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參數資料
| 型號： | W83783S |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 模擬信號調理 |
| 英文描述： | MONITORING IC |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | SOP-24 |
| 文件頁數： | 11/57頁 |
| 文件大小： | 312K |
| 代理商： | W83783S |
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W83783S
Preliminary
Publication Release Date: April 1999
Revision 0.55
- 6 -
6. FUNCTIONAL DESCRIPTION
6.1 General Description
The W83783S provides at most 6 analog positive inputs, 3 fan speed monitors, 2 sets for fan PWM
(Pulse Width Modulation) control, 2 thermal inputs from remote thermistors or 2N3904 transistors or
Pentium
TM
II (Deschutes) thermal diode outputs and beep function output when the monitor value
exceed the set limit value including voltage, temperature, or fan counter. When start the monitor
function on the chip, the watch dog machine monitor every function and store the value to registers. If
the monitor value exceeds the limit value, the interrupt status will be set to 1.
6.2 Access Interface
The W83783S provides I
2
C Serial Bus to read/write internal reigsters. In the W83783S there are two
serial bus address. The first address defined at CR[48h] can read/write all registers excluding Bank 1
temperature sensor registers and the address default value is 0101101. The second address defined
at CR[4Ah] bit2-0 only read/write temperature sensor 1 registers and the address default value is
1001001.
6.2.1 The first serial bus access timing are shown as follow:
(a) Serial bus write to internal address register followed by the data byte
0
Start By
0
1
0
1
1
0
1
D7
D6
D5
D4
D3
D2
D1
D0
Ack
by
R/W
Ack
by
SCL
SDA
D7
D6
D5
D4
D3
D2
D1
D0
Ack
by
Stop
by
SCL
SDA (Continued)
7
8
0
7
8
0
7
8
Frame 2
Internal Index Register Byte
(Continued)
Frame 3
Data Byte
Frame 1
Serial Bus Address Byte
Figure 1. Serial Bus Write to Internal Address Register followed by the Data Byte
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| W83787IF | WINBOND I/O WITH SERIAL-INFRARED SUPPORT |
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相關代理商/技術參數 |
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| W83783S_04 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Monitoring IC |
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