The model LPC1114FBD48/302 is part of the LPC1100 series of microcontrollers produced by NXP Semiconductors. This microcontroller features a 48-pin LQFP (Low-profile Quad Flat Package) form factor. Below is a comprehensive breakdown of the pin functions, encapsulating all 48 pins, and a set of frequently asked questions (FAQ) related to the pinout.
Pin Function Table (48-pin LQFP)
Pin Number Pin Name Pin Function Description 1 VDD Power supply input (3.3V) 2 VSS Ground (0V) 3 VDD Power supply input (3.3V) 4 VSS Ground (0V) 5 P0_0 General I/O, digital input/output (GPIO) 6 P0_1 General I/O, digital input/output (GPIO) 7 P0_2 General I/O, digital input/output (GPIO) 8 P0_3 General I/O, digital input/output (GPIO) 9 P0_4 General I/O, digital input/output (GPIO) 10 P0_5 General I/O, digital input/output (GPIO) 11 P0_6 General I/O, digital input/output (GPIO) 12 P0_7 General I/O, digital input/output (GPIO) 13 P0_8 General I/O, digital input/output (GPIO) 14 P0_9 General I/O, digital input/output (GPIO) 15 P0_10 General I/O, digital input/output (GPIO) 16 P0_11 General I/O, digital input/output (GPIO) 17 P0_12 General I/O, digital input/output (GPIO) 18 P0_13 General I/O, digital input/output (GPIO) 19 P0_14 General I/O, digital input/output (GPIO) 20 P0_15 General I/O, digital input/output (GPIO) 21 P0_16 General I/O, digital input/output (GPIO) 22 P0_17 General I/O, digital input/output (GPIO) 23 P0_18 General I/O, digital input/output (GPIO) 24 P0_19 General I/O, digital input/output (GPIO) 25 P0_20 General I/O, digital input/output (GPIO) 26 P0_21 General I/O, digital input/output (GPIO) 27 P0_22 General I/O, digital input/output (GPIO) 28 P0_23 General I/O, digital input/output (GPIO) 29 P0_24 General I/O, digital input/output (GPIO) 30 P0_25 General I/O, digital input/output (GPIO) 31 P0_26 General I/O, digital input/output (GPIO) 32 P0_27 General I/O, digital input/output (GPIO) 33 P0_28 General I/O, digital input/output (GPIO) 34 P0_29 General I/O, digital input/output (GPIO) 35 P0_30 General I/O, digital input/output (GPIO) 36 P0_31 General I/O, digital input/output (GPIO) 37 SWDIO Serial Wire Debug Input/Output 38 SWCLK Serial Wire Clock 39 RESET External Reset Input 40 VDD Power supply input (3.3V) 41 VSS Ground (0V) 42 NC No connection (used for internal circuitry) 43 NC No connection (used for internal circuitry) 44 NC No connection (used for internal circuitry) 45 NC No connection (used for internal circuitry) 46 NC No connection (used for internal circuitry) 47 NC No connection (used for internal circuitry) 48 NC No connection (used for internal circuitry)FAQ: Frequently Asked Questions (Pinout and Usage)
1. What is the function of pin 1 (VDD) on the LPC1114FBD48/302 microcontroller? Pin 1 (VDD) is the power supply input for the LPC1114FBD48/302, which typically operates at 3.3V.
2. What is the purpose of pin 2 (VSS)? Pin 2 (VSS) is the ground pin. It is used to complete the electrical circuit and serves as a reference voltage for the microcontroller.
3. Can pin 5 (P00) be used for both input and output? Yes, pin 5 (P00) is a general-purpose I/O pin that can be configured as either an input or an output.
4. What is the role of pin 37 (SWDIO)? Pin 37 (SWDIO) is the Serial Wire Debug Input/Output pin, which is used for debugging and programming the LPC1114FBD48/302 microcontroller.
5. How many GPIO pins does the LPC1114FBD48/302 have? The LPC1114FBD48/302 has 32 GPIO pins, ranging from P00 to P031.
6. What is the significance of pin 39 (RESET)? Pin 39 (RESET) is the external reset input. It is used to reset the microcontroller when triggered.
7. Can the LPC1114FBD48/302 be powered by 5V? No, the LPC1114FBD48/302 operates at 3.3V. Using a voltage higher than 3.3V may damage the microcontroller.
8. What is the function of pins labeled 'NC'? Pins labeled 'NC' are "No Connection" pins. These pins are not internally connected and are typically reserved for future use or for physical placement purposes.
9. How do I connect an external clock to the LPC1114FBD48/302? The LPC1114FBD48/302 supports external clock inputs. You should connect the external clock source to the dedicated clock pins as per the datasheet.
10. Is it possible to use the LPC1114FBD48/302 in low-power applications? Yes, the LPC1114FBD48/302 supports several low-power modes, including sleep and deep sleep modes, to minimize power consumption.
11. What kind of debugging interface is supported by the LPC1114FBD48/302? The LPC1114FBD48/302 supports the Serial Wire Debug (SWD) interface for programming and debugging.
12. How many pins are dedicated to power supply (VDD and VSS)? There are 4 pins dedicated to power: VDD (pins 1, 3, 40) and VSS (pins 2, 4, 41).
13. How do I use UART on the LPC1114FBD48/302? UART functionality can be enabled by configuring the appropriate pins (P00 and P01) as UART TX and RX in your application.
14. Are there any analog pins on the LPC1114FBD48/302? Yes, the LPC1114FBD48/302 features several analog-to-digital converter (ADC) pins that can be configured as input for analog signals.
15. Can I use the LPC1114FBD48/302 for motor control applications? Yes, the LPC1114FBD48/302 can be used for motor control applications with its PWM functionality, but the number of PWM outputs is limited.
16. Does the LPC1114FBD48/302 have I2C support? Yes, the LPC1114FBD48/302 supports I2C communication, which can be enabled via the specific I2C pins.
17. What voltage is recommended for the RESET pin? The RESET pin (pin 39) should be driven low to trigger a reset. The recommended voltage range for a reset signal is typically 0V (low) to 3.3V (high).
18. What is the maximum operating temperature of the LPC1114FBD48/302? The LPC1114FBD48/302 can operate within a temperature range of -40°C to +85°C.
19. Can the LPC1114FBD48/302 be programmed via USB? The LPC1114FBD48/302 does not have native USB support, but it can be programmed via the SWD interface using an external debugger.
20. What is the maximum clock speed of the LPC1114FBD48/302? The LPC1114FBD48/302 operates at a maximum clock speed of 50 MHz.
This detailed explanation covers the 48-pin function list and answers common questions related to the LPC1114FBD48/302 microcontroller. Let me know if you'd like more specifics or additional questions answered!
