sx1511b Semtech Corporation, sx1511b Datasheet - Page 30

• Manufacturer Part Number: sx1511b
• Description: World??s Lowest Voltage Level Shifting Gpio With Driver Keypad Engine
• Manufacturer: Semtech Corporation

0xXX
0x2A
0x7D
ADVANCED COMMUNICATIONS & SENSING
Rev 3 – 9
RegTFallX
RegHighInput
RegReset
th
Sept. 2010
Table 11 – SX1511B Configuration Registers Description
0x00
0x00
0x00
7:5
4:0
7:0
7:0
Unused
Fade Out setting of IO[X]
0 : OFF
1 - 15 : TFallX = (RegIOnX-(4xRegOffX[2:0])) * RegTFallX * (255/ClkX)
16 - 31 : TFallX = 16 * (RegIOnX-(4xRegOffX[2:0])) * RegTFallX * (255/ClkX)
Enables high input mode for each [input-configured] IO
0 : OFF. VIH max = 3.6V and VCCx min = 1.2V
1 : ON. VIH max = 5.5V and VCCx min = 1.65V
Software reset register
Writing consecutively 0x12 and 0x34 will reset the device (same as POR)
Always reads 0.
30
World’s Lowest Voltage Level Shifting GPIO
SX1510B/SX1511B/SX1512B
with LED Driver and Keypad Engine
www.semtech.com