MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 167

IC MCU 32BIT 256KB FLASH 100LQFP

MCF51EM256CLL

Manufacturer Part Number
MCF51EM256CLL
Description
IC MCU 32BIT 256KB FLASH 100LQFP
Manufacturer
Freescale Semiconductor
Series
MCF51EMr
Datasheets

Specifications of MCF51EM256CLL

Core Processor
Coldfire V1
Core Size
32-Bit
Speed
50MHz
Connectivity
I²C, SCI, SPI
Peripherals
LCD, LVD, PWM, WDT
Number Of I /o
63
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 16x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
100-LQFP
Processor Series
MCF51EM
Core
ColdFire V1
Data Bus Width
32 bit
Data Ram Size
16 KB
Interface Type
RS-232, LIN
Maximum Clock Frequency
50 MHz
Number Of Timers
3
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JLINK-CF-BDM26, EWCF
Development Tools By Supplier
DEMOEM
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCF51EM256CLL
Manufacturer:
FREESCALE
Quantity:
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Part Number:
MCF51EM256CLL
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Chapter 7
Resets, Interrupts, and General System Control
7.1
This section discusses basic reset and interrupt mechanisms and the various sources of reset and interrupt
on an MCF51EM256 series microcontroller. Some interrupt sources from peripheral modules are
discussed in greater detail within other sections of this document. This section gathers basic information
about all reset and interrupt sources in one place for easy reference. A few reset and interrupt sources,
including the computer operating properly (COP) watchdog are not part of on-chip peripheral systems with
their own chapters.
7.2
Reset and interrupt features include:
7.3
Resetting the microcontroller provides a way to start processing from an known set of initial conditions.
When the ColdFire processor exits reset, it fetches initial 32-bit values for the supervisor stack pointer and
program counter from locations 0x(00)00_0000 and 0x(00)00_0004 respectively. On-chip peripheral
modules are disabled and I/O pins are initially configured as general-purpose high-impedance inputs with
pullup devices disabled.
The MCF51EM256 series microcontrollers have the following sources for reset:
Each of these sources, with the exception of the background debug forced reset, has an associated bit in
the system reset status register (SRS).
Freescale Semiconductor
Multiple sources of reset for flexible system configuration and reliable operation
System reset status (SRS) register to indicate source of most recent reset
Separate interrupt vector for most modules (reduces polling overhead) (see
Power-on reset (POR)
External pin reset (PIN)
Computer operating properly (COP) timer
Illegal opcode detect (ILOP)
Illegal address detect (ILAD)
Low-voltage detect (LVD)
Background debug forced reset
Introduction
Features
Microcontroller Reset
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Table
7-1)
7-1

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