●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
