MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 411

• 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

This register stores the month when the Daylight Saving has to be applied or reversed. The CPU should
program the correct month value (1–12) as per the regional settings. For example, if the daylight saving
starts at March 25 and ends at October 28 in 2007. Hence the CPU should write 0x030A in this register.
This register has no effect of software reset.
17.5.17 IRTC Daylight Saving Day Register (IRTC_DST_DAY)
This register stores the day when the Daylight Saving has to be applied or reversed. The CPU should
program the correct day value (1 – 31) as per the regional settings. For example, if the Daylight Saving
starts at March 25 and ends at October 28 in 2007. Hence the CPU should write 0x191C in this register.
This register is unaffected by software reset. In BCD mode, all 8-bits are used to indicate the day value.
Freescale Semiconductor
DST_END_MONTH
DST_START_DAY
DST_END_DAY
Reset Value
Reset Value
15–12
Field
Field (bcd)
Field (bcd)
11–8
IRTC_DST_DAY
Field (bin)
Field (bin)
7–4
3–0
7–4
3–0
Bit Type
Bit Type
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Bit 15
rsvd
rsvd
Reserved bits in Binary mode. Read returns zeros. In BCD mode, these are used.
Day value when Daylight saving has to start. Valid values: 1 – 31
Reserved bits in Binary mode. Read returns zeros. In BCD mode, these are used.
Day value when Daylight saving has to end. Valid values: 1 – 31
Bit 7
—
—
Figure 17-18. IRTC Daylight Saving Day Register (IRTC_DST_DAY)
Reserved bits. Read returns zeros.
Month value when Daylight saving has to end. Valid values: 0–12
DST_START_DAY (tens)
DST_END_DAY (tens)
Table 17-19. IRTC_DST_MNTH Field Descriptions
Bit 14
rsvd
rsvd
Bit 6
Table 17-20. IRTC_DST_DAY Field Descriptions
—
—
Bit 13
rsvd
rsvd
Bit 5
—
—
Daylight Saving Day Register
Bit 12
Bit 4
rw
rw
0
0
Description
Bit 11
Bit 3
rw
rw
0
0
DST_START_DAY
DST_END_DAY
DST_START_DAY (units)
DST_END_DAY (units)
Bit 10
Bit 2
rw
rw
Independent Robust Real Time Clock (IRTC)
0
0
Bit 9
Bit 1
rw
rw
0
0
Bit 8
Bit 0
Offset: 0x26
rw
rw
0
0
0x26
0x27
17-27