MC9S12H256

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 8 x 8 bit
  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


Pinout




Specifications

Rating	Symbol	Min	Max	Unit
I/O, Regulator and Analog Supply Voltage	VDD5	0.3	6.0	V
Digital Logic Supply Voltage 2	VDD	0.3	3.0	V
PLL Supply Voltage 2	VDDPLL	0.3	3.0	V
Voltage difference VDDX1 to VDDX2 to VDDM and VDDA	DVDDX	0.3	0.3	V
Voltage difference VSSX to VSSR and VSSA	DVSSX	0.3	0.3	V
Digital I/O Input Voltage	VIN	0.3	6.0	V
Analog Reference	VRH, VRL	0.3	6.0	V
XFC, EXTAL, XTAL inputs	VILV	0.3	3.0	V
TEST input	VTEST	0.3	10.0	V
Instantaneous Maximum Current Single pin limit for all digital I/O pins except PU, PV and PW 3	ID	25	+25	mA
Instantaneous Maximum Current Single pin limit for Port PU, PV and PW 4	ID	55	+55	mA
Instantaneous Maximum Current Single pin limit for XFC, EXTAL, XTAL5	IDL	25	+25	mA
Instantaneous Maximum Current Single pin limit for TEST 6	IDT	0.25	0	mA
Storage Temperature Range	Tstg	65	155	°C

NOTES:
1. Beyond absolute maximum ratings device might be damaged.
2. The device contains an internal voltage regulator to generate the logic and PLL supply out of the I/O supply. The absolute maximum ratings apply when the device is powered from an external source.
3. All digital I/O pins are internally clamped to V_SSX1/2 and V_DDX1/2, V_SSM and V_DDM or V_SSA and V_DDA.
4. Ports PU, PV, PW are internally clamped to V_SSM and V_DDM.


Description

The MC9S12H256 microcontroller unit (MCU) is a 16-bit device 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).

The MC9S12H128 microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit (HCS12 CPU), 128K bytes of Flash EEPROM, 6K bytes of RAM, 2K bytes of EEPROM, one asynchronous serial communications interface (SCI), a serial peripheral interface (SPI), an IIC-bus interface (IIC), an 8-channel 16-bit timer (TIM), a 8-channel, 10-bit analog-to-digital converter (ATD), a two-channel pulse width modulator (PWM), and two CAN 2.0 A, B software compatible modules (MSCAN).

In addition, it features a 32x4 liquid crystal display (LCD) controller/driver and a motor pulse width modulator (MC) consisting of 24 high current outputs suited to drive up to 6 stepper motors. System resource mapping, clock generation, interrupt control, and bus interfacing are managed by the HCS12 Core.

The MC9S12H256 has full 16-bit data paths throughout. The inclusion of a PLL circuit allows power consumption and performance to be adjusted to suit operational requirements. In addition to the I/O ports available in each module, 12 general purpose I/O pins are available with interrupt and wake-up capability from STOP or WAIT mode.