MC9S12NE64_06 Datasheet, PDF (19/554 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 1
MC9S12NE64 Device Overview
1.1 Introduction
The MC9S12NE64 is a 112-/80-pin cost-effective, low-end connectivity applications MCU family. The
MC9S12NE64 is composed of standard on-chip peripherals including a 16-bit central processing unit
(HCS12 CPU), 64K bytes of FLASH EEPROM, 8K bytes of RAM, Ethernet media access controller
(EMAC) with integrated 10/100 Mbps Ethernet physical transceiver (EPHY), two asynchronous serial
communications interface modules (SCI), a serial peripheral interface (SPI), one inter-IC bus (IIC), a
4-channel/16-bit timer module (TIM), an 8-channel/10-bit analog-to-digital converter (ATD), up to 21 pins
available as keypad wakeup inputs (KWU), and two additional external asynchronous interrupts. The
inclusion of a PLL circuit allows power consumption and performance to be adjusted to suit operational
requirements. Furthermore, an on-chip bandgap-based voltage regulator (VREG_PHY) generates the
internal digital supply voltage of 2.5 V (VDD) from a 3.15 V to 3.45 V external supply range. The
MC9S12NE64 has full 16-bit data paths throughout. The 112-pin package version has a total of 70 I/O port
pins and 10 input-only pins available. The 80-pin package version has a total of 38 I/O port pins and 10
input-only pins available.
1.1.1 Features
• 16-bit HCS12 core
— HCS12 CPU
– Upward compatible with M68HC11 instruction set
– Interrupt stacking and programmer’s model identical to M68HC11
– Instruction queue
– Enhanced indexed addressing
— Memory map and interface (MMC)
— Interrupt control (INT)
— Background debug mode (BDM)
— Enhanced debug12 module, including breakpoints and change-of-flow trace buffer (DBG)
— Multiplexed expansion bus interface (MEBI) — available only in 112-pin package version
• Wakeup interrupt inputs
— Up to 21 port bits available for wakeup interrupt function with digital filtering
• Memory
— 64K bytes of FLASH EEPROM
— 8K bytes of RAM
• Analog-to-digital converter (ATD)
— One 8-channel module with 10-bit resolution
— External conversion trigger capability
MC9S12NE64 Data Sheet, Rev 1.0
Freescale Semiconductor
19