MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 506

• 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

Programmable Delay Block (PDB)
22-6
RESERVED
PRESCALE
TRIGSEL
SWTRIG
CONT
15:13
Field
12:8
4:2
EN
IF
IE
R
7
6
5
1
0
Clock Prescaler Select
000 = timer uses peripheral clock
001 = timer uses peripheral clock / 2
010 = timer uses peripheral clock / 4
011 = timer uses peripheral clock / 8
100 = timer uses peripheral clock / 16
101 = timer uses peripheral clock / 32
110 = timer uses peripheral clock / 64
111 = timer uses peripheral clock / 128
RESERVED. Write these register bits as zero.
Interrupt Flag
0 = A comparison event has not been detected (The count value has equaled IDELAY at some point)
1 = A comparison event has been detected (In this, or a previous PDB cycle, the count has equaled IDELAY)
If the module is enabled (EN=1) and the interrupt enable (IE) bit has been set, an interrupt will be issued when
the IF bit is set. This bit can be cleared by writing a one to it. The IF bit will be set (when COUNT=IDELAY)
regardless of whether or not the interrupt has been enabled.
Continuous Mode Enable
0 = Module is in OneShot mode
1 = Module is in continuous mode
Software Trigger — When TRIGSEL=3’b111 and the module is enabled, writing a one to this field will trigger a
reset and restart of the counter. Alternately, if TriggerA or TriggerB are bypassed, it will propagate there
immediately. This bit always reads as zero.
Input Trigger Select
000 = Comparator 1 output
001 = Comparator 2 output
100 = EXTRIG
111 = SWTRIG
All other values are reserved.
IDelay match Interrupt Enable
0 = IDelay Interrupt is not enabled
1 = IDelay Interrupt is enabled
Note: This bit does not affect the sequence error interrupt. The sequence error interrupt is always enabled, when
the PDB is enabled.
PDB Enable
0 = Module Counter is Disabled
1 = Module Counter is Enabled