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參數(shù)資料
| 型號： | SX1506I091TRT |
| 廠商： | Semtech |
| 文件頁數(shù)： | 19/31頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC GPIO EXP I2C 16CH 28UTQFN |
| 標準包裝： | 1 |
| 接口： | I²C |
| 輸入/輸出數(shù)： | 16 |
| 中斷輸出： | 是 |
| 頻率 - 時鐘： | 400kHz |
| 電源電壓： | 2.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-UFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 28-QFN-UT（4x4） |
| 包裝： | 標準包裝 |
| 其它名稱： | SX1506I091DKR |
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WIRELESS & SENSING
Rev 3 – 16
th May 2012
www.semtech.com
26
SX1504/SX1505/SX1506
4/8/16 Channel GPIO
6
APPLICATION INFORMATION
6.1
Typical Application Circuit
Figure 12 - Typical Application Schematic
6.2
Typical LED Operation
Typical LED operation is described below. The LED is usually connected to a high voltage (VBAT) to take
advantage of the high sink current of the I/O and to accommodate high LED threshold voltages (VLED).
VCCx
IOx
VBAT
VCCx
VLED
*
*LED colour/technology dependent
SX1504/5/6
IOL
R
Figure 13 – Typical LED Operation
Important:
VCCx must exceed VBAT-VLED (VCCx = VBAT is recommended) else the LED will never be
completely OFF
R must be calculated for IOL not to exceed its max spec (Cf. Table 5)
6.2.1
LED ON/OFF Control
RegDir[x]
RegData[x]
LED ON
“0”
LED OFF
“0” (Output)
“1”
Table 17 – LED ON/OFF Control
VDDM
NRESET
SCL
SDA
ADDR
GND
VCC1
I/O[0]
I/O[1]
I/O[2]
I/O[3]
NINT
I/O[4]
I/O[5]
I/O[6]
I/O[7]
VCC2
SX1505
SCL
SDA
I/O
3.3V
2.5V
5.5V
5V
Optional (depends
on the application)
5V
Host
controller
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