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Block diagram of an HD44780U-based LCD module. The Hitachi HD44780 LCD controller is limited to monochrome text displays and is often used in copiers, fax machines, laser printers, industrial test equipment, and networking equipment, such as routers and storage devices. Compatible LCD screens are manufactured in several standard configurations.
Download as PDF; Printable version; ... Vcc Type 1A (extended GPIO) GPIO1 GPIO5 ... Vcc Type 6A (extended I2C) nc/INT GPIO nc/RESET GPIO SCL GPIO SDA
In AmigaOS one can use the i2c.resource component [25] for AmigaOS 4.x and MorphOS 3.x or the shared library i2c.library by Wilhelm Noeker for older systems. Arduino developers can use the "Wire" library. CircuitPython and MicroPython developers can use the busio.I2C or machine.I2C classes respectively.
English: Sample Inter-Integrated Circuit (I²C) schematic with one master (a microcontroller) and three slave nodes (an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), and a microcontroller)
Schematic symbol for a buffer with open-collector output [6] Open output is indicated on schematics with these IEEE symbols: [7] ⎐ – NPN open collector or similar output that can supply a relatively low-impedance low voltage when not turned off. Requires external pullup. Capable of positive-logic wired-AND connection.
The Power Management Bus (PMBus) is a variant of the System Management Bus (SMBus) which is targeted at digital management of power supplies.Like SMBus, it is a relatively slow speed two wire communications protocol based on I²C.
English: A sequence diagram of data transfer on the I²C bus S - Start condition; P - Stop condition; B - transferring of one bit; SDA changes are allowed when SCL is low (blue), otherwise there will be a start or stop condition generated
The System Management Bus (SMBus or SMB) is a single-ended simple two-wire bus for the purpose of lightweight communication. Most commonly it is found in chipsets of computer motherboards for communication with the power source for ON/OFF instructions.