Datasheet
Overview
Freescale Semiconductor’s
highly integrated MC9S12XA
microcontroller family is one of
the first families to use the
high-performance 16-bit
HCS12X core. The S12X family
delivers 32-bit performance
with all the advantages and
efficiencies of a 16-bit MCU.
Based on an enhanced HCS12
core, the S12XA family delivers
two to five times the
performance of a 25 MHz
HCS12 while retaining code
compatibility for easy migration.
The family introduces the
performance-boosting XGATE
module, which off-loads the
CPU by providing high-speed
data processing and transfer
between peripheral modules,
RAM and I/O ports.
The family’s core meets the
robust requirements of the
industrial markets by using
Freescale’s industry-leading,
full automotive specification
SG-Flash and further
integrating static random
access memory (SRAM) and
electronically erasable
programmable read-only
memory (EEPROM) with
multiple serial communication
peripherals controllers, a range
of timers, pulse-width
modulation (PWM) channels,
general I/O channels and an
analog-to-digital converter
(ADC). The family is
available in a range of quad
flat packs (QFP) and
temperature variants
allowing for flexibility
in design.
High-Performance 16-bit Microcontrollers
10-bit ADC
8-bit or 16-bit
PWM Timer
I
2
Cs
SCIs
SPIs
Expanded Bus Interface
CPU
Debug
INT
Flash
EEPROM
RAM
XGATE Coprocessor
Enhanced
Capture Timer
PI Timer
GPIO
MCS12XA FAMILY PRODUCT EXAMPLE
Target Applications
> Industrial motor control
> Health care monitoring systems/
home health products
> Programmable logic controller
> Security-related applications
and access control
> Factory automation
> HVAC/building control
actuators and sensors
> Industrial control panels
16-bit Enhanced S12 CPU Core
> C-optimized CISC architecture
produces extremely compact code
> Excellent 32-bit calculations and semaphore handling
> Access to large data segments independent of PPAGE
> Up to 40 MHz bus operation
> Opcode compatible with the 68HC11, 68HC12 and HCS12
> Industry-leading EMC performance
> 3V to 5.5V operation
> Wide range of high-performance peripherals
MC9S12XA512/256