Details

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BUY MC9S12A256CFUE https://www.utsource.net/itm/p/6347546.html
MCU 256K FLASH 25MHZ 80-QFP

Parameter	Description	Value	Unit
Device Type	Microcontroller	MC9S12A256CFUE	-
Architecture	CPU	HCS12	-
Clock Speed	Maximum Clock Frequency	80	MHz
Flash Memory	Program Memory	256	KB
RAM	Data Memory	16	KB
EEPROM	Non-Volatile Data Storage	4	KB
Voltage Supply (VDD)	Operating Voltage Range	4.5 to 5.5	V
Current Consumption	Active Mode	10	mA/MHz
Temperature Range	Operating Temperature	-40 to +125	°C
Package Type	Package	LQFP-64	-
Pin Count	Number of Pins	64	-
I/O Ports	General Purpose I/O Pins	47	-
Timers	Timer Modules	2 x 16-bit, 1 x 8-bit	-
Serial Communication	UARTs	2	-
SPI	Serial Peripheral Interface	1	-
I2C	Inter-Integrated Circuit	1	-
CAN	Controller Area Network	1	-
ADC	Analog-to-Digital Converter	8-channel, 10-bit	-
DAC	Digital-to-Analog Converter	1-channel, 8-bit	-
Watchdog Timer	Watchdog Timer	Yes	-
Brownout Reset	Brownout Detection	Yes	-
Low Power Modes	Low Power Modes	Idle, Wait, Stop	-

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (VDD) is within the operating range of 4.5 to 5.5V.
   • Connect the power supply to the VDD and GND pins as specified in the datasheet.

2. Clock Configuration:

   • The device supports both internal and external clock sources. For external clock sources, connect the oscillator to the appropriate pins (XTAL1 and XTAL2).
   • Set the clock prescaler and system clock divider in the System Initialization Register (SIR) to achieve the desired clock frequency.

3. Memory Initialization:

   • Flash memory can be programmed using the onboard bootloader or an external programmer.
   • RAM and EEPROM should be initialized at the start of the program to ensure proper operation.

4. I/O Configuration:

   • Configure the I/O ports using the Port Control Registers (PCR) to set the direction (input/output) and initial state.
   • Enable pull-up resistors if needed by setting the appropriate bits in the Pull-Up Control Register (PPCR).

5. Peripheral Setup:

   • Initialize the serial communication interfaces (UART, SPI, I2C, CAN) by configuring the corresponding control registers.
   • Set up the ADC and DAC by selecting the channels and configuring the conversion modes.
   • Configure the timers by setting the prescaler, period, and interrupt enable bits.

6. Interrupt Handling:

   • Enable interrupts by setting the appropriate bits in the Interrupt Enable Register (IER).
   • Write interrupt service routines (ISRs) to handle specific events and map them to the interrupt vectors.

7. Low Power Modes:

   • Enter low power modes (Idle, Wait, Stop) by writing to the Power Control Register (PCR) to reduce power consumption.
   • Ensure that the necessary wake-up sources are configured before entering these modes.

8. Debugging:

   • Use the Background Debug Mode (BDM) interface for debugging purposes. Connect a debugger to the BDM pins and use a debugger software to step through the code and inspect variables.

9. Programming and Testing:

   • Program the device using an in-circuit programmer or the onboard bootloader.
   • Test the functionality of the microcontroller by running a simple test program and verifying the outputs on the I/O pins.

For detailed information and specific register settings, refer to the MC9S12A256CFUE datasheet and application notes provided by the manufacturer.

(For reference only)