MCF51EM128CLK Freescale Semiconductor, MCF51EM128CLK Datasheet - Page 424

• Manufacturer Part Number: MCF51EM128CLK
• Description: IC MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF51EMr

Specifications of MCF51EM128CLK

• Core Processor: Coldfire V1
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LCD, LVD, PWM, WDT
• Number Of I /o: 56
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 12x16b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-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: TWR-MCF51CN-KIT, TWR-SER, TWR-ELEV, TOWER
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Independent Robust Real Time Clock (IRTC)
Figure 17-29. Write Protect State Machine
17.8.3
Tamper Detection Logic
The tamper detect mechanism has been provided to detect any intrusion made to system. The tamper logic
monitors for 3 conditions of tampering as explained below.
Tamper Condition 1: Battery removed when MCU is powered OFF: The detection of battery removal
during system power off is done using a flop that is asserted on power-on reset. Since there is no difference
between a proper shutdown and this tamper condition, this is considered as a tamper always. Now it is up
to the firmware to differentiate between the tamper condition and normal power up. One way is to ignore
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
17-40
Freescale Semiconductor