MC9S12DJ256FS Datasheet, PDF (1/2 Pages) Freescale Semiconductor, Inc – 16-bit Microcontrollers

16-bit Microcontrollers
MC9S12DJ256
Target Applications
> Automotive applications
> Industrial control
Overview
Freescale Semiconductor’s HCS12 family of
microcontrollers (MCUs) is the next generation
of the highly successful 68HC12 architecture.
Using Freescale’s industry-leading 0.25 µs Flash,
the MC9S12DJ256 is part of a pin-compatible
family that scales from 32 KB to 512 KB of
Flash memory. The DJ256 provides an upward
migration path from Freescale’s 68HC08,
68HC11 and 68HC12 architectures for
applications that need larger memory, more
peripherals and higher performance. Also, with
the increasing number of CAN/J1850-based
electronic control units (ECUs), its multiple
network modules support this environment by
enabling highly efficient communications
between different network buses.
2 x SCI
3 x SPI I²C
Vreg 5V to 2.5V
16-Key Wake-Up
IRQ Ports
BDLC
J1850 Interface
5 x CAN
2.0 A/B
HCS12 CPU
256 KB Flash
12 KB RAM
4 KB EEPROM
ATD0
8-ch., 10-bit
ATD1
8-ch., 10-bit
Enhanced Capture Timer
8-ch., 16-bit
PWM
8-ch., 8-bit/4-ch., 16-bit
Features
High-Performance 16-bit HCS12 CPU Core
> 25 MHz bus operation at 5V for 40 ns
minimum instruction cycle time
Benefits
> Opcode compatible with the 68HC11
and 68HC12
> C-optimized architecture produces extremely
compact code
On-Chip Debug Interface
> Dedicated serial debug interface
> On-chip breakpoints
> Real-time in-circuit emulation and debug
without expensive and cumbersome
box emulators
> Read/write memory and registers while
running at full speed
Network Modules
> Two msCAN modules implementing the CAN
2.0 A/B protocol
• Five receive buffers per module with FIFO
storage scheme
• Three transmit buffers per module with
internal prioritization
> One J1850 module
> Ability to link modules for higher buffer count
> Programmable bit rate up to 1 Mbps
> FIFO receive approach superior for
event-driven networks
> Ability to send and receive messages across
an SAE J1850 serial communication network
Integrated Third-Generation Flash Memory
> In-application reprogrammable
> Self-timed, fast programming
• Fast Flash page erase—20 ms (512 bytes)
• Can program 16 bits in 20 µs while
in burst mode
> 5V Flash program/erase/read
> Flash granularity—512 byte Flash erase/
2 byte Flash program
> Four independently programmable Flash arrays
> Flexible block protection and security
> Flexibility to change code in the field
> Efficient end-of-line programming
> Total program time for 256 KB code
is less than 10 seconds
> Reduces production programming cost
through ultra-fast programming
> No external high voltage or charge
pump required
> Virtual EEPROM implementation, Flash array
usable for EE extension
> Can erase one array while executing code
from another
4 KB Integrated EEPROM
> Flexible protection scheme for protection
against accidental program or erase
> EEPROM can be programmed in 46 µs
> Can erase 4 bytes at a time and program
2 bytes at a time for calibration, security,
personality and diagnostic information
10-bit Analog-to-Digital Converter (ADC)
> Two, 8-channel ADCs
> 7 µs, 10-bit single conversion time, scan
mode available
> Fast, easy conversion from analog inputs like
temperature, pressure and fluid levels to digital
values for CPU processing
> Can effectively have 3.5 µs conversion
time by sampling same signal with
both ADCs