SX1501I087TRT Semtech, SX1501I087TRT Datasheet - Page 22

• Manufacturer Part Number: SX1501I087TRT
• Description: IC GPIO EXPANDER I2C 4CH 20QFN
• Manufacturer: Semtech

Specifications of SX1501I087TRT

• Interface: I²C
• Number Of I /o: 4
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 1.2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SX1501I087TR

Addr
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x10
0x11
0x12
0x13
ADVANCED COMMUNICATIONS & SENSING
Rev 9 – 5
Name
RegPullUp
RegPullDown
Reserved
RegInterruptMask
RegSenseHigh
RegSenseLow
RegInterruptSource
RegEventStatus
RegPLDMode
RegPLDTable0
RegPLDTable1
RegPLDTable2
th
August 2010
Default
0xXX
0xFF
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Bits
7:0
7:0
7:0
7:0
7:6
5:4
3:2
1:0
7:6
5:4
3:2
1:0
7:0
7:0
7:6
5:4
3:2
1:0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
Description
Enables the pull-up for each IO
0 : Pull-up is disabled
1 : Pull-up is enabled
Enables the pull-down for each IO
0 : Pull-down is disabled
1 : Pull-down is enabled
Unused
Configures which [input-configured] IO will trigger an interrupt on NINT pin
0 : An event on this IO will trigger an interrupt
1 : An event on this IO will NOT trigger an interrupt
Edge sensitivity of I/O[7]
Edge sensitivity of I/O[6]
Edge sensitivity of I/O[5]
Edge sensitivity of I/O[4]
Edge sensitivity of I/O[3]
Edge sensitivity of I/O[2]
Edge sensitivity of I/O[1]
Edge sensitivity of I/O[0]
Interrupt source (from IOs set in RegInterruptMask)
0 : No interrupt has been triggered by this IO
1 : An interrupt has been triggered by this IO (an event as configured in relevant
RegSense register occured).
Writing '1' clears the bit in RegInterruptSource and in RegEventStatus
When all bits are cleared, NINT signal goes back high.
Event status of all IOs.
0 : No event has occured on this IO
1 : An event has occured on this IO (an edge as configured in relevant RegSense
register occured).
Writing '1' clears the bit in RegEventStatus and in RegInterruptSource if relevant.
If the edge sensitivity of the IO is changed, the bit(s) will be cleared automatically
Reserved. Must be set to 0 (default value)
PLDModeHigh (applies to I/O[7:4])
00 : PLD disabled – Normal GPIO mode for I/O[7:4]
01 : PLD 2-to-1 mode – I/O[6] is a decode of I/O[5:4] as defined in RegPLDTable0
10 : PLD 3-to-1 mode – I/O[7] is a decode of I/O[6:4] as defined in RegPLDTable1
11 : Reserved
Reserved. Must be set to 0 (default value)
PLDModeLow (applies to I/O[3:0])
00 : PLD disabled – Normal GPIO mode for I/O[3:0]
01 : PLD 2-to-1 mode – I/O[2] is a decode of I/O[1:0] as defined in RegPLDTable0
10 : PLD 3-to-1 mode – I/O[3] is a decode of I/O[2:0] as defined in RegPLDTable2
11 : PLD 3-to-2 mode – I/O[4:3] are decodes of I/O[2:0] as defined in RegPLDTable3
and RegPLDTable4
Value to be output on I/O[6] when I/O[5:4] = 11
Value to be output on I/O[6] when I/O[5:4] = 10
Value to be output on I/O[6] when I/O[5:4] = 01
Value to be output on I/O[6] when I/O[5:4] = 00
Value to be output on I/O[2] when I/O[1:0] = 11
Value to be output on I/O[2] when I/O[1:0] = 10
Value to be output on I/O[2] when I/O[1:0] = 01
Value to be output on I/O[2] when I/O[1:0] = 00
Value to be output on I/O[7] when I/O[6:4] = 111
Value to be output on I/O[7] when I/O[6:4] = 110
Value to be output on I/O[7] when I/O[6:4] = 101
Value to be output on I/O[7] when I/O[6:4] = 100
Value to be output on I/O[7] when I/O[6:4] = 011
Value to be output on I/O[7] when I/O[6:4] = 010
Value to be output on I/O[7] when I/O[6:4] = 001
Value to be output on I/O[7] when I/O[6:4] = 000
Value to be output on I/O[3] when I/O[2:0] = 111
Value to be output on I/O[3] when I/O[2:0] = 110
Value to be output on I/O[3] when I/O[2:0] = 101
Value to be output on I/O[3] when I/O[2:0] = 100
Value to be output on I/O[3] when I/O[2:0] = 011
Value to be output on I/O[3] when I/O[2:0] = 010
Value to be output on I/O[3] when I/O[2:0] = 001
22
4/8/16 Channel Low Voltage GPIO
SX1501/SX1502/SX1503
Applies only when
PLDModeHigh is set to PLD 2-
to-1 mode
Applies only when
PLDModeLow is set to PLD 2-
to-1 mode
Applies only when
PLDModeHigh is set to PLD 3-
to-1 mode
Applies only when
PLDModeLow is set to PLD 3-
to-1 mode
00 : None
01 : Rising
10 : Falling
11 : Both
00 : None
01 : Rising
10 : Falling
11 : Both
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