MCF51EM128CLL Freescale Semiconductor, MCF51EM128CLL Datasheet - Page 405

• Manufacturer Part Number: MCF51EM128CLL
• Description: IC MCU 32BIT 128KB FLASH 100LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF51EMr

Specifications of MCF51EM128CLL

• 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: 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 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: 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: Lead free / RoHS Compliant

The real-time clock interrupt status register (IRTC_ISR) indicates the status of the various real-time clock
interrupts. When an event of the types included in this register occurs then the bit will be set in this register
regardless of its corresponding interrupt enable bit being set. The status bits are cleared by writing a value
of 1, which also clears the interrupt. Interrupts may occur while the system clock is idle or in standby
mode. When the system enters the active power mode, interrupt will be indicated to the CPU.
Tamper interrupt status is set on reset as POR is generated when battery and CPU power are unavailable
and either is powered up. Removal of battery is considered as a tamper and hence this bit is set on reset.
The status register is also cleared on software reset except for the tamper status which remains unaffected.
17.5.12 IRTC Interrupt Enable Register (IRTC_IER)
Freescale Semiconductor
Reset Value
Reset Value
TMPR
Field
STW
ALM
DAY
3
2
1
0
Bit Type
Bit Type
IRTC_IER
Field
Field
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Day Flag. Indicates that the day counter has incremented
Alarm Flag. Indicates that the alarm value programmed matches the counter values. This interrupt is
generated only when the seconds, minutes, hours and days counter match the alarm register values
Countdown Timer Expiry Flag. Indicates that the programmed count in the countdown timer has expired
Tamper Detect Interrupt, indicates that a tamper has been done to the system and security is
compromised. Since POR is considered as a tamper, the reset value is 1.
SAM7
Bit 15
2Hz
Bit 7
rw
rw
0
0
Figure 17-13. IRTC Interrupt Enable Register (IRTC_IER)
SAM6
Bit 14
1Hz
Bit 6
rw
rw
0
0
Table 17-13. IRTC_ISR Field Descriptions
SAM5
Bit 13
MIN
Bit 5
rw
rw
0
0
Interrupt Enable Register
SAM4
Bit 12
Bit 4
HR
rw
rw
0
0
Description
SAM3
Bit 11
DAY
Bit 3
rw
rw
0
0
SAM2
Bit 10
ALM
Bit 2
rw
rw
Independent Robust Real Time Clock (IRTC)
0
0
SAM1
STW
Bit 9
Bit 1
rw
rw
0
0
TMPR
SAM0
Bit 8
Bit 0
Offset: 0x16
rw
rw
0
1
0x16
0x17
17-21