參數資料
| 型號： | SX1509BULTRT |
| 廠商： | Semtech |
| 文件頁數： | 10/41頁 |
| 文件大小： | 0K |
| 描述： | IC GPIO EXPANDER I2C 16CH 28QFN |
| 特色產品： | SX1508/SX1509 GPIO Expanders |
| 標準包裝： | 1 |
| 接口： | I²C |
| 輸入/輸出數： | 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 |
| 供應商設備封裝： | 28-QFN-UT（4x4） |
| 包裝： | 標準包裝 |
| 包括： | LED 驅動器 / 小鍵盤引擎 |
| 其它名稱： | SX1509IULDKR SX1509IULDKR-ND |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 30
th Oct. 2009
18
www.semtech.com
SX1507/SX1508/SX1509
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
4.6.4
Polarity Inverter
Each IO’s polarity can be individually inverted by setting corresponding bit in RegPolarity register. Please note
that polarity inversion can also be combined with level shifting feature.
4.7
Interrupt (NINT)
At start-up, the transition detection logic is reset, and NINT is released to a high-impedance state. The interrupt
mask register is set to 0xFF, disabling the interrupt output for transitions on all I/O ports. The transition flags are
cleared to indicate no data changes.
An interrupt NINT can be generated on any programmed combination of I/Os rising and/or falling edges through
the RegInterruptMask and RegSense registers.
If needed, the I/Os which triggered the interrupt can then be identified by reading RegInterruptSource register.
When NINT is low (i.e. interrupt occurred), it can be reset back high (i.e. cleared) by writing 0xFF in
RegInterruptSource (this will also clear corresponding bits in RegEventStatus register).
The interrupt can also be cleared automatically when reading RegData register (Cf. RegMisc)
Example: We want to detect rising edge of I/O[1] on SX1508 (NINT will go low).
1.
We enable interrupt on I/O[1] in RegInterruptMask
RegInterruptMask =“XXXXXX0X”
2.
We set edge sense for I/O[1] in RegSense
RegSenseLow =“XXXX01XX”
Please note that independently from the “user defined” process described above the keypad engine, when
enabled, also uses NINT to indicate a key press.
Hence we have NINT = “user defined condition occurred” OR “keypad engine condition occurred”.
4.8
Clock Management
A main oscillator clock fOSC is needed by the LED driver, keypad engine and debounce features.
Clock management block is illustrated in figure below.
OSCIO
Clock
Mgmt
Internal
Oscillator
External
Clock
fOSC
Div
Figure 14 – Clock Management Overview
The block is configured in register RegClock (Cf §5 for more detailed information):
Selection of internal clock source: none (OFF) or internal oscillator or external clock input from OSCIN.
Definition of OSCIO pin function (OSCIN or OSCOUT)
OSCOUT frequency setting (sub-multiple of fOSC)
Please note that if needed the OSCOUT feature can be used as an additional GPO (Cf. RegClock)
4.9
LED Driver
4.9.1
Overview
Every IO has its own independent LED driver to perform intensity control, blinking and fading operation. (Cf §6.2
for typical LED connection)
Please note that while all I/Os can perform intensity control (PWM) only some of them additionally include
blinking and breathing features (Cf pin description §1)
The LED drivers of all I/Os share the same clock ClkX configurable in RegMisc[6:4]. Please note that for power
consumption reasons ClkX is OFF by default.
相關PDF資料 |
PDF描述 |
|---|---|
| SX8722I070TRLF | IC ZOOMING ADC 10BIT 16CH 44MLPQ |
| SX8723CWLTDT | IC DAS ADC 16BIT I2C/SRL |
| SX8723E083TDT | IC DAS PRESS/TEMP SENS 12MLPD |
| SX8724CWLTDT | IC DAS ADC 16BIT I2C/SRL |
| SX8724E082TDT | IC DAS PRESS/TEMP SENS 16MLPQ |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| SX150A | 功能描述:板上安裝壓力/力傳感器 0 to 150psia BUTTON UNAMP ABSOLUTE 12V RoHS:否 制造商:Honeywell 工作壓力:0 bar to 4 bar 壓力類型:Gage 準確性:+ / - 0.25 % 輸出類型:Digital 安裝風格:Through Hole 工作電源電壓:5 V 封裝 / 箱體:SIP 端口類型:Dual Radial Barbed, Same sides |
發(fā)布緊急采購，3分鐘左右您將得到回復。