERT pin keeps low until the temperature goes back to the target range. This mode is not power on
default setting.
-5-
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
High Limit
Measured Tmperature By
W83L771W
W83L771W ALERT Pin
W83L771W High Limit Status
Fig. 7.3.1 Response of
7.3.2
ALERT
output comparator mode
ALERT Output Interrupt Mode
Fig. 7.3.2 shows the mechanism of ALERT output interrupt mode. Under this mode, W83L771W/G will
set the ALERT mask bit D7 of Configuration Register during a read of the Status Register if any flag in
Status Register is set, with the exception of Busy flag D7 and OPEN flag D2. This prevents further
ALERT triggering until the master has reset the ALERT mask bit, at the end of the interrupt service
routine. The Status Register flags are cleared only upon a read command from the master and will be
re-alerted at the end of the next conversation if the measured temperature still exceeds limitation. The
flags in Status Register will be cleared again waiting for next read command.
-6-
Publication Release Date: March 06
Revision 0.7
W83L771W/G
High Limit
Measured Tmperature By
W83L771W
ALERT mask set in response to
reading of status register by
master
W83L771WALERT Pin
End of Temperature conversion
W83L771WHigh Limit Status
Fig. 7.3.2 Response of
7.3.3
ALERT
output interrupt mode
ALERT Output SMBus ALERT Mode
Fig. 7.3.3 shows the mechanism of ALERT output SMBus ALERT mode. Under this mode, the
ALERT output of W83L771W/G is connected to SMBus alert line which has more than one device
connected to it. By using such implementation, SMBus ALERT protocol can assist the master in
resolving which slave generates an interrupt. When measured temperature exceeds the limitation, the
ALERT pin is pulled low and the corresponding alert flags in Status Register high. If there is no read
command for Status Register and the ALERT mask bit will just be set when SMBus ALERT Response
Address (ARA) occurs from master (Alert Response Address is 0001100) and W83L771W/G will
generate itself address to master. If the temperature never exceeds the limitation, the latched ALERT
pin can release by reset ALERT mask bit and the latched corresponding alert flags in Status Register
can release by reading command for Status Register.
-7-
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
High Limit
Measured Tmperature By
W83L771W
ALERT mask set in response to
Alert Response Address from
master
W83L771W ALERT Pin
End of Temperature conversion
W83L771W High Limit Status
Fig. 7.3.3 Response of
7.4
ALERT
output interrupt mode
T _ CRIT _ A Output and T_CRIT flags
T _ CRIT _ A Output pulls low when the measured temperature exceeds the critical temperature
(T_CRIT) defined in 19h, and 20h for Remote, and Local T_CRIT set point, respectively. Once the
T _ CRIT _ A Output pulls high, it will not be reset until measured temperature is lower than (T_CRIT
－ TH), where TH is Temperature Hysteresis. The Status Register will not be reset until it is read and
the temperature conversion falls below the T_CRIT set point. Figure 7.4 shows this mechanism.
T_CRIT Set Point
TH Value
T_CRIT - TH
Measured Tmperature By
W83L771W
W83L771W T_CRIT_A Pin
W83L771W T_CRIT Status
*
Fig. 7.4 Response of
T _ CRIT _ A
-8-
W83L771W Read Command
for Status Register
output
Publication Release Date: March 06
Revision 0.7
W83L771W/G
7.5
Measured Temperature Data Format
W83L771W/G can measure remote temperature with the resolution of 11-bit two’s complement format
and local temperature with the resolution of 8-bit two’s complement format.
7.5.1
Measure Remote Temperature Data Format
Table 7.5.1 shows remote temperature data with 11-bit two’s complement format.
Table 7.5.1 Measured Remote Temperature Data Format
TEMPERATURE
7.5.2
8-BIT DIGITAL OUTPUT HIGH
BYTE
8-BIT DIGITAL OUTPUT LOW BYTE
+127.875°C
0111,1111
111X,XXXX
+25.750°C
0001,1001
110X,XXXX
+2.250°C
0000,0010
010X,XXXX
+1.125°C
0000,0001
001X,XXXX
+0.000°C
0000,0000
000X,XXXX
- 1.125°C
1111,1111
111X,XXXX
- 2.250°C
1111,1110
110X,XXXX
- 25.750°C
1110,0111
010X,XXXX
- 128.875°C
1000,0000
001X,XXXX
Measure Local Temperature Data Format
Table 7.5.2 shows local temperature data with 8-bit two’s complement format.
