th Oct. 2009 5 www.semtech.com SX1507/SX1508/SX1509 Wo" />
參數(shù)資料
型號(hào)： SX1508IULTRT
廠商： Semtech
文件頁(yè)數(shù)： 37/41頁(yè)
文件大?。?/td> 0K
描述： IC GPIO EXPANDER I2C 8CH 20QFN
特色產(chǎn)品： SX1508/SX1509 GPIO Expanders
標(biāo)準(zhǔn)包裝： 1
接口： I²C
輸入/輸出數(shù)： 8
中斷輸出： 是
頻率 - 時(shí)鐘： 400kHz
電源電壓： 1.2 V ~ 3.6 V
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 20-UFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 20-QFN-UT（3x3）
包裝： 標(biāo)準(zhǔn)包裝
包括： LED 驅(qū)動(dòng)器 / 小鍵盤(pán)引擎
其它名稱： SX1508IULDKR
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 30
th Oct. 2009
5
www.semtech.com
SX1507/SX1508/SX1509
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
1.2
SX1508 8-channel I
2C GPIO with LED Driver and Keypad Engine
Pin
Symbol
Type
Description
1
NRESET
DIO
Active low reset
2
SDA
DIO
I
2C serial data line
3
SCL
DI
I
2C serial clock line
4
ADDR0
DI
Address input bit 0, connect to VDDM or GND
5
I/O[0]
DIO
(*1)
I/O[0], at power-on configured as an input
LED driver : Intensity control (PWM)
6
I/O[1]
DIO
(*1)
I/O[1], at power-on configured as an input
LED driver : Intensity control (PWM)
7
VCC1
P
Supply voltage for Bank A I/O[3-0]
8
GND
P
Ground Pin
9
I/O[2]
DIO
(*1)
I/O[2], at power-on configured as an input
LED driver : Intensity control (PWM), Blinking
10
I/O[3]
DIO
(*1)
I/O[3], at power-on configured as an input
LED driver : Intensity control (PWM), Blinking, Breathing (Fade In/Out)
11
NINT
DO
Active low interrupt output
12
ADDR1
DI
Address input bit 1, connect to VDDM or GND
13
OSCIO
DIO
Oscillator input/output, can also be used as GPO
14
VDDM
P
Main supply voltage
15
I/O[4]
DIO
(*1)
I/O[4], at power-on configured as an input
LED driver : Intensity control (PWM)
16
I/O[5]
DIO
(*1)
I/O[5], at power-on configured as an input
LED driver : Intensity control (PWM)
17
VCC2
P
Supply voltage for Bank B I/O[7-4]
18
GND
P
Ground Pin
19
I/O[6]
DIO
(*1)
I/O[6], at power-on configured as an input
LED driver : Intensity control (PWM), Blinking
20
I/O[7]
DIO
(*1)
I/O[7], at power-on configured as an input
LED driver : Intensity control (PWM), Blinking, Breathing (Fade In/Out)
D/I/O/P: Digital/Input/Output/Power
(*1) This pin is programmable through the I2C interface
Table 2 – SX1508 Pin Description
Figure 1 – SX1508 QFN-UT-20 Pinout
NRESET
SDA
SCL
ADDR0
I/O[0]
I/
O
[1
]
V
C
1
G
N
D
I/
O
[2
]
I/
O
[3
]
I/O[4]
VDDM
OSCIO
ADDR1
NINT
I/
O
[7
]
I/
O
[6
]
G
N
D
V
C
2
I/
O
[5
]
GND
(PAD)
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