Overview
The MC9S12XDT256VAA is a 16-bit microcontroller from Freescale Semiconductor, now part of NXP Semiconductors. This microcontroller is part of the HCS12X family, which offers a high-performance 16-bit CPU core with features that make it suitable for various applications, particularly in automotive and industrial control sectors. The MC9S12XDT256VAA provides an upward migration path from earlier 68HC08, 68HC11, and 68HC12 architectures, offering larger memory, more peripherals, and higher performance.
Key Specifications
| Parameter | Value |
|---|---|
| Maximum Clock Frequency | 80 MHz |
| ADC Resolution | 10 bit |
| Number of I/Os | 59 I/O |
| Supply Voltage - Min | 2.35 V |
| Flash Memory | 256 KB |
| RAM | 12 KB |
| EEPROM | 4 KB |
| Package Type | 80-Lead QFP or 112-Lead LQFP |
| Temperature Range | -40°C to +125°C |
Key Features
- High-Performance 16-bit HCS12 CPU Core: Offers 25 MHz bus operation at 5V with a minimum instruction cycle time of 40 ns. The CPU is opcode compatible with the 68HC11 and 68HC12, and features a C-optimized architecture for compact code generation.
- Analog-to-Digital Converter (ADC): Two 8-channel, 10-bit ADCs with a single conversion time of 7 µs and scan mode available.
- Clock Generation Module with Phase-Lock Loop (PLL): Provides programmable clock frequency with 1024 options, real-time interrupt, and watchdog features.
- Enhanced Capture Timer: 8-channel, 16-bit timer with input capture, output compare, and pulse accumulator functions.
- Pulse-Wide Modulation (PWM): 8-channel, 8-bit or 4-channel, 16-bit PWM for efficient motor control, battery charging, or digital-to-analog functions.
- Serial Communications Interfaces: Includes two CAN 2.0 A/B interfaces, three SPI interfaces, two SCI interfaces, and an I2C interface for high-speed synchronous and asynchronous communication.
- On-Chip Debug Interface: Dedicated serial debug interface with on-chip breakpoints and real-time in-circuit emulation and debug capabilities.
Applications
- Automotive Applications: Suitable for automotive multiplexing, electronic control units (ECUs), and other automotive systems requiring efficient network communications.
- Industrial Control: Used in industrial control systems that require high performance, multiple peripherals, and robust operation.
Q & A
- What is the maximum clock frequency of the MC9S12XDT256VAA?
The maximum clock frequency is 80 MHz.
- How many I/Os does the MC9S12XDT256VAA have?
The microcontroller has 59 I/Os.
- What is the resolution of the ADC in the MC9S12XDT256VAA?
The ADC resolution is 10 bits.
- What types of serial communication interfaces are available on the MC9S12XDT256VAA?
The microcontroller includes two CAN 2.0 A/B interfaces, three SPI interfaces, two SCI interfaces, and an I2C interface.
- What is the memory configuration of the MC9S12XDT256VAA?
The microcontroller has 256 KB of Flash memory, 12 KB of RAM, and 4 KB of EEPROM.
- What are the package options for the MC9S12XDT256VAA?
The microcontroller is available in 80-Lead QFP and 112-Lead LQFP packages.
- What is the temperature range for the MC9S12XDT256VAA?
The temperature range is -40°C to +125°C.
- Does the MC9S12XDT256VAA support on-chip debugging?
Yes, it has a dedicated serial debug interface with on-chip breakpoints and real-time in-circuit emulation and debug capabilities.
- What are some common applications for the MC9S12XDT256VAA?
Common applications include automotive multiplexing, electronic control units (ECUs), and industrial control systems.
- Is the MC9S12XDT256VAA compatible with earlier 68HC12 architectures?
Yes, it provides an upward migration path from earlier 68HC08, 68HC11, and 68HC12 architectures.
