EGR314 Team 205 - Deepit Arora, Enoch Choi, Michael Gross
| 1. Determine your project-specific requirements | 3. Look up specifications in the PIC datasheet | ||||
|---|---|---|---|---|---|
| Design Considerations | Team Project-Specific Requirementsfrom Problem Definition and Block Diagram | PIC Option 1 | PIC Option 2 | PIC Option 3 | |
| How many GPIO Pins? | 16 | 25 Pins | 44 Pins | 80 Pins | |
| Built-in Analog to Digital Converter? How many? | not required | 24 Pins | 35 Pins | 23 Pins | |
| Built-in Hardware PWM? How many? | not required | 2x10 bit | 4 Pins | 12 Pins | |
| Built-in I2C? SPI? How many? | 1x i2c | Both, 2 | 2 SPI Pins, | ||
| 1 I2C Pin | Both, 1 | ||||
| Built-in UART? How many? | 1x USART | 2x EUSART | 2 Pins | 1 | |
| Other Required Built-In Features? (optional) | Internal 16-Bit Timers MCC Compatability | ||||
| Additional considerations specific to your project specifications (optional) | ISRs | ||||
| 2. Find 3 microcontrollers that meet your team project-specific requirements and find information on each | 4. Look up part details in the PIC datasheet | ||||
| Microcontroller Considerations | Instructions | PIC Option 1 | PIC Option 2 | PIC Option 3 | |
| Part Number | Include the entire part number (leave off any letters at the end that specify the package type) | PIC18LF26K40-I/SO | PIC24HJ128GP204 | PIC24FJ256DA210 | |
| Link (URL) to product page | Do not paste links directly into the table. Instead, link them like this. | Link | Link | Link | |
| Links (URL) to Data Sheets | Link | Link | Link | ||
| Links (URL) to Application Notes | Often provided by manufacturers to give you specific examples of how to use their products. Search for them in the search bar on the Microchip’s website. | Link | Link | Link | |
| Links (URL) to Code Examples | Not Specified | Link | link | ||
| Links (URL) to External Resources | Search on Google and YouTube for other resources for each specific microcontroller. | Link | Link | Link | |
| Production Unit Cost | Find in the Microchip online store, or Digikey | $2.04 | $6.90 | $10.27 | |
| Supply Voltage Range | Find in the microcontroller datasheet | 1.8V – 3.6V | 3.0V to 3.6V | 3.0-3.6V | |
| Absolute Maximum Current for entire IC | Find in the microcontroller datasheet | Not Specified | Not Specified | Not specified | |
| Maximum GPIO Pin Current (Source/Sink) | Find in the microcontroller datasheet | Not Specified | 5 mA | 15-25 | |
| mA | |||||
| 8-bit or 16-bit Architecture | Find in the microcontroller datasheet | 8-bit | 16-bit | 16-bit | |
| Available IC Packages / Footprints | Find in the microcontroller datasheet. Choose a microcontroller with both surface mount and DIP/through-hole packages available. See Most Common Mistakes below for requirements to improve manufacturing reliability. | SPDIP, SOIC, SSOP, QFN, UQFN, PDIP, | |||
| TQFP | SPDIP, SOIC, QFN-S, QFN, TQFP | SSOP, UQFN(28-Lead), UQFN(36-Lead) | |||
| Supports External Interrupts? | Find in the microcontroller datasheet | YES | YES | YES | |
| In-System Programming Capability and Type | Allows for programming the microcontroller without removing it from the PCB. Find in the microcontroller datasheet. | YES, ICSP | YES, ICSP | YES, ICSP | |
| Programming Hardware, Cost, and URL | Find on the microcontroller product page | PG164140, $76.99, | |||
| Link | |||||
| Works with MPLAB® X Integrated Development Environment (IDE)? | Required. See Microchip Development Tools | YES | YES | YES | |
| Works with Microchip Code Configurator? | Required. Go to the MCC website, click the “Manual Downloads” tab, scroll to the device library that goes with the PIC you chose (likely “MCC 8-bit PIC”) and read the release notes to make sure your microcontroller is in the list of supported devices. | YES | YES | YES | |
| 5. Write overall pros, cons, and rankings for the chosen microcontrollers | |||||
| Overall Pros | Write at least 2 for each microcontroller | Has all the necessary Pins Low cost | |||
| Works with MCC | Has both SPI and I2C pins. | ||||
| Has all the required hardware and software capabilities. | High pin countSPI and I2C pins | ||||
| Has all the required hardware and software capabilities. | |||||
| Overall Cons | Write at least 2 for each microcontroller | Has the least amount of GPIO pins | |||
| Max GPIO current not specified | Maximum current not specified. Supply Voltage range not specified Most expensive option out of the three. | ||||
| Maximum GPIO current is lower than others | Does not include code examples. | ||||
| Small voltage rangehas more features than required | |||||
| Ranking | 1 = first, 2 = second, 3 = third | 1 | 2 | 3 | s |
Final Microcontroller Choice: PIC18LF26K40-I/SO
Rationale: Option 1 was chosen because it was the only one that is compatible with MCC and also it has more than enough pins than required. Additionally, it is the cheapest option out of the three and the voltage range is larger than the two other options.