Raspberry Pi UART Expansion Module User Manual Raspberry Pi Expansion Module User Manual 52PI-RPI-UART Maximum Power at Minimum Size www.52pi.cn Raspberry Pi UART Expansion Module User Manual -1- www.52pi.
Raspberry Pi UART Expansion Module User Manual Contact Us Raspberry Pi Geek Forum admin@52pi.net www.52pi.cn Version：1.0 Data：2014.9 -2- www.52pi.
Raspberry Pi UART Expansion Module User Manual Directory 1:Product Specification：............................................................. - 7 2:Produce Overview： ................................................................. - 7 3:Produce Features：................................................................... - 8 4:Port： ....................................................................................... - 8 5:Product Parameters： .............................................................
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Raspberry Pi UART Expansion Module User Manual This module is designed specifically for the Raspberry Pi IO expansion modules. The module expand 32 IO, Multiple modules can cascade, infinity cascade，infinity GPIO. I2C GPIO expand module： This module is designed specifically for the Raspberry Pi IO expansion modules. The Module use I2C bus to connect to Raspberry Pi. The module expand 8 Bidirectional GPIO and wit isolation protection function which can effectively excessive external voltage.
Raspberry Pi UART Expansion Module User Manual SuperCapacitor on the board to keep the real time for a long time after the Raspberry Pi has power off. AD/DA expand module： The AD/DA module is specifically designed for Raspberry Pi. There is 8bit high resolution DAC and ADC on one chip. I2C electric level conversion expand module： The I2C electric level conversion module is specifically designed for Raspberry Pi. The module convert the 3.3V of I2C electric level to 5V level or convert 5V to 3.3V.
Raspberry Pi UART Expansion Module User Manual 1:Product Specification： 2:Produce Overview： -7- www.52pi.
Raspberry Pi UART Expansion Module User Manual The Serial Por module is specifically designed for Raspberry Pi. The module use Maxim MAX232 chip and DB9 port. So the user don’t need to connect Dupont Line and that avoid wrong wiring. User can use this module to debug Raspberry Pi easily. 3:Produce Features： Maxim MAX232 on chip DB9 port 4:Port： Raspberry Pi connection port DB9 port 5:Product Parameters： Working voltage: 5V Two Drivers and Two Receivers Operates Up To 120 kbit/s Low Supply Current . . .
Raspberry Pi UART Expansion Module User Manual 8:More information： The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available. These parts are especially useful in battery-powered systems, since their low-power shutdown mode reduces power dissipation to less than 5µW.
Raspberry Pi UART Expansion Module User Manual More information please check： http://www.maximintegrated.com/cn/products/interface/transceivers/MAX232.html 8.2:Testbench： Connect the module to the Raspberry Pi Open the corresponding port through Putty Power up the Raspberry Pi, if the terminal print the boot information the module is OK! 9:Version Version Date Document Version 52PI-RPI-UART 2014-09-23 52PI-RPI-UART V1.0 - 10 - www.52pi.
