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SX1508B 데이터시트 PDF




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부품번호 SX1508B 기능
기능 Worlds Lowest Voltage Level Shifting GPIO
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SX1508B 데이터시트, 핀배열, 회로
SX1508B/SX1509B
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
ADVANCED COMMUNICATIONS & SENSING
SX1508B/SX1509B
World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine
GENERAL DESCRIPTION
The SX1508B and SX1509B are complete ultra low
voltage General Purpose parallel Input/Output (GPIO)
expanders ideal for low power handheld battery
powered equipment. This family of GPIOs comes in
8-, 16-channel configuration and allows easy serial
expansion of I/O through a standard 400kHz I2C
interface. GPIO devices can provide additional control
and monitoring when the microcontroller or chipset
has insufficient I/O ports, or in systems where serial
communication and control from a remote location is
advantageous.
These devices can also act as a level shifter to
connect a microcontroller running at one voltage level
to a component running at a different voltage level,
thus eliminating the need for extra level translating
circuits. The core is operating as low as 1.425V while
the dual I/O banks can operate between 1.2V and
3.6V independent of the core voltage and each other
(5.5V tolerant).
The SX1508B and SX1509B feature a fully
programmable LED Driver with internal oscillator for
enhanced lighting control such as intensity (via 256-
step PWM), blinking and breathing (fade in/out) make
them highly versatile for a wide range of LED
applications.
In addition, keypad applications are also supported
with an on-chip scanning engine that enables
continuous keypad monitoring up to 64 keys without
any additional host interaction reducing bus activity.
The SX1508B and SX1509B have the ability to
generate mask-programmable interrupts based on a
falling/rising edge of any of its GPIO lines. A
dedicated pin (NINT) indicates to a host controller
that a state change occurred on one or more of the
lines. Each GPIO is programmable via a bank of 8-bit
configuration registers that include data, direction,
pull-up/pull-down, interrupt mask and interrupt
registers. These I/O expanders feature small footprint
packages and are rated from -40°C to +85°C
temperature range.
ORDERING INFORMATION
Part Number I/Os Package
SX1508BIULTRT 8 QFN-UT-20
SX1509BIULTRT 16 QFN-UT-28
SX1508BEVK 8 Evaluation Kit
SX1509BEVK 16 Evaluation Kit
Marking
GAA2
GBA3
-
-
KEY PRODUCT FEATURES
1.2V to 3.6V Low Operating Voltage with Dual
Independent I/O Rails (VCC1, VCC2)
Enable Direct Level Shifting Between I/O
Banks and Host Controller
5.5V Tolerant I/Os, Up to 15mA Output Sink on
All I/Os (No Total Sink Current Limit)
Integrated LED Driver for Enhanced Lighting
Intensity Control (256-step PWM)
Blink Control (224 On/Off values)
Breathing Control (224 Fade In/Out values)
On-Chip Keypad Scanning Engine
Support Up to 8x8 Matrix (64 Keys)
Configurable Input Debouncer
8/16 Channels of True Bi-directional Style I/O
Programmable Pull-up/Pull-down
Push/Pull or Open-drain outputs
Programmable Polarity
Open Drain Active Low Interrupt Output (NINT)
Bit Maskable
Programmable Edge Sensitivity
Built-in Clock Management (Internal 2MHz
Oscillator/External Clock Input, 7 clock values)
OSCIO can be Configured as GPO
400kHz I2C Compatible Slave Interface
4 User-Selectable I²C Slave Addresses
Power-On Reset and Reset Input (NRESET)
Ultra Low Current Consumption: 1uA Typ
-40°C to +85°C Operating Temperature Range
Up to 2kV HBM ESD Protection
Small Footprint Packages
Pb & Halogen Free, RoHS/WEEE compliant
TYPICAL APPLICATIONS
Cell phones, PDAs, MP3 players
Digital camera, Notebooks, GPS Units
Any battery powered equipment
Host
Controller
VDDM
1.425 - 3.6V
I2C SX1508B
NINT
NRESET
VCC1
1.2 - 3.6V
IO0
IO1
IO2
IO3
VCC2
1.2 - 3.6V
IO4
IO5
IO6
IO7
LEVEL SHIFTING
FULL LED DRIVE
KEYPAD SCANNING
Rev 4 – 26th April 2011
1
BUTTON CONTROL
www.semtech.com http://www.Datasheet4U.com




