Device User Guide , Inc

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. By Freescale Semiconductor, Inc
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