参数资料
型号: W83303AG
厂商: Nuvoton Technology Corporation of America
文件页数: 15/19页
文件大小: 0K
描述: IC ACPI CONTROLLER 48-LQFP
标准包装: 250
控制器类型: ACPI 控制器
接口: I²C
电源电压: 4.75 V ~ 5.25 V
电流 - 电源: 1mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP
包装: 托盘
W83303AD/W83303AG
Publication Release Date: Jan. 9, 2006
- 3 -
Revision 0.52
3.
PIN DESCRIPTIONS
NO
NAME
I/O
FUNCTION DESCRIPTION
1
S3#
I
2
S5#
I
SYSTEM ACPI CONTROL SIGNALS
3
I2C_DATA
I/O
4
I2C_CLK
I
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.
5
RSMRST#
OD
A signal to indicate 3VDUAL power status. The signal will be issued after
82ms delay when the level of 3VDUAL higher than 2.8V
6
PWM_MODE
I
0=Internal RAM for Linear Mode;
1= external RAM for PWM Mode
7
LR3_SEN
I
8
LR3_DRV
O
Linear Regulators ranging form 1.2V to 5V and can be adjusted by
external resistors
9
AGND
P
Power ground
10
5VUSB
O
11
5VSBDRV
O
12
5VDRV
O
Power switch for USB devises provides a programmable Voltage
(5VDUAL/5VSTR/ 5VCC) for USB devices. It can be set by register CR00
13
3.3V_SEN
I
14
3.3VSB_DRV
O
3.3VDUAL Voltage regulator
15
VCC3
P
Power 3.3Vcc
16
SS
I
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.
17
ISET
I
Attached a specific external resistor to determine the internal reference
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
2 channels of VSTR output for DDR or DDRII with internal current sharing
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).
24
AGND
P
Power ground
25
VRGOOD
OD
The signal is applied for the Intel Northwood CPU using; it’s a signal to
declare the CPU VID status.
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