Description

The MC9S12H256VPV microcontroller unit is a 16-bit device that belongs to the Microcontrollers product category. It is composed of standard on-chip peripherals including a 16-bit central processing unit (HCS12 CPU), 256K bytes of Flash EEPROM, 12K bytes of RAM, 4K bytes of EEPROM, two asynchronous serial communications interfaces (SCI), a serial peripheral interface (SPI), an IIC-bus interface (IIC), an 8-channel 16-bit timer (TIM), a 16-channel, 10-bit analog-to-digital converter (ATD), a six-channel pulse width modulator (PWM), and two CAN 2.0 A, B software compatible modules (MSCAN).

Specifications and features

• HCS12 Core
  • 16-bit HCS12 CPU
  • Upward compatible with M68HC11 instruction set
  • Interrupt stacking and programmer’s model identical to M68HC11
  • 20-bit ALU
  • Instruction queue
  • Enhanced indexed addressing
• MEBI (Multiplexed External Bus Interface)
• MMC (Module Mapping Control)
• INT (Interrupt control)
• BKP (Breakpoints)
• BDM (Background Debug Mode)
• CRG (low current oscillator, PLL, reset, clocks, COP watchdog, real time interrupt, clock monitor)
• 8-bit and 4-bit ports with interrupt functionality
  • Digital filtering
  • Programmable rising or falling edge trigger
• Memory
  • 256K Flash EEPROM
  • 4K byte EEPROM
  • 12K byte RAM
• Analog-to-Digital Converter
  • 16 channels, 10-bit resolution
  • External conversion trigger capability
• Two 1M bit per second, CAN 2.0 A, B software compatible modules
  • Five receive and three transmit buffers
  • Flexible identifier filter programmable as 2 x 32 bit, 4 x 16 bit or 8x8bit
  • Four separate interrupt channels for Rx, Tx, error and wake-up
  • Low-pass filter wake-up function
  • Loop-back for self test operation
• Timer
  • 16-bit main counter with 7-bit prescaler
  • 8 programmable input capture or output compare channels
  • Two 8-bit or one 16-bit pulse accumulators
• 6 PWM channels
  • Programmable period and duty cycle
  • 8-bit 6-channel or 16-bit 3-channel
  • Separate control for each pulse width and duty cycle
  • Center-aligned or left-aligned outputs
  • Programmable clock select logic with a wide range of frequencies
  • Fast emergency shutdown input
• Serial interfaces
  • Two asynchronous Serial Communications Interfaces (SCI)
  • Synchronous Serial Peripheral Interface (SPI)
  • Inter-Integrated Circuit interface (IIC)
• Liquid Crystal Display driver with variable input voltage
  • Configurable for up to 32 frontplanes and 4 backplanes or general purpose input or output
  • 5 modes of operation allow for different display sizes to meet application requirements
  • Unused frontplane and backplane pins can be used as general purpose I/O
• 24 high current drivers suited for PWM motor control
  • Each PWM channel switchable between two drivers in an H-bridge configuration
  • Left, right and center aligned outputs
  • Support for sine and cosine drive
  • Dithering
  • Output slew rate control
• 144-Pin or 112-Pin LQFP package
  • I/O lines with 5V input and drive capability
  • 5V A/D converter inputs
  • Operation at 32MHz equivalent to 16MHz Bus Speed
  • Development support
  • Single-wire background debug™ mode (BDM)
  • On-chip hardware breakpoints

Application Scenarios

The MC9S12H256VPV microcontroller can be used in various application scenarios, such as:

• Embedded systems
• Automotive electronics
• Industrial automation
• Robotics
• Home automation
• Consumer electronics

Comparison

• 16-bit HCS12 CPU with enhanced indexed addressing
• 256K bytes of Flash EEPROM
• 12K bytes of RAM
• 6 PWM channels with programmable period and duty cycle
• Two asynchronous Serial Communications Interfaces (SCI)
• Synchronous Serial Peripheral Interface (SPI)
• Inter-Integrated Circuit interface (IIC)
• Support for PWM motor control
• Development support with single-wire background debug™ mode (BDM)
• On-chip hardware breakpoints

• Only supports 5V input and drive capability
• Limited number of I/O lines
• Not suitable for applications requiring higher speed or processing power