2 N.A. 10/25/04 0.5 N.A. First published preliminary version.
3 N.A. 12/20/04 0.51 N.A.
4 12,13,14 1/09/06 0.52 N.A. Modified the application circuit.
5
6
7
8
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.
Version
on Web
Main Contents
All of the versions before 0.50 are for internal
use.
Add part no of W8303AG with Pb-free
package.
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.
Page 3
W83303AD/W83303AG
1. GENERAL FUNCTION DESCRIPTION
y Provides Voltages
− 5V Active/Sleep (5VDUAL)
/5V
− Programmable 5V
− 3.3V Active/Sleep (3.3VDUAL)
− Programmable Dual-Channels RAM Active/Sleep (V
− Auto-detective 2.6V
− Two Programmable Linear Regulators and one Linear Regulator Ranging 1.2V~5.00V for
Over-Clocking Application
− 1.2V VCCVID for Intel® P4 CPU or FSB_VTT for Grandsdale
− 1.5V VPCI Voltage
y Supports VRGOOD signal for Intel® P4 CPU Power Good Control
y Supports RSMRST# Signal Control
y Provides Signals for ATX Power Supply PS_ON# Control
y I2C Interface
y Selectable I2C Address
y Internal Charge Pump Support Up to 9.5VSB
y Drive All N-Channel MOSFET
y Soft Start
y Under-Voltage Monitoring for 3VDUAL, VPCI and VRAM Channels
DL
/5VCC for USB Devices(5VUSB)
STR
STR
/1.8V
for DDR/DDRII Voltage
STR
) for DDR
STR
Publication Release Date: Jan. 9, 2006
- 1 - Revision 0.52
Page 4
2. W83303AD/AG PIN-OUT
LR1_DRV
VCC
36 35 34333231302928272625
VPCI_SEN
VPCI_DRV
AGND
CHRPMP
C2
W83303AD/W83303AG
C1
5VSB
1.2V_DRV
1.2V_SEN
VRGOOD
LR1_SEN
LR2_DRV
LR2_SEN
DDRDET#
FAULT#
PS_IN#
PW_BUT#
PS_OUT#
DGND
PWR_OK
A0
D5VSB
37
38
39
RSMRST#
PWM_MODE
LR3_SEN
LR3_DR V
AGND
40
41
42
43
44
45
46
47
48
1 2 3456789101112
S3#
W83303AD/AG
S5#
I2C_CLK
I2C_DATA
5VUSB
5VSBDRV
AGND
24
VRAM_DRV1
23
I_SEN1
22
VRAM_SEN
21
VRAM_DRV2
20
I_SEN2
19
5VSB
18
ISET
17
SS
16
VCC3
15
3.3VSB_DRV
14
3.3V_SEN
13
3V/5VDRV
- 2 -
Page 5
W83303AD/W83303AG
A
3. PIN DESCRIPTIONS
NO NAME I/O FUNCTION DESCRIPTION
1
2 S5# I
S3# I
SYSTEM ACPI CONTROL SIGNALS
3 I2C_DATA I/O
4 I2C_CLK I
5 RSMRST# OD
6 PWM_MODE I
7 LR3_SEN I
8 LR3_DRV O
9 AGND P Power ground
10 5VUSB O
11 5VSBDRV O
12 5VDRV O
13 3.3V_SEN I
14 3.3VSB_DRV O
15 VCC3 P Power 3.3Vcc
16 SS I
17 I
SET
I2C Interface, and the default ID value are defined as 5CH (0101 110X) as
well as 5EH (0101 111X), and X is used to control read/write.
A signal to indicate 3VDUAL power status. The signal will be issued after
82ms delay when the level of 3VDUAL higher than 2.8V
0=Internal RAM for Linear Mode;
1= external RAM for PWM Mode
Linear Regulators ranging form 1.2V to 5V and can be adjusted by
external resistors
Power switch for USB devises provides a programmable Voltage
(5VDUAL/5VSTR/ 5VCC) for USB devices. It can be set by register CR00
3.3VDUAL Voltage regulator
Soft-Start pin. Attach a capacitor to this pin to determine the soft-start rate;
and the slew-rate of SS is set by adjust the capacity of the external
capacitor.
ttached a specific external resistor to determine the internal reference
I
current.
18 5VSB P Power Pin
19 I_SEN2 I
20 VRAM_DRV2 O
21 VRAM_SEN I
22 I_SEN1 I
23 VRAM_DRV1 O
24 AGND P Power ground
25 VRGOOD OD
2 channels of V
design to balance the current on the channels. In which I_SEN1 & I_SEN2
pins should be connected together to 5VSB or 3VDUAL if only one
channel used. The DDR or DDRII determine by DDRDET#. If DDRDET#
=0 VRAM=DDR(2.6V) ; DDRDET#=1 VRAM=DDRII(1.8V).
