MC56F8346 Freescale Semiconductor, Inc, MC56F8346 Datasheet - Page 9

• Manufacturer Part Number: MC56F8346
• Description: 56f8300 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

1.1.5
1.2 Device Description
The 56F8346 and 56F8146 are members of the 56800E core-based family of controllers. Each combines,
on a single chip, the processing power of a Digital Signal Processor (DSP) and the functionality of a
microcontroller with a flexible set of peripherals to create an extremely cost-effective solution. Because
of its low cost, configuration flexibility, and compact program code, the 56F8346 and 56F8146 are
well-suited for many applications. The devices include many peripherals that are especially useful for
motion control, smart appliances, steppers, encoders, tachometers, limit switches, power supply and
control, automotive control (56F8346 only), engine management, noise suppression, remote utility
metering, industrial control for power, lighting, and automation applications.
The 56800E core is based on a Harvard-style architecture consisting of three execution units operating in
parallel, allowing as many as six operations per instruction cycle. The MCU-style programming model and
optimized instruction set allow straightforward generation of efficient, compact DSP and control code.
The instruction set is also highly efficient for C/C++ Compilers to enable rapid development of optimized
control applications.
The 56F8346 and 56F8146 support program execution from either internal or external memories. Two
data operands can be accessed from the on-chip data RAM per instruction cycle. These devices also
provide two external dedicated interrupt lines and up to 62 General Purpose Input/Output (GPIO) lines,
depending on peripheral configuration.
Freescale Semiconductor
Preliminary
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Two Serial Communication Interfaces (SCIs), each with two pins (or four additional GPIO lines)
Up to two Serial Peripheral Interfaces (SPIs), both with configurable 4-pin port (or eight additional GPIO
lines)
— In the 56F8346, SPI1 can also be used as Quadrature Decoder 1 or Quad Timer B
— In the 56F8146, SPI1 can alternately be used only as GPIO
Computer Operating Properly (COP)/Watchdog timer
Two dedicated external interrupt pins
62 General Purpose I/O (GPIO) pins
External reset input pin for hardware reset
External reset output pin for system reset
Integrated low-voltage interrupt module
JTAG/Enhanced On-Chip Emulation (OnCE) for unobtrusive, processor speed-independent, real-time
debugging
Software-programmable, Phase Lock Loop (PLL)-based frequency synthesizer for the core clock
Fabricated in high-density CMOS with 5V-tolerant, TTL-compatible digital inputs
On-board 3.3V down to 2.6V voltage regulator for powering internal logic and memories; can be disabled
On-chip regulators for digital and analog circuitry to lower cost and reduce noise
Wait and Stop modes available
ADC smart power management
Each peripheral can be individually disabled to save power
Energy Information
56F8346 Technical Data, Rev. 15
Device Description
9