Introduction
Overview
The MC9S12E-Family is a 112/80 pin low cost general purpose MCU family. All members of the MC9S12E-Family are comprised of standard on-chip peripherals including a 16-bit central processing unit (HCS12 CPU), up to 256K bytes of Flash EEPROM, up to 16K bytes of RAM, three asynchronous serial communications interface modules (SCI), a serial peripheral interface (SPI), an Inter-IC Bus (IIC), three 4-channel 16-bit timer modules (TIM), a 6-channel 15-bit Pulse Modulator with Fault protection module (PMF), a 6-channel 8-bit Pulse Width Modulator (PWM), a 16-channel 10-bit analog-to-digital converter (ADC), and two 1-channel 8-bit digital-to-analog converters (DAC). The MC9S12E-Family 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 on each module, 16 dedicated I/O port bits are available with Wake-Up capability from STOP or WAIT mode. Furthermore, an on chip bandgap based voltage regulator (VREG) generates the internal digital supply voltage of 2.5V (VDD) from a 3.135V to 5.5V external supply range.

FEATUREs
• 16-bit HCS12 CORE
  – HCS12 CPU
    i. Upward compatible with M68HC11 instruction set
    ii. Interrupt stacking and programmer’s model identical to M68HC11
    iii. Instruction queue
    iv. Enhanced indexed addressing
  – Module Mapping Control (MMC)
  – Interrupt Control (INT)
  – Background Debug Module (BDM)
  – Debugger (DBG12) including breakpoints and change-of-flow trace buffer
  – Multiplexed External Bus Interface (MEBI)
• Wake-Up interrupt inputs
  – Up to 16 port bits available for wake up interrupt function with digital filtering
• Memory options
  – 32K, 64K, 128K or 256K Byte Flash EEPROM
  – 2K, 4K, 8K or 16K Byte RAM
• Two 1-channel Digital-to-Analog Converters (DAC)
  – 8-bit resolution
• Analog-to-Digital Converter (ADC)
  – 16-channel module with 10-bit resolution
  – External conversion trigger capability
• Three 4-channel Timers (TIM)
  – Programmable input capture or output compare channels
  – Simple PWM mode
  – Counter Modulo Reset
  – External Event Counting
  – Gated Time Accumulation
• 6 PWM channels (PWM)
  – 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
• 6-channel Pulse width Modulator with Fault protection (PMF)
  – Three independent 15-bit counters with synchronous mode
  – Complementary channel operation
  – Edge and center aligned PWM signals
  – Programmable dead time insertion
  – Integral reload rates from 1 to 16
  – Four fault protection shut down input pins
  – Three current sense input pins
• Serial interfaces
  – Three asynchronous serial communication interfaces (SCI)
  – Synchronous serial peripheral interface (SPI)
  – Inter-IC Bus (IIC)
• Clock and Reset Generator (CRG)
  – Windowed COP watchdog
  – Real Time interrupt
  – Clock Monitor
  – Pierce or low current Colpitts oscillator
  – Phase-locked loop clock frequency multiplier
  – Self Clock mode in absence of external clock
  – Low power 0.5 to 16Mhz crystal oscillator reference clock
• Operating frequency
  – 50MHz equivalent to 25MHz Bus Speed
• Internal 2.5V Regulator
  – Input voltage range from 3.135V to 5.5V
  – Low power mode capability
  – Includes low voltage reset (LVR) circuitry
  – Includes low voltage interrupt (LVI) circuitry
• 112-Pin LQFP or 80-Pin QFP package
  – Up to 90 I/O lines with 5V input and drive capability (112 pin package)
  – Up to two dedicated 5V input only lines (IRQ and XIRQ)
  – Sixteen 3.3V/5V A/D converter inputs
• Development Support.
  – Single-wire background debugTM mode
  – On-chip hardware breakpoints
  – Enhanced debug features