NXP MC9S12H256

MC9S12H256 General Description

OverviewThe MC9S12H256 microcontroller unit (MCU) is a 16-bit device composed of standard on-chipperipherals 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).Features• HCS12 Core– 16-bit HCS12 CPU  i. Upward compatible with M68HC11 instruction set  ii. Interrupt stacking and programmer’s model identical to M68HC11  iii.20-bit ALU  iv. Instruction queue  v. 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

Features

• HCS12 Core
• – 16-bit HCS12 CPU
• i. Upward compatible with M68HC11 instruction set
• ii. Interrupt stacking and programmer’s model identical to M68HC11
• iii.20-bit ALU
• iv. Instruction queue
• v. 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
• – 128K, 256K Flash EEPROM
• – 2K, 4K byte EEPROM
• – 6K, 12K byte RAM
• Analog-to-Digital Converter
• – 8, 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
• 2, 6 PWM channels
• – Programmable period and duty cycle
• – 8-bit 2, 6-channel or 16-bit 1, 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
• 16, 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

• The MC9S12H256 microcontroller is commonly used in various embedded systems and applications, including:
• Automotive systems: Used in automotive control modules, engine management systems, and vehicle communication networks.
• Industrial controls: Used in industrial automation, robotics, process control, and monitoring systems.
• Consumer electronics: Used in home appliances, gaming consoles, and multimedia devices.
• Medical devices: Used in medical instruments and equipment for monitoring, diagnostics, and treatment.
• Communication systems: Used in networking devices, wireless communication modules, and data acquisition systems.
• Security systems: Used in access control systems, surveillance cameras, and alarm systems.
• Smart devices: Used in smart home automation, Internet of Things (IoT) devices, and wearable technology.

Specifications