16. You were given a device to interface with the Cortex M3 microcontroller. des
ID: 3569825 • Letter: 1
Question
16. You were given a device to interface with the Cortex M3 microcontroller. describe the steps that you need to take to interface it. 17. Use the datasheet of the OLED and Give the state of BS1 and BS2 pins for the OLED to be interfaced to use parallel ports. Given the circuit diagram of the way OLED is connected to the microcontroller (see 1968 evalboard document), will you be able to write a program to change those bits? Explain your answer. What it will take to interface OLED using parallel ports? Discuss the advantages and disadvantages of using serial vs. parallel ports?Explanation / Answer
Answer for 16 is:
The ultralow power STM32L15xxx incorporates the connectivity power of the universal serial bus (USB) with the high-performance ARM Cortex-M3 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (Flash memory up to 128 Kbytes and RAM up to 16 Kbytes) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.
All devices offer a 12-bit ADC, 2 DACs and 2 ultralow power comparators, six general-purpose 16-bit timers and two basic timers, which can be used as time bases.
Moreover, the STM32L15xxx devices contain standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs and a USB. The STM32L15xxx devices offer up to 20 capacitive sensing channels to simply add touch sensing functionality to any application.
They also include a real-time clock and a set of backup registers that remain powered in Standby mode.
Finally, the integrated LCD controller has a built-in LCD voltage generator that allows you to drive up to 8 multiplexed LCDs with contrast independent of the supply voltage.
The ultralow power STM32L15xxx operates from a 1.8 to 3.6 V power supply (down to 1.65 V at power down) with BOR and from a 1.65 to 3.6 V power supply without BOR option. It is available in the -40 to +85
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