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參數(shù)資料
| 型號： | DS4550E+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 15/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC I/O EXPANDER I2C 9B 20TSSOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 接口： | I²C，JTAG |
| 輸入/輸出數(shù)： | 9 |
| 中斷輸出： | 無 |
| 頻率 - 時鐘： | 400kHz |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 20-TSSOP |
| 包裝： | 帶卷 (TR) |
| 包括： | EEPROM |
DS4550
I2C and JTAG Nonvolatile 9-Bit I/O
Expander Plus Memory
6
_____________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1
I/O_0
Input/Output 0. Bidirectional I/O pin.
2
I/O_1
Input/Output 1. Bidirectional I/O pin.
3
I/O_2
Input/Output 2. Bidirectional I/O pin.
4
I/O_3
Input/Output 3. Bidirectional I/O pin.
5
I/O_4
Input/Output 4. Bidirectional I/O pin.
6A0
I
2C Address Input. Inputs A0, A1, and A2 determine the I2C slave address of the device.
7A1
I
2C Address Input. Inputs A0, A1, and A2 determine the I2C slave address of the device.
8
TCK
JTAG Test Clock. This signal is used to shift data into TDI on the rising edge and out of TDO on the
falling edge.
9
TMS
JTAG Test Mode Select. This pin is sampled on the rising edge of TCK and used to place the TAP
into the various defined JTAG states. This pin has an internal pullup resistor.
10
VCC
Power Supply Voltage
11
SDA
I
2C Serial Data Open-Drain Input/Output
12
SCL
I
2C Serial Clock Input
13
TDI
JTAG Test Data Input. Test instructions and data are clocked into this pin on the rising edge of TCK.
This pin has an internal pullup resistor.
14
TDO
JTAG Test Data Output. Test instructions and data are clocked out of this pin on the falling edge of
TCK. If not used, this pin should be left open circuit.
15
A2
I
2C Address Input. Inputs A0, A1, and A2 determine the I2C slave address of the device.
16
I/O_5
Input/Output 5. Bidirectional I/O pin.
17
I/O_6
Input/Output 6. Bidirectional I/O pin.
18
I/O_7
Input/Output 7. Bidirectional I/O pin.
19
I/O_8
Input/Output 8. Bidirectional I/O pin.
20
GND
Ground
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