sx1508bevk Semtech Corporation, sx1508bevk Datasheet - Page 12

• Manufacturer Part Number: sx1508bevk
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
4
4.1
4.2
Rev 3 – 9
B
SX1507B 4-channel I
SX1508B 8-channel I
LOCK
th
Sept. 2010
D
ETAILED
NRESET
NRESET
ADDR1
ADDR0
ADDR1
ADDR0
VDDM
VDDM
Figure 6 – 8-channel Low Voltage GPIO with LED Driver and Keypad Engine
SDA
SDA
SCL
SCL
D
ESCRIPTION
Figure 5 – 4-channel Low Voltage GPIO with LED Driver
2
2
C GPIO with LED Driver
C GPIO with LED Driver and Keypad Engine
16 Keys Max
Keypad
Engine
Reset
Reset
Input
Filter
Input
Filter
SX1507B
SX1508B
Clock Mgmt
Clock Mgmt
Control
Control
Oscillator
I
Oscillator
I
External
OSCIO
External
2
OSCIO
2
Internal
Internal
Clock
GND
GND
C Bus
Clock
C Bus
12
4-Bit
8-Bit
R/W
R/W
World’s Lowest Voltage Level Shifting GPIO
SX1507B/SX1508B/SX1509B
Intensity (PWM)
Breathe (Ramp)
Intensity (PWM)
Breathe (Ramp)
LED Driver
I/O Bank A
A
LED Driver
I/O Bank A
A
I/O Bank B
A
Blink (Timer)
Blink (Timer)
Interrupt
Interrupt
with LED Driver and Keypad Engine
VCC1
I/O[0]
I/O[1]
VCC2
I/O[4]
I/O[5]
I/O[6]
I/O[7]
NINT
VCC1
I/O[0]
I/O[1]
I/O[2]
I/O[3]
NINT
I/O[2]
I/O[3]
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