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參數(shù)資料
| 型號： | SX1509BULTRT |
| 廠商： | Semtech |
| 文件頁數(shù)： | 7/41頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC GPIO EXPANDER I2C 16CH 28QFN |
| 特色產(chǎn)品： | SX1508/SX1509 GPIO Expanders |
| 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： | 1.2 V ~ 3.6 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 |
| 包括： | LED 驅(qū)動器 / 小鍵盤引擎 |
| 其它名稱： | SX1509IULDKR SX1509IULDKR-ND |
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ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 30
th Oct. 2009
15
www.semtech.com
SX1507/SX1508/SX1509
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
Figure 8 - 2-Wire Serial Interface, Write Operation
When successive register data (WD1...WDn) is supplied by the master, the register address can be
automatically incremented or kept fixed depending on the setting programmed in RegMisc.
1
Figure 9 – Example: Write RegData Register
4.5.2
READ
After the start condition [S], the slave address (SA) is sent, followed by an eighth bit (‘0’) indicating a Write. The
slave then Acknowledges [A] that it is being addressed, and the Master responds with an 8 bit Data consisting of
the Register Address (RA). The slave Acknowledges [A] and the master sends the Repeated Start Condition
[Sr]. Once again, the slave address (SA) is sent, followed by an eighth bit (‘1’) indicating a Read.
The slave responds with an Acknowledge [A] and the read Data byte (RD0). If the master needs to read more
data it will acknowledge [A] and the slave will send the next read byte (RD1). This sequence can be repeated
until the master terminates with a NACK [N] followed by a stop [P].
Figure 10 - 2-Wire Serial Interface, Read Operation
When successive register data (RD1...RDn) is read by the master, the register address will be automatically
incremented or kept fixed depending on the setting programmed in RegMisc.
4.6
I/O Banks
4.6.1
Input Debouncer
Each input can be individually debounced by setting corresponding bits in RegDebounce register. At power up
the debounce function is disabled. After enabling the debouncer, the change of the input value is accepted only if
the input value is identical at two consecutive sampling times.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SX1509EVK | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Worlds Lowest Voltage Level |
| SX1509IULTRT | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Worlds Lowest Voltage Level |
| SX1509QB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine |
| SX1509QBIULTRT | 制造商:Semtech Corporation 功能描述:Voltage Level Shifting GPIO with LED Driver 28-Pin QFN-UT EP T/R 制造商:Semtech Corporation 功能描述:IC ESD/EMI PROT DIODE 制造商:Semtech Corporation 功能描述:16 CHAN LOW VOLT GPIO + PWM |
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