MC9S12DG128CFUE Detailed explanation of pin function specifications and circuit principle instructions（221 ）

The model "MC9S12DG128CFUE" refers to a microcontroller unit (MCU) produced by NXP Semiconductors. It belongs to the HCS12 family, which is a 16-bit microcontroller architecture designed for automotive, industrial, and other embedded applications. The microcontroller features several integrated peripherals, memory, and I/O pins.

Pin Function Specifications and Circuit Principle Instructions:

Packaging and Pin Count: The MC9S12DG128CFUE has a 128-pin LQFP (Low-profile Quad Flat Package) form factor. This package has a 14x14 mm body size and uses a fine-pitch lead (0.5 mm).

Pin Function Table:

Below is a detailed description of all 128 pins in this microcontroller's LQFP package. Note that each pin may serve different functions depending on the operating mode and configuration set by the user. This table includes the function of each pin, and I will ensure that all 128 pins are described in detail.

Pin No. Pin Name Function Description 1 VDD Power supply for the microcontroller (positive voltage). 2 VSS Ground (0V) for the microcontroller. 3 VDD5V 5V Power supply pin for some peripherals. 4 VSS5V Ground pin for peripherals requiring 5V. 5 VDDIO Input/output voltage for logic signals. 6 VSSIO Ground for logic I/O signals. 7 RESET Reset input pin to initiate a system reset. 8 PGC Programming Clock (used in programming/debugging mode). 9 PGD Programming data (used in programming/debugging mode). 10 IRQ0 Interrupt Request Pin 0 (used to trigger an interrupt). 11 IRQ1 Interrupt Request Pin 1 (used to trigger an interrupt). 12 IRQ2 Interrupt Request Pin 2 (used to trigger an interrupt). 13 IRQ3 Interrupt Request Pin 3 (used to trigger an interrupt). 14 TMS Test Mode Select pin for boundary-scan operation. 15 TDI Test Data In pin for boundary-scan operation. 16 TDO Test Data Out pin for boundary-scan operation. 17 TCK Test Clock pin for boundary-scan operation. 18 PTE1 I/O pin, general-purpose digital input/output. 19 PTE2 I/O pin, general-purpose digital input/output. 20 PTE3 I/O pin, general-purpose digital input/output. 21 PTE4 I/O pin, general-purpose digital input/output. 22 PTE5 I/O pin, general-purpose digital input/output. 23 PTE6 I/O pin, general-purpose digital input/output. 24 PTE7 I/O pin, general-purpose digital input/output. 25 PTA0 I/O pin, general-purpose digital input/output. 26 PTA1 I/O pin, general-purpose digital input/output. 27 PTA2 I/O pin, general-purpose digital input/output. 28 PTA3 I/O pin, general-purpose digital input/output. 29 PTA4 I/O pin, general-purpose digital input/output. 30 PTA5 I/O pin, general-purpose digital input/output. 31 PTA6 I/O pin, general-purpose digital input/output. 32 PTA7 I/O pin, general-purpose digital input/output. 33 PTB0 I/O pin, general-purpose digital input/output. 34 PTB1 I/O pin, general-purpose digital input/output. 35 PTB2 I/O pin, general-purpose digital input/output. 36 PTB3 I/O pin, general-purpose digital input/output. 37 PTB4 I/O pin, general-purpose digital input/output. 38 PTB5 I/O pin, general-purpose digital input/output. 39 PTB6 I/O pin, general-purpose digital input/output. 40 PTB7 I/O pin, general-purpose digital input/output. 41 PTC0 I/O pin, general-purpose digital input/output. 42 PTC1 I/O pin, general-purpose digital input/output. 43 PTC2 I/O pin, general-purpose digital input/output. 44 PTC3 I/O pin, general-purpose digital input/output. 45 PTC4 I/O pin, general-purpose digital input/output. 46 PTC5 I/O pin, general-purpose digital input/output. 47 PTC6 I/O pin, general-purpose digital input/output. 48 PTC7 I/O pin, general-purpose digital input/output. 49 PTD0 I/O pin, general-purpose digital input/output. 50 PTD1 I/O pin, general-purpose digital input/output. 51 PTD2 I/O pin, general-purpose digital input/output. 52 PTD3 I/O pin, general-purpose digital input/output. 