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參數(shù)資料
| 型號： | SX1501I087TRT |
| 廠商： | Semtech |
| 文件頁數(shù)： | 9/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC GPIO EXPANDER I2C 4CH 20QFN |
| 產(chǎn)品培訓(xùn)模塊： | Low Voltage GPIO Expander Family |
| 標準包裝： | 1 |
| 接口： | I²C |
| 輸入/輸出數(shù)： | 4 |
| 中斷輸出： | 是 |
| 頻率 - 時鐘： | 400kHz |
| 電源電壓： | 1.2 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-UFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 20-QFN-UT（3x3） |
| 包裝： | 標準包裝 |
| 產(chǎn)品目錄頁面： | 1359 (CN2011-ZH PDF) |
| 其它名稱： | SX1501I087DKR |
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WIRELESS & SENSING
Rev 11 – 16
th May 2012
www.semtech.com
17
SX1501/SX1502/SX1503
4/8/16 Channel Low Voltage GPIO
Master operations
SX1501, SX1502 or SX1503 operations (Slave)
S: Start Condition
Slave Address: 7 bit
W: Write = ‘0’
Register Address: 8 bit
R: Read = ‘1’
Data: 8 bit
A: Acknowledge (sent by slave)
NACK: Non-Acknowledge (sent by master)
Sr: Repeated Start Condition
P: Stop condition
Figure 11 - 2-Wire Serial Interface, Read – Stop Separated Mode Operation
4.6
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).
SX1503 also allows the interrupt to be cleared automatically when reading RegData register (Cf. RegAdvanced)
Example: We want to detect rising edge of I/O[1] on SX1502 (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”
4.7
Programmable Logic Functions (PLD)
The SX1501, SX1502 and SX1503 offer a unique fully programmable logic functions like a PLD to give more
flexibility and reduce external logic gates used for standard applications.
Since the whole truth table is fully programmable, the SX1501, SX1502, and SX1503 can implement
combinatory functions ranging from the basic AND/OR gates to the most complicated ones with up to four 3-to1
PLDs or two 3-to-2 PLDs which can also be externally cascaded if needed.
In all cases, any IO not configured for PLD functionality retains its GPIO functionality while I/Os used by the PLD
have their direction automatically set accordingly.
Please note that while RegDir corresponding bits are ignored for PLD operation they may still be set to input to
access unused PLD inputs as normal GPI (PLD truth table can define some inputs to have no effect on PLD
output) and/or generate interrupt based on any of the PLD inputs or outputs bits.
4.7.1
SX1501
The SX1501 I/Os can be configured to provide any combinational 2-to-1 logic function using I/O[0-2] whilst
retaining GPIO capability on I/O[3] OR provide a combinational 3-to-1 decode function using all 4 I/O ports.
RegPLDMode
SX1501 I/Os
1:0
3
2
1
0
00
GPIO
01
GPIO
PLD OUT PLD IN
PLD IN
10
PLD OUT PLD IN
PLD IN
Table 8 – SX1501 PLD Modes Settings
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SX1501I088TRT | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:4/8/16 Channel Low Voltage GPIO |
| SX1502 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:4/8/16 Channel Low Voltage GPIO with NINT and NRESET |
| SX1502EVK | 制造商:Semtech Corporation 功能描述:SX1502EVK Series 8 Channel 400 kHz 3.3 V I2C Low Voltage GPIO Evaluation Kit 制造商:Semtech Corporation 功能描述:Evaluation Board For 4,8,16 Channel Low Voltage GPIO |
| SX1502I087TRT | 功能描述:IC GPIO EXPANDER I2C 8CH 20QFN RoHS:是 類別:集成電路 (IC) >> 接口 - I/O 擴展器 系列:- 產(chǎn)品培訓(xùn)模塊:I²C Bus Fundamentals 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 接口:I²C，SM 總線 輸入/輸出數(shù):16 中斷輸出:是 頻率 - 時鐘:400kHz 電源電壓:2.3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:24-TSSOP 包裝:Digi-Reel® 包括:POR 產(chǎn)品目錄頁面:826 (CN2011-ZH PDF) 配用:568-4002-ND - DEMO BOARD I2C 其它名稱:568-1058-6 |
| SX1502I088TRT | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:4/8/16 Channel Low Voltage GPIO |
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