The signal is applied for the Intel® Northwood CPU using; it’s a signal to
declare the CPU VID status.
output for DDR or DDRII with internal current sharing
STR
Publication Release Date: Jan. 9, 2006
- 3 - Revision 0.52
Page 6
W83303AD/W83303AG
Pin Descriptions, continued
NO NAME I/O FUNCTION DESCRIPTION
26 1.2V_SEN I
27 1.2V_DRV O
28 5VSB P Power Pin
29 C1 I
30 C2 I
31 CHRPMP P
1.2V
Charge pump pins. It supports 10mA driving current and insures output
voltage 9V or above.
voltage regulator for Intel® P4 CPU application.
CC
32 AGND P
33 VPCI_DRV O
34 VPCI_SEN I
35 VCC P Power pin
36 LR1_DRV O
37 LR1_SEN I
38 LR2_DRV O
39 LR2_SEN I
40 DDRDET# I
41 FAULT# I
42 PS_IN# Power on signal. Low active.
43 PW_BUT# I System PW_BUT for power sequence monitoring.
44 PS_OUT# O Pin to control ATX power supply.
45 DGND P Power ground.
Power pin
1.5V Voltage Regulator for PCI Express. If this power plane won’t be
used, the VPCI_SEN must be connected to 3VDUAL to avoid the fault
trigger of LUV event.
Linear Regulators ranging form 1.2V to 5V and can be adjusted by
external resistors
A signal to indicate type of DDRRAM that plugged- in; low means 2.6V for
DDR and high means 1.8V for DDRII.
Fault event be monitored; the chip shut the ATX power supply down
directly by control the PS_ON# signal as long as the fault events are
triggered.
46 PWR_OK I Power good input signal of ATX power supply.
47 A0 I I2C address selecting pin.
48 D5VSB P Power pin.
*VRGOOD & TYPEDET# can endure 0-12V level voltage.
- 4 -
Page 7
W83303AD/W83303AG
4. INTERNAL BLOCK DIAGRAM
C1 CHRPMP S5#
PS_IN#
FAULT#
PS_OUT#
PW_BUT#
Reset
Integrated
Circuit
C2
Charge
Pump
S3#
Control
Circuit
PWR_OK
DDRDET#
RSMRST#
3.3V_SEN
3.3VDL
3.3V_DRV
VRGOOD
1.2V_DRV
1.2V_SEN
ISET
VPCI_DRV
VPCI_SEN
SS
LR_SEN1
LR_DRV1
1.2V
VCCVID
Soft Start
Reference
Current
PCI express 1.5V
LR_SEN2
LR_DRV2
Control
Register
LR_SEN3
1.20V
LR_DRV3
5VDL
5VUSB
VRAM
I2C
5VDRV
5VSBDRV
5VUSB
VRAM_DRV1
I_SEN11
VRAM_SEN1
VRAM_DRV2
I_SEN2
EXT_RAM
I2C_CLK
I2C_DATA
A0
Publication Release Date: Jan. 9, 2006
- 5 - Revision 0.52
Page 8
W83303AD/W83303AG
5. I2C COMMUNICATION PROTOCOL
The W83303AD/AG serial protocol accepts byte write, byte read operation from the controller. For the
byte write and byte read operations, the system controller can access individual indexed bytes. The
byte write and byte read protocol is outlined in following table. Besides, the slave receiver address is
0101 1110(5Eh).
Bit7 is reserved for signal DDRDET# Setting (Dynamic detect)
DDRDET#=H bit7=1 DDRII type, DDRDET#=L bit7=0 DDRI type.
Bit3,2, 1 and 0 are applied for DDRRAM output adjusting.
Line: Part No W83303AD, W83303AG (Pb-free package)
rd
3
Line: Wafer production serial number
th
4
Line: tracking code 410GBRA
410
:Date code, 410 means package was made in ’04 week 10
:Assembly ID, G means GR, A means ASE…etc.
G
:Chip Version, A means version A, B means version B
B
:Winbond internal use
RA
inbond
W83303AD
214658302
410GBR
inbond
W83303AG
214658302
410GBR
W83303AD/W83303AG
Publication Release Date: Jan. 9, 2006
- 15 - Revision 0.52
Page 18
11. PACKAGE DIMENSION
H
H
A
Y
A A
36
W83303AD/W83303AG
D
A
A
25
E
SEATING PLANE
Controlling dimension: Millimeters
Symbol
37
48
24
1
Dimension in inch Dimension in mm
Min
Nom
MaxMax
12
Mi
13
L1
No
1
2
b
D
E
e
H
D
H
E
L
1
0
0.002
0.053
0.006
0.004
0.272
0.272
0.014
0.350
0.018
0.0040.0060.15
0.0570.055
0.008
0.0060.15
0.276
0.276
0.020
0.354
0.024
0.039
0.010
0.008
0.280
0.280
0.026
0.030
0.004
1.35
0.15
0.10
6.90
6.90
0.35
8.90
8.900.358
0.100.05
1.40
0.20
7.00
7.00
0.50
0.600.45
1.00
1.45
0.25
0.20
7.10
0.65
9.10 9.00
0.75
0.10
Page 19
W83303AD/W83303AG
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.
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.
Publication Release Date: Jan. 9, 2006
- 17 - Revision 0.52
Page 20
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