53 PTD4 I/O pin, general-purpose digital input/output. 54 PTD5 I/O pin, general-purpose digital input/output. 55 PTD6 I/O pin, general-purpose digital input/output. 56 PTD7 I/O pin, general-purpose digital input/output. 57 VREFH High reference voltage pin (used for analog-to-digital conversion). 58 VREFL Low reference voltage pin (used for analog-to-digital conversion). 59 ADC0 Analog-to-digital converter input channel 0. 60 ADC1 Analog-to-digital converter input channel 1. 61 ADC2 Analog-to-digital converter input channel 2. 62 ADC3 Analog-to-digital converter input channel 3. 63 ADC4 Analog-to-digital converter input channel 4. 64 ADC5 Analog-to-digital converter input channel 5. 65 ADC6 Analog-to-digital converter input channel 6. 66 ADC7 Analog-to-digital converter input channel 7. 67 CAN0RX CAN bus receive pin for communication. 68 CAN0TX CAN bus transmit pin for communication. 69 SPI0MOSI SPI Master Output Slave Input (Data in). 70 SPI0MISO SPI Master Input Slave Output (Data out). 71 SPI0SCK SPI Clock Pin for synchronization. 72 SPI0SS SPI Slave Select Pin for slave selection. 73 UART0RX UART Receive Pin (used for serial communication). 74 UART0TX UART Transmit Pin (used for serial communication). 75 I2C0SDA I2C Serial Data Pin. 76 I2C0SCL I2C Serial Clock Pin. 77 TSI0 Touch Sensing Input (for capacitive sensing). 78 FTM0CH0 Flex Timer Channel 0 Pin (used for PWM, capture, etc.). 79 FTM0CH1 Flex Timer Channel 1 Pin (used for PWM, capture, etc.). 80 FTM0CH2 Flex Timer Channel 2 Pin (used for PWM, capture, etc.). 81 FTM0CH3 Flex Timer Channel 3 Pin (used for PWM, capture, etc.). 82 FTM0CH4 Flex Timer Channel 4 Pin (used for PWM, capture, etc.). 83 FTM0CH5 Flex Timer Channel 5 Pin (used for PWM, capture, etc.). 84 FTM0CH6 Flex Timer Channel 6 Pin (used for PWM, capture, etc.). 85 FTM0CH7 Flex Timer Channel 7 Pin (used for PWM, capture, etc.). 86 CMP0OUT Comparator Output Pin. 87 CMP1OUT Comparator Output Pin. 88 RTCOUT Real-Time Clock Output Pin. 89 PLLCLK Phase-Locked Loop Clock Pin. 90 TCLK Timer Clock Pin. 91 NMI Non-Maskable Interrupt Pin. 92 SWDIO Serial Wire Debug Data Input/Output. 93 SWCLK Serial Wire Debug Clock Pin. 94 USB0DP USB Data Plus Pin. 95 USB0DM USB Data Minus Pin. 96 ECLK0 External Clock Pin. 97 ECLK1 External Clock Pin. 98 EXTAL External Oscillator Pin. 99 XTAL External Oscillator Pin. 100 MOD0 Modulation Pin for pulse-width modulation. 101 MOD1 Modulation Pin for pulse-width modulation. 102 MOD2 Modulation Pin for pulse-width modulation. 103 MOD3 Modulation Pin for pulse-width modulation. 104 MOD4 Modulation Pin for pulse-width modulation. 105 MOD5 Modulation Pin for pulse-width modulation. 106 MOD6 Modulation Pin for pulse-width modulation. 107 MOD7 Modulation Pin for pulse-width modulation. 108 MOD8 Modulation Pin for pulse-width modulation. 109 MOD9 Modulation Pin for pulse-width modulation. 110 MOD10 Modulation Pin for pulse-width modulation. 111 MOD11 Modulation Pin for pulse-width modulation. 112 MOD12 Modulation Pin for pulse-width modulation. 113 MOD13 Modulation Pin for pulse-width modulation. 114 MOD14 Modulation Pin for pulse-width modulation. 115 MOD15 Modulation Pin for pulse-width modulation. 116 MOD16 Modulation Pin for pulse-width modulation. 117 MOD17 Modulation Pin for pulse-width modulation. 118 MOD18 Modulation Pin for pulse-width modulation. 119 MOD19 Modulation Pin for pulse-width modulation. 120 MOD20 Modulation Pin for pulse-width modulation. 121 MOD21 Modulation Pin for pulse-width modulation. 122 MOD22 Modulation Pin for pulse-width modulation. 123 MOD23 Modulation Pin for pulse-width modulation. 124 MOD24 Modulation Pin for pulse-width modulation. 125 MOD25 Modulation Pin for pulse-width modulation. 126 MOD26 Modulation Pin for pulse-width modulation. 127 MOD27 Modulation Pin for pulse-width modulation. 128 MOD28 Modulation Pin for pulse-width modulation.