SX1508B pdf, 반도체, 판매, 대치품
SX1508B/SX1509B
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
ADVANCED COMMUNICATIONS & SENSING
1 PIN DESCRIPTION
1.1 SX1508B 8-channel I2C GPIO with LED Driver and Keypad Engine
Pin Symbol Type Description
1 NRESET
DI Active low reset input
2 SDA DIO I2C serial data line
3 SCL
DI I2C 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 (*1) 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 1 – SX1508B Pin Description
NRESET
SDA
SCL
ADDR0
I/O[0]
GND
(PAD)
I/O[4]
VDDM
OSCIO
ADDR1
NINT
Figure 1 – SX1508B QFN-UT-20 Pinout
Rev 4 – 26th April 2011
4
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SX1508B 전자부품, 판매, 대치품
SX1508B/SX1509B
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
ADVANCED COMMUNICATIONS & SENSING
2 ELECTRICAL CHARACTERISTICS
2.1 Absolute Maximum Ratings
Stress above the limits listed in the following table may cause permanent failure. Exposure to absolute ratings for
extended time periods may affect device reliability. The limiting values are in accordance with the Absolute
Maximum Rating System (IEC 134). All voltages are referenced to ground (GND).
Symbol Description
Min Max Unit
Vmax_VDDM
Vmax_VCC1-2
VES_HBM
Main supply voltage
Digital I/O pin supply voltage
Electrostatic handling HBM model(1) (SX1508B)
Electrostatic handling HBM model(1) (SX1509B)
- 0.4
- 0.4
-
-
3.7
3.7
2000
1500
V
V
V
VES_CDM
VES_MM
Electrostatic handling CDM model
Electrostatic handling MM model (SX1508B)
Electrostatic handling MM model (SX1509B)
- 1000 V
- 200
V
- 150
TA Operating ambient temperature range
-40 +85 °C
TC Junction temperature range
-40
TSTG
Storage temperature range
-55
Ilat Latchup-free input pin current(2)
+/-100
(1) Tested according to JESD22-A114A
(2) Static latch-up values are valid at maximum temperature according to JEDEC 78 specification
Table 4 - Absolute Maximum Ratings
+125
+150
-
°C
°C
mA
2.2 Electrical Specifications
Table below assumes default registers values, unless otherwise specified. Typical values are given for TA =
+25°C, VDDM=VCC1=VCC2=3.3V.
Symbol Description
Conditions
Min Typ Max Unit
Supply
VDDM Main supply voltage
VCC1,2 I/O banks supply voltage
IDDM
Main supply current
(SX1508B, I2C inactive)
Main supply current
(SX1509B, I2C inactive)
ICC1,2 I/O banks supply current(1)
Oscillator OFF
Internal osc. (2MHz)
External osc. (32kHz)
Oscillator OFF
Internal osc. (2MHz)
External osc. (32kHz)
1.425
1.2
-
-
-
-
-
-
-
-
-
1
175
10
1
365
10
1
3.6 V
3.6 V
5
235 µA
-
5
460 µA
-
2 µA
I/Os set as Input
VIH High level input voltage
VIL Low level input voltage
ILEAK
CI
Input leakage current
Input capacitance
VCC1,2 >= 2V
VCC1,2 < 2V
0.7*
VCC1,2
0.8*
VCC1,2
-
-
5.5(8)
5.5(8)
V
VCC1,2 >= 2V
VCC1,2 < 2V
-0.4
-0.4
-
-
0.3*
VCC1,2
0.2*
VCC1,2
V
Assuming no active
pull-up/down
-1
-
1 µA
- - - 10 pF
I/Os set as Output
VOH
VOL
IOH
IOL
High level output voltage
Low level output voltage
High level output source current
Low level output sink current
-
-
VCC1,2 >= 2V
VCC1,2 < 2V
VCC1,2 >= 2V
VCC1,2 < 2V
VCC1,2
– 0.3
-
VCC1,2 V
-0.4 - 0.3 V
-
-
-
-
8(2)
2(2)
mA
-
-
-
-
15(2)
8(2)
mA
Rev 4 – 26th April 2011
7
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부품번호상세설명 및 기능제조사
SX1508

Lowest Voltage Level Shifting GPIO

Semtech Corporation
Semtech Corporation
SX1508B

Worlds Lowest Voltage Level Shifting GPIO

Semtech Corporation
Semtech Corporation

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