MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 631

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

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

The move-to-SR, STLDSR, and RTE instructions include an optional PST = 0x3 value, indicating an entry
into user mode.
Similar to the exception processing mode, the stopped state (PST = 0x1E) and the halted state
(PST = 0x1F) display this status for two entries when the ColdFire processor enters the given mode.
26.4.4
Typically, a relatively simple interface pod is used to translate commands from a host computer into
commands for the custom serial interface to the single-wire background debug system. Depending on the
development tool vendor, this interface pod may use a standard RS-232 serial port, a parallel printer port,
or some other type of communications such as a universal serial bus (USB) to communicate between the
host PC and the pod. The pod typically connects to the target system with ground, the BKGD pin, RESET,
and sometimes V
useful to regain control of a lost target system or to control startup of a target system before the on-chip
nonvolatile memory has been programmed. Sometimes V
from the target system to avoid the need for a separate power supply. However, if the pod is powered
separately, it can be connected to a running target system without forcing a target system reset or otherwise
disturbing the running application program.
Freescale Semiconductor
rte
stldsr.w
stop
wdebug.l
Instruction
Table 26-29. PST/DDATA Specification for Supervisor-Mode Instructions (continued)
Freescale-Recommended BDM Pinout
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
DD
#imm
#<data>
<ea>y
Operand Syntax
. An open-drain connection to reset allows the host to force a target system reset,
Figure 26-26. Recommended BDM Connector
PST = 0x07, {PST = 0x0B, DD = source operand}, {PST = 0x03}, {PST = 0x0B,
PST = 0x05, {PST = 0x0[DE], DD = target address}
PST = 0x01, {PST = 0x0B, DD = destination operand, PST = 0x03}
PST = 0x1E,
PST = 0x1E
PST = 0x01, {PST = 0x0B, DD = source, PST = 0x0B, DD = source}
DD = source operand},
No Connect
No Connect
BKGD
1
3
5
2
4
6
DD
GND
RESET
V
DD
can be used to allow the pod to use power
PST/DDATA
Version 1 ColdFire Debug (CF1_DEBUG)
26-67