sx1511b Semtech Corporation, sx1511b Datasheet - Page 36
sx1511b
Manufacturer Part Number
sx1511b
Description
World??s Lowest Voltage Level Shifting Gpio With Driver Keypad Engine
Manufacturer
Semtech Corporation
Datasheet
1.SX1511B.pdf
(43 pages)
0xXX
0xXX
0xXX
0x6A
0x7D
0x69
ADVANCED COMMUNICATIONS & SENSING
Rev 3 – 9
RegOffX
RegTRiseX
RegTFallX
RegHighInputB
RegHighInputA
RegReset
th
Sept. 2010
Table 13 – SX1512B Configuration Registers Description
0x00
0x00
0x00
0x00
0x00
0x00
7:3
2:0
7:5
4:0
7:5
4:0
7:0
7:0
7:0
OFF Time of IO[X]:
0 : Infinite (Single shot mode, TOff directly controlled by RegData, Cf §4.9.3)
1 - 15 : TOffX = 64 * RegOffX[7:3] * (255/ClkX)
16 - 31 : TOffX = 512 * RegOffX[7:3] * (255/ClkX)
OFF Intensity of IO[X]
- Linear mode : IOffX = 4 x RegOff[2:0]
- Logarithmic mode (fading capable IOs only) : IOffX = f(4 x RegOffX[2:0]) , Cf §4.9.5
Unused
Fade In setting of IO[X]
0 : OFF
1 - 15 : TRiseX = (RegIOnX-(4xRegOffX[2:0])) * RegTRiseX * (255/ClkX)
16 - 31 : TRiseX = 16 * (RegIOnX-(4xRegOffX[2:0])) * RegTRiseX * (255/ClkX)
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
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.
36
World’s Lowest Voltage Level Shifting GPIO
SX1510B/SX1511B/SX1512B
with LED Driver and Keypad Engine
www.semtech.com