MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 440

• 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

16-Bit Modulo Timer (MTIM16)
19.4.1
MTIMxSC contains the overflow status flag and control bits. These are used to configure the interrupt
enable, reset the counter, and stop the counter.
19.4.2
MTIMxCLK contains the clock select bits (CLKS) and the prescaler select bits (PS).
19-4
TRST
TSTP
Field
TOIE
TOF
3:0
7
6
5
4
Reset:
Reset:
W
W
R
R
MTIM16 Overflow Flag — This bit is set when the MTIM16 counter register overflows to 0x0000 after reaching the
value in the MTIM16 modulo register. Clear TOF by reading the MTIMxSC register while TOF is set, then writing a
0 to TOF. Writing a 1 has not effect. TOF is also cleared when TRST is written to a 1.
0 MTIM16 counter has not reached the overflow value in the MTIM16 modulo register.
1 MTIM16 counter has reached the overflow value in the MTIM16 modulo register.
MTIM16 Overflow Interrupt Enable — This read/write bit enables MTIM16 overflow interrupts. If TOIE is set, then
an interrupt is generated when TOF = 1. Reset clears TOIE. Do not set TOIE if TOF = 1. Clear TOF first, then set
TOIE.
0 TOF interrupts are disabled. Use software polling.
1 TOF interrupts are enabled.
MTIM16 Counter Reset — When an 1 is written to this write-only bit, the MTIM16 counter register resets to 0x0000
and TOF is cleared. Writing an 1 to this bit also makes the modulo value to take effect at once. Reading this bit
always returns 0.
0 No effect. MTIM16 counter remains in its current state.
1 MTIM16 counter is reset to 0x0000.
MTIM16 Counter Stop — When set, this read/write bit stops the MTIM16 counter at its current value.Counting
resumes from the current value when TSTP is cleared.Reset sets TSTP to prevent the MTIM16 from counting.
0 MTIM16 counter is active.
1 MTIM16 counter is stopped.
Unused register bits, always read 0.
MTIMx16 Status and Control Register (MTIMxSC)
MTIM16 Clock Configuration Register (MTIMxCLK)
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
TOF
7
0
7
0
0
Figure 19-3. MTIM16 Clock Configuration Register (MTIMxCLK)
Figure 19-2. MTIM16 Status and Control Register (MTIMxSC)
TOIE
0
0
0
6
6
Table 19-2. MTIMxSC Field Descriptions
TRST
0
0
0
5
5
CLKS
TSTP
1
0
4
4
Description
0
0
0
3
3
0
0
0
2
2
PS
Freescale Semiconductor
0
0
0
1
1
0
0
0
0
0