MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 415

• 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

17.5.21 IRTC Tamper Time Stamp Hours & Minutes Register
This register is a used to store the value of hours and minutes counters 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
values of hours and minutes are shown in that format.
Freescale Semiconductor
Reset Value
Reset Value
15–13
Field
IRTC_TTSR_HM
Field (bcd)
Field (bcd)
12–8
Field (bin)
Field (bin)
7–6
5–0
Bit Type
Bit Type
Figure 17-22. IRTC Tamper Time Stamp Hours & Minutes Register (IRTC_TTSR_HM)
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Reserved bits in Binary mode. Read returns zeros. In BCD mode, these are used.
Tamper Detect Hours Value. Count: 0 – 23
Reserved bits in Binary mode. Read returns zeros. In BCD mode, these are used.
Tamper Detect Minutes Value. Count: 0 – 59
Bit 15
rsvd
rsvd
Bit 7
—
—
TIME STAMP MINUTES (tens)
TIME STAMP HOURS (tens)
Bit 14
rsvd
rsvd
Table 17-24. IRTC_TTSR_HM Field Descriptions
Bit 6
—
—
Tamper Time Stamp Hours & Minutes Register
Bit 13
rsvd
Bit 5
—
ro
0
Bit 12
Bit 4
ro
ro
0
0
Description
TIME STAMP MINUTES
Bit 11
Bit 3
ro
ro
0
0
TIME STAMP HOURS
TIME STAMP MINUTES (units)
TIME STAMP HOURS (units)
Bit 10
Bit 2
ro
ro
Independent Robust Real Time Clock (IRTC)
0
0
Bit 9
Bit 1
ro
ro
0
0
Bit 8
Bit 0
Offset: 0x2E
ro
ro
0
0
0x2E
0x2F
17-31