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參數資料
| 型號： | MCP9808T-E/MS |
| 廠商： | Microchip Technology |
| 文件頁數： | 11/52頁 |
| 文件大小： | 1085K |
| 描述： | IC TEMP SENSOR DGTL I2C 8MSOP |
| 標準包裝： | 2,500 |
| 功能： | 溫度監控系統（傳感器） |
| 傳感器類型： | 內部 |
| 感應溫度： | -40°C ~ 125°C |
| 精確度： | ±1°C |
| 拓撲： | ADC（三角積分型），寄存器庫 |
| 輸出類型： | 2 線串行，I²C?/SMBUS? |
| 輸出警報： | 是 |
| 輸出風扇： | 是 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-MSOP |
| 包裝： | 帶卷 (TR) |
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?2011 Microchip Technology Inc.
DS25095A-page 11
MCP9808
3.0
PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
3.1
Serial Data Line (SDA)
SDA is a bidirectional input/output pin, used to serially
transmit data to/from the host controller. This pin
requires a pull-up resistor. (See Section 4.0 Serial
Communication .)
3.2
Serial Clock Line (SCL)
The SCL is a clock input pin. All communication and
timing is relative to the signal on this pin. The clock is
generated by the host or master controller on the bus.
(See Section 4.0 Serial Communication .)
3.3
Temperature Alert, Open-Drain
Output (Alert)
The MCP9808 temperature Alert output pin is an
open-drain output. The device outputs a signal when the
ambient temperature goes beyond the user-programmed
temperature limit. (See Section 5.2.3 Alert Output
Configuration ).
3.4
Ground Pin (GND)
The GND pin is the system ground pin.
3.5
Address Pins (A0, A1, A2)
These pins are device address input pins.
The address pins correspond to the Least Significant
bits (LSbs) of the address bits and the Most Significant
bits (MSbs): A6, A5, A4, A3. This is illustrated in
Table 3-2.
3.6
Power Pin (V
DD
)
V
DD
is the power pin. The operating voltage range, as
specified in the DC electrical specification table, is
applied on this pin.
3.7
Exposed Thermal Pad (EP)
There is an internal electrical connection between the
Exposed Thermal Pad (EP) and the GND pin. The EP
may be connected to the system ground on the Printed
Circuit Board (PCB).
TABLE 3-1:
PIN FUNCTION TABLE
DFN
MSOP
Symbol
Pin Function
1
1
SDA
Serial Data Line
2
2
SCL
Serial Clock Line
3
3
Alert
Temperature Alert Output
4
4
GND
Ground
5
5
A2
Slave Address
6
6
A1
Slave Address
7
7
A0
Slave Address
8
8
V
DD
Power Pin
9
EP
Exposed Thermal Pad (EP); must be connected to GND
TABLE 3-2:
MCP9808 ADDRESS BYTE
Device
Address Code
Slave
Address
A6 A5 A4 A3 A2 A1 A0
MCP9808
0
0
1
1 x
(1)
x
x
MCP9808
(2)
1
0
0
1
x
x
x
Note 1: User-selectable address is shown by x.
A2, A1 and A0 must match the
corresponding device pin configuration.
2: Contact factory for this address code.
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