MC56F8345VFGE Freescale Semiconductor, MC56F8345VFGE Datasheet - Page 121

IC DSP 16BIT 60MHZ 128-LQFP

MC56F8345VFGE

Manufacturer Part Number
MC56F8345VFGE
Description
IC DSP 16BIT 60MHZ 128-LQFP
Manufacturer
Freescale Semiconductor
Series
56F8xxxr
Datasheet

Specifications of MC56F8345VFGE

Core Processor
56800
Core Size
16-Bit
Speed
60MHz
Connectivity
CAN, EBI/EMI, SCI, SPI
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
49
Program Memory Size
136KB (68K x 16)
Program Memory Type
FLASH
Ram Size
6K x 16
Voltage - Supply (vcc/vdd)
2.25 V ~ 3.6 V
Data Converters
A/D 16x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 105°C
Package / Case
128-LQFP
Data Bus Width
16 bit
Processor Series
MC56F83xx
Core
56800E
Numeric And Arithmetic Format
Fixed-Point
Device Million Instructions Per Second
60 MIPs
Maximum Clock Frequency
60 MHz
Number Of Programmable I/os
49
Data Ram Size
8 KB
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Interface Type
SCI, SPI, CAN
Minimum Operating Temperature
- 40 C
For Use With
MC56F8367EVME - EVAL BOARD FOR MC56F83X
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

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Some applications require the 56800E STOP and WAIT instructions to be disabled. To disable those
instructions, write to the SIM control register (SIM_CONTROL), described in
can be on either a permanent or temporary basis. Permanently assigned applications last only until their
next reset.
6.9 Resets
The SIM supports four sources of reset. The two asynchronous sources are the external RESET pin and
the Power-On Reset (POR). The two synchronous sources are the software reset, which is generated within
the SIM itself by writing to the SIM_CONTROL register, and the COP reset.
Reset begins with the assertion of any of the reset sources. Release of reset to various blocks is sequenced
to permit proper operation of the device. A POR reset is first extended for 2
stabilization of the clock source, followed by a 32 clock window in which SIM clocking is initiated. It is
then followed by a 32 clock window in which peripherals are released to implement Flash security, and,
finally, followed by a 32 clock window in which the core is initialized. After completion of the described
reset sequence, application code will begin execution.
Resets may be asserted asynchronously, but are always released internally on a rising edge of the system
clock.
Part 7 Security Features
The 56F8345/56F8145 offer security features intended to prevent unauthorized users from reading the
contents of the Flash Memory (FM) array. The Flash security consists of several hardware interlocks that
block the means by which an unauthorized user could gain access to the Flash array.
However, part of the security must lie with the user’s code. An extreme example would be user’s code that
dumps the contents of the internal program, as this code would defeat the purpose of security. At the same
time, the user may also wish to put a “backdoor” in his program. As an example, the user downloads a
security key through the SCI, allowing access to a programming routine that updates parameters stored in
another section of the Flash.
7.1 Operation with Security Enabled
Once the user has programmed the Flash with his application code, the device can be secured by
programming the security bytes located in the FM configuration field, which occupies a portion of the FM
array. These non-volatile bytes will keep the part secured through reset and through power-down of the
device. Only two bytes within this field are used to enable or disable security. Refer to the Flash Memory
section in the 56F8300 Peripheral User Manual for the state of the security bytes and the resulting state
of security. When Flash security mode is enabled in accordance with the method described in the Flash
Memory module specification, the device will disable the core EOnCE debug capabilities. Normal
program execution is otherwise unaffected.
Freescale Semiconductor
Preliminary
56F8345 Technical Data, Rev. 17
Part
21
clock cycles to permit
6.5.1. This procedure
Resets
121

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