●Introduction
●The 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
●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 or 128K Byte Flash EEPROM
●— 2K, 4K or 8K 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 or 64-Pin QFN 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
