Device Description
•
•
•
•
•
•
Two dedicated external interrupt pins
49 General Purpose I/O (GPIO) pins; 28 pins dedicated to GPIO
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-based frequency synthesizer for the core clock
1.1.5
Energy Information
•
•
•
•
•
•
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
1.2 Device Description
The 56F8345 and 56F8145 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 their low cost, configuration flexibility, and compact program code, the 56F8345 and 56F8145 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 (56F8345 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 56F8345 and 56F8145 support program execution from internal 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 49 General Purpose Input/Output (GPIO) lines, depending on peripheral
configuration.
1.2.1
56F8345 Features
The 56F8345 controller includes 128KB of Program Flash and 8KB of Data Flash (each programmable
through the JTAG port) with 4KB of Program RAM and 8KB of Data RAM. A total of 8KB of Boot Flash
is incorporated for easy customer inclusion of field-programmable software routines that can be used to
56F8345 Technical Data, Rev. 17
Freescale Semiconductor
Preliminary
9
FREESCALE [ Freescale ]
