MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 414

• 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

Independent Robust Real Time Clock (IRTC)
17.5.20 IRTC Tamper Time Stamp Day Register (IRTC_TTSR_DAY)
This register is a used to store the value of days counter when a tamper is detected. This register serves as
a purpose for CPU to know when a tamper had occurred. This register is has no effect on software reset.
The value shown in this register is for recent tamper detection only. Previous intrusions cannot be detected.
Writing to this register has no effect and is a read only register. In BCD mode, the value of days counter is
shown in that format.
17-30
Reset Value
Reset Value
IRTC_TTSR_DAY
Field (bcd)
Field (bcd)
Field
15–8
Field (bin)
Field (bin)
7–5
4–0
Bit Type
Bit Type
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Figure 17-21. IRTC Tamper Time Stamp Day Register (IRTC_TTSR_DAY)
Reserved bits. Read returns zeros. Not Writeable
Reserved bits in Binary mode. Read returns zeros. In BCD mode, these are used.
Tamper Detect Days Value. Count: 1 – 31
Bit 15
rsvd
rsvd
Bit 7
—
—
TIME STAMP DAY (tens)
Table 17-23. IRTC_TTSR_DAY Field Descriptions
Bit 14
rsvd
rsvd
Bit 6
—
—
Bit 13
rsvd
Bit 5
—
ro
0
Tamper Time Stamp Day Register
Bit 12
rsvd
Bit 4
—
ro
0
Description
Bit 11
rsvd
Bit 3
—
ro
0
TIME STAMP DAY
TIME STAMP DAY (units)
Bit 10
rsvd
Bit 2
—
ro
0
rsvd
Bit 9
Bit 1
—
ro
0
Freescale Semiconductor
rsvd
Bit 8
Bit 0
—
ro
1
Offset: 0x2C
0x2C
0x2D