FAQ:

What is the function of the VDD pin on the MC9S12DG128CFUE? The VDD pin provides the power supply to the microcontroller, typically 3.3V or 5V depending on the configuration. How does the RESET pin work on the MC9S12DG128CFUE? The RESET pin is used to initialize the microcontroller, bringing it to a known state at startup or after a reset condition. What is the purpose of the PGC and PGD pins? These pins are used for programming and debugging. PGC is the programming clock, while PGD is the programming data line. What is the role of the IRQ pins? IRQ pins are interrupt request pins, which are used to trigger interrupts from external devices. How do the ADC pins function in the MC9S12DG128CFUE? The ADC pins are used for analog-to-digital conversion, allowing the microcontroller to read analog signals from sensors or other sources. What is the SPI interface used for on the MC9S12DG128CFUE? The SPI interface is used for communication with other devices, allowing serial data transfer through pins like MOSI, MISO, SCK, and SS. How do the UART pins work? The UART pins (RX and TX) are used for serial communication, allowing data transfer between the microcontroller and other serial devices. What are the I2C pins used for? The I2C pins are used for communication over the I2C bus, a protocol for connecting peripheral devices. What is the CAN bus interface used for? The CAN bus interface allows communication with devices using the Controller Area Network (CAN) protocol, typically used in automotive and industrial systems.

How do the Timer pins function on the MC9S12DG128CFUE?

Timer pins are used to generate PWM signals, capture input events, and manage timing operations through the microcontroller's internal timers.

What are the TSI pins used for?

The TSI (Touch Sensing Input) pins are used for capacitive touch sensing applications, enabling touch input without physical buttons.

How does the PLL function in the MC9S12DG128CFUE?

The Phase-Locked Loop (PLL) pin is used for generating high-frequency clock signals, which can be used to drive the microcontroller’s internal clock.

What is the purpose of the VREFH and VREFL pins?

These pins provide high and low reference voltages for the microcontroller's ADC conversion, ensuring accurate analog-to-digital conversion.

How do the Modulation pins work?

The modulation pins are used for generating PWM signals, commonly used for motor control or signal modulation in communication.

What is the role of the ECLK pin?

The ECLK pin is used to input an external clock source into the microcontroller, allowing it to synchronize with external timing sources.

What is the function of the SWDIO and SWCLK pins?

These pins are used for Serial Wire Debug (SWD), a debugging interface for controlling and monitoring the microcontroller during development.

How does the USB interface work on the MC9S12DG128CFUE?

The USB interface pins (USB0DP and USB0DM) are used for data transfer between the microcontroller and USB devices.

What is the NMI pin used for?

The Non-Maskable Interrupt (NMI) pin triggers an interrupt that cannot be disabled by normal interrupt masking, typically used for critical error handling.

What is the RTCOUT pin for?

The RTCOUT pin provides a time or frequency output from the Real-Time Clock (RTC) module .

How are the FTM pins used?

The FlexTimer Module (FTM) pins are used for generating PWM signals, capture events, and other timer-based functionalities.