Table 7.5.2 Measured Local Temperature Data Format
TEMPERATURE
8-BIT DIGITAL OUTPUT
+127°C
0111,1111
+25°C
0001,1001
+2°C
0000,0010
+1°C
0000,0001
+0°C
0000,0000
- 1°C
1111,1111
- 2°C
1111,1110
- 25°C
1110,0111
- 128°C
1000,0000
-9-
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
7.6
Digital Filter
W83L771W/G provides three levels Digital Filter to suppress erroneous remote temperature readings
due to noise. The register address to set digital filter is at Filter and Alert Configure Resister. If set bits
= , then no filter is selected. If set bits = or , then filter level 1
is selected. If set bits = , then level 2 is selected. Figure 7.5.1 shows the step
response of reading remote temperature with different filter level, and Figure 7.5.2 shows the impulse
response.
Temperature (oC)
5
0
4
5
4
0
No Filter Level
3
5
Filter Level 1
Filter Level 2
3
0
2
5 0
5
1
1
0
5
SAMPLE
2
0
2
5
Figure 7.5.1 Step Response of reading remote temperature
Temperature (oC)
5
0
4
5
4
0
No Filter Level
3
5
Filter Level 1
Filter Level 2
3
0
2
5 0
5
1
1
0
5
SAMPLE
2
0
2
5
Figure 7.6.2 Impulse Response of reading remote temperature
- 10 -
Publication Release Date: March 06
Revision 0.7
W83L771W/G
7.7
Fault Detect
Table 7.7 shows the response of Fault Detection if false connection of DPLUS and DMINUS occurs
after power up. Except response of Table 7.7, if false connection takes place after power up Fault
Detect, the OPEN flag will remain low and get a remote temperature -30℃, the lowest temperature
W83L771W/G could measure.
Table 7.7 response of Fault Detect
CONNECTION
STATUS REGISTER BIT
(DPLUS, DMINUS)
(OPEN)
MEASURED REMOTE
TEMPERATURE
ALERT & T _ CRIT _ A
PIN
(VDD, Floating)
1
+128 ℃
Pull Low
(GND, Floating)
0
- 128 ℃
Pull Low
(Floating, Floating)
1
+128 ℃
Pull Low
Shot
0
- 128 ℃
Pull Low
7.8
Conversion Rate and Moving Average
W83L771W/G provides an embedded moving average into conversion rate selection. The lower
conversation rate can get more average times of measured remote temperature. Using an averaging
temperature attains excellent noise rejection.
- 11 -
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
8. CONTROL AND STATUS REGISTER
8.1
W83L771W/G Registers
REGISTER NAME
(HEX)
READ
ADDRESS
(HEX)
WRITE
ADDRESS
(HEX)
POWER ON DEFAULT STATES
BINARY /
DECIMAL
HEX
Local Temperature (LT)
Remote Temperature High Byte
(RTHB)
Status Register (SR)
Configuration (C)
Conversion Rate (CR)
Local High Set point (LHS)
Local Low Set point (LLS)
Remote High Set point High
Byte (RHSHB)
Remote Low Set point High Byte
(RLSHB)
Remote Temperature Low Byte
(RTLB)
Remote Temperature Offset
High Byte (RTOHB)
Remote Temperature Offset
Low Byte (RTOLB)
Remote High Set point Low Byte
(RHSLB)
Remote Low Set point Low Byte
(RLSLB)
Remote T_CRIT Set point
(RCS)
Local T_CRIT Set point (LCS)
T_CRIT Set point (TH)
Remote Diode Temperature
Filter (RDTF)
Read Manufacturer’s ID (RMID)
Read Die Revision (RDR)
00h
01h
Read Only
Read Only
0000,0000b / 00h
0000,0000b / 00h
0
0
02h
03h
04h
05h
06h
07h
Read Only
09h
0Ah
0Bh
0Ch
0Dh
0000,0000b / 00h
0000,0000b / 00h
0000,1000b / 08h
0100,0110b / 46h
0000,0000b / 00h
0100,0110b / 46h
0
0
8
70
0
70
08h
0Eh
0000,0000b / 00h
0
10h
Read Only
0000,0000b / 00h
0
11h
11h
0000,0000b / 00h
0
12h
12h
0000,0000b / 00h
0
13h
13h
0000,0000b / 00h
0
14h
14h
0000,0000b / 00h
0
19h
19h
0110,1110b / 6Eh
110
20h
21h
BFh
20h
21h
BFh
0101,0101b / 55h
0000,1010b / 0Ah
0000,0000b / 00h
85
10
0
FEh
FFh
Read Only
Read Only
0101,1100b / 5Ch
0000,0000b / 00h
92
0
- 12 -
Publication Release Date: March 06
Revision 0.7
W83L771W/G
8.2
Data Format of Temperature Registers (LT, RTHB, RTLB, LHS, RHSHB,
RHSLB, LLS, RLSHB, RLSLB)
REGISTER: LT, RTHB, LHS, RHSHB, LLS, RLSHB DATA FORMAT: TWO’S COMPLEMENT FORMAT
BIT
VALUE
D7
D6
D5
D4
D3
D2
D1
D0
Sign
64
32
16
8
4
2
1
Unit: ℃
REGISTER: RTLB, RHSLB
DATA FORMAT: TWO’S COMPLEMENT FORMAT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
VALUE
0.5
0.25
0.125
0
0
0
0
0
8.3
BIT
Status Register (SR)
FLAG NAME
DESCRIPTION
D7
Busy
If set to ‘1’ indicates ADC is busy converting.
D6
LHIGH
If set to ‘1’ indicates a measured Local Temperature Higher than Local High set
point (High Limit).
D5
LLOW
If set to ‘1’ indicates a measured Local Temperature lower than Local Low set
point (Low Limit).
D4
RHIGH
If set to ‘1’ indicates a measured Remote Temperature higher than Remote
High set point (High Limit).
D3
RLOW
If set to ‘1’ indicates a measured Remote Temperature lower than Remote Low
set point (Low Limit).
D2
OPEN
If set to ‘1’ indicates a Remote Diode disconnect.
D1
RCRIT
If set to ‘1’ indicates a Remote Critical Temperature alarm.
D0
LCRIT
If set to ‘1’ indicates a Local Critical Temperature alarm.
- 13 -
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
8.4
Configuration Register (C)
BIT
FLAG NAME
DESCRIPTION
D7
ALERT mask If set to ‘1’ ALERT interrupts are masked.
D6
Reserved
Reserved
D5
0
No definition and can be read out to 0.
D4
Remote
T _ CRIT _ A
mask
If set to ‘1’ Remote T _ CRIT _ A interrupts are masked.
D3
0
No definition and can be read out to 0.
D2
Local
T _ CRIT _ A
mask
If set to ‘1’ Local T _ CRIT _ A interrupts are masked.
D1
0
No definition and can be read out to 0.
D0
Reserved
Reserved
8.5
T_CRIT Hysteresis Register (TH)
REGISTER: TH
BIT
VALUE
MAXIMUM VALUE: 31
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
16
8
4
2
1
Unit: ℃
8.6
Conversion Rate Register (CR)
REGISTER: CR
BIT
(DECIMAL)
0
1
DEFAULT CONVERSION RATE: 16HZ
2
3
4
5
CONVERSION 31.25 mHz 62.5 mHz 125 mHz 250 mHz 500 Hz
RATE
(32 Sec) (16 Sec) (8 Sec) (4 Sec) (2 Sec)
BIT
(DECIMAL)
CONVERSION
RATE
7
1 Hz
2 Hz
4 Hz
(1 Sec) (0.5 Sec) (0.25 Sec)
8
9
10-255
8 Hz
(125
mSec)
16 Hz
(62.5
mSec)
Reserve
- 14 -
6
Publication Release Date: March 06
Revision 0.7
W83L771W/G
8.7
Filter and Alert Configure Register (RDTF)
BIT
COMMAND
DESCRIPTION
0
Filter Level
No definition and can be read out to 0.
=: No Filter Selected
= or : Filter Level 1 Selected
=: Filter Level 2 Selected
D0
ALERT Configure
If set to ‘1’ ALERT Output Comparator mode is enabled.
- 15 -
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
9. ELECTRICAL CHARACTERISTIC
9.1
Absolute Maximum Ratings
PARAMETER
RATING
Power Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
UNIT
3.3
3 to 5.5
0 to + 70
-50 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 = 3.3V ± 10%, VSS = 0V)
PARAMETER
SYM.
MIN.
TYP.
I/O12ts - TTL level bi-directional pin with source-sink
level input
Input Low Threshold Voltage
Vt0.5
0.8
Input High Threshold Voltage
Vt+
1.6
2.0
Hysteresis
VTH
0.5
1.2
Output Low Voltage
VOL
Output High Voltage
VOH
2.4
Input High Leakage
ILIH
Input Low Leakage
ILIL
MAX.
UNIT
CONDITIONS
capability of 12 mA and schmitt-trigger
1.1
2.4
V
V
V
V
V
μA
μA
VDD = 3.3 V
VDD = 3.3 V
VDD = 3.3 V
IOL = 12 mA
IOH = - 12 mA
VIN = VDD
VIN = 0V
V
IOL = 12 mA
0.4
V
IOL = 48 mA
0.4
+10
-10
OD12 - Open-drain output pin with sink capability of 12 mA
Output Low Voltage
VOL
0.4
OD48 - Open-drain output pin with sink capability of 48 mA
Output Low Voltage
INts
VOL
- TTL level Schmitt-triggered input pin
Input Low Threshold Voltage
Vt-
0.5
0.8
1.1
V
VDD = 3.3 V
Input High Threshold Voltage
Vt+
1.6
2.0
2.4
V
VDD = 3.3 V
Hysteresis
VTH
0.5
1.2
V
VDD = 3.3 V
Input High Leakage
ILIH
+10
μA
VIN = VDD
Input Low Leakage
ILIL
-10
μA
VIN = 0 V
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Publication Release Date: March 06
Revision 0.7
W83L771W/G
9.3
AC Characteristics
t SCL
t
tR
R
SCL
t HD;SDA
SDA IN
t
t SU;STO
SU;DAT
VALID DATA
t HD;DAT
SDA OUT
Serial Bus Timing Diagra
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
SYMBOL
t-SCL
tHD;SDA
tSU;STO
tSU;DAT
tHD;DAT
tR
tF
- 17 -
MIN.
MAX.
10
4.7
4.7
120
5
1.0
300
UNIT
uS
uS
uS
nS
nS
uS
nS
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
10. THE TOP MARKING
The top marking of W83L771W
W83L771W
2826978Y-61
449OB
Left: Winbond logo
1st line: Winbond logo and the type number: W83L771W
2nd line: Tracking code 2 826978Y-61
3rd line: Tracking code 449 O B
449: packages made in '04, week 49
O: assembly house ID; A means ASE, S means SPIL, O means OSE
B: IC revision
The top marking of W83L771G
W83L771G
2826978Y-61
449OB
Left: Winbond logo
1st line: Winbond logo and the type number: W83L771G
2nd line: Tracking code 2 826978Y-61
3rd line: Tracking code 449 O B
449: packages made in '04, week 49
O: assembly house ID; A means ASE, S means SPIL, O means OSE
B: IC revision
- 18 -
Publication Release Date: March 06
Revision 0.7
W83L771W/G
11. PACKAGE SPECIFICATION
TSSOP 8L 3X3 MM^2
- 19 -
Publication Release Date: March 31, 2006
Revision 0.7
W83L771W/G
12. APPLICATION CIRCUITS
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
owner.
- 20 -
Publication Release Date: March 06
Revision 0.7
W83L771W/G
Important Notice
Winbond 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. Further more, Winbond products are not intended for applications wherein failure
of Winbond products could result or lead to a situation wherein personal injury, death or
severe property or environmental damage could occur.
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.
- 21 -
Publication Release Date: March 31, 2006
Revision 0.7
