GENERAL DESCRIPTION

The SX1501, SX1502 and SX1503 are complete ultra low voltage General Purpose parallel Input/Output (GPIO) expanders ideal for low power handheld battery powered equipment. They allow easy serial expansion of I/O through a standard 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.

KEY PRODUCT FEATURES

? 4/8/16 channel of I/Os

? True bi-directional style I/O

? Programmable Pull-up/Pull-down

? Push/Pull outputs

? 1.2V to 5.5V independent operating voltage for all supply rails (VDDM, VCC1, VCC2)

? 5.5V compatible I/Os, up to 24mA output sink (no total sink current limit)

? Fully programmable logic functions (PLD)

? 400kHz 2-wire I2C compatible slave interface

? Open drain active low interrupt output (NINT)

? Bit maskable

? Programmable edge sensitivity

? Power-On Reset and reset input (NRESET)

? Ultra low current consumption of typ. 1uA

? -40°C to +85°C operating temperature range

? Ultra-Thin 3x3mm QFN-UT-20 and TSSOP-20 packages (SX1501/SX1502)

? Ultra-Thin 4x4mm QFN-UT-28 and TSSOP-28 packages (SX1503)

TYPICAL APPLICATIONS

? Cell phones, PDAs, MP3 players

? Digital camera

? Portable multimedia player

? Notebooks

? GPS Units

? Industrial, ATE

? Any battery powered equipment

SX1502屬于開發(fā)板，套件，編程器 > 評估和演示板及套件。Semtech Corporation制造生產(chǎn)的SX1502評估和演示板及套件該系列產(chǎn)品提供了一種方便的方法，在經(jīng)過驗(yàn)證的實(shí)施環(huán)境中評估某些重點(diǎn)器件的性能或特性。評估方法通常有完善的文檔說明，并且視乎具體情況由評估軟件提供支持。產(chǎn)品通常由印刷電路板組成，板上已裝有重點(diǎn)器件以及必要或有用的支持元器件，另外也可能包括其他組件，例如電纜或電源。對于數(shù)量特別多或類別獨(dú)特的器件類別(如 ADC、DAC 和開關(guān)模式電源)，評估平臺可組合為一個單獨(dú)的產(chǎn)品系列。