SX1508EVK Semtech, SX1508EVK Datasheet - Page 12

• Manufacturer Part Number: SX1508EVK
• Description: Evaluation Board For SX1508
• Manufacturer: Semtech

ADVANCED COMMUNICATIONS & SENSING
4
4.1
4.2
Rev 1 – 30
B
SX1507 4-channel I
SX1508 8-channel I
LOCK
th
Oct. 2009
D
ETAILED
NRESET
NRESET
ADDR1
ADDR0
ADDR1
ADDR0
VDDM
VDDM
Figure 5 – 8-channel Low Voltage GPIO with LED Driver and Keypad Engine
SDA
SDA
SCL
SCL
D
2
2
ESCRIPTION
C GPIO with LED Driver
C GPIO with LED Driver and Keypad Engine
Figure 4 – 4-channel Low Voltage GPIO with LED Driver
16 Keys Max
Keypad
Engine
Reset
Reset
Input
Filter
Input
Filter
SX1507
SX1508
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
Intensity (PWM)
Intensity (PWM)
LED Driver
Breath (Ramp)
I/O Bank A
A
LED Driver
Breath (Ramp)
I/O Bank A
A
I/O Bank B
A
Blink (Timer)
Blink (Timer)
Interrupt
Interrupt
with LED Driver and Keypad Engine
SX1507/SX1508/SX1509
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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