Introduction nThe MC9S12E128 is a 112/80/64 pin low cost general purpose MCU comprised of standard on-chip peripherals including a 16-bit central processing unit (HCS12 CPU), up to 128K bytes of Flash EEPROM, up to 8K 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 MC9S12E128 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 nthe internal digital supply voltage of 2.5V (VDD) from a 3.135V to 5.5V external supply range.nFeatures n• 16-bit HCS12 CORE n— HCS12 CPU n– i. Upward compatible with M68HC11 instruction set n– ii. Interrupt stacking and programmer’s model identical to M68HC11 n– iii. Instruction queue n– iv. Enhanced indexed addressing n— Module Mapping Control (MMC) n— Interrupt control (INT) n— Background Debug Module (BDM) n— Debugger (DBG12) including breakpoints and change-of-flow trace buffer n— Multiplexed External Bus Interface (MEBI) n• Wake-Up interrupt inputs n— Up to 16 port bits available for wake up interrupt function with digital filtering n• Memory Options n— 32K, 64K or 128K Byte Flash EEPROM n— 2K, 4K or 8K Byte RAM n• Two 1-channel Digital-to-Analog Converters (DAC) n— 8-bit resolution n• Analog-to-Digital Converter (ADC) n— 16-channel module with 10-bit resolution n— External conversion trigger capability n• Three 4-channel Timers (TIM) n— Programmable input capture or output compare channels n— Simple PWM mode n— Counter modulo reset n— External event counting n— Gated time accumulation n• 6 PWM channels (PWM) n— Programmable period and duty cycle n— 8-bit 6-channel or 16-bit 3-channel n— Separate control for each pulse width and duty cycle n— Center-aligned or left-aligned outputs n— Programmable clock select logic with a wide range of frequencies n— Fast emergency shutdown input n• 6-channel Pulse width Modulator with Fault protection (PMF) n— Three independent 15-bit counters with synchronous mode n— Complementary channel operation n— Edge and center aligned PWM signals n— Programmable dead time insertion n— Integral reload rates from 1 to 16 n— Four fault protection shut down input pins n— Three current sense input pins n• Serial interfaces n— Three asynchronous serial communication interfaces (SCI) n— Synchronous serial peripheral interface (SPI) n— Inter-IC Bus (IIC) n• Clock and Reset Generator (CRG) n— Windowed COP watchdog n— Real Time interrupt n— Clock Monitor n— Pierce or low current Colpitts oscillator n— Phase-locked loop clock frequency multiplier n— Self Clock mode in absence of external clock n— Low power 0.5 to 16Mhz crystal oscillator reference clock n• Operating frequency n— 50MHz equivalent to 25MHz Bus Speed n• Internal 2.5V Regulator n— Input voltage range from 3.135V to 5.5V n— Low power mode capability n— Includes low voltage reset (LVR) circuitry n— Includes low voltage interrupt (LVI) circuitry n• 112-Pin LQFP or 80-Pin QFP or 64-Pin QFN package n— Up to 90 I/O lines with 5V input and drive capability (112 pin package) n— Up to two dedicated 5V input only lines (IRQ and XIRQ) n— Sixteen 3.3V/5V A/D converter inputs n• Development Support. n— Single-wire background debugTM mode n— On-chip hardware breakpoints n— Enhanced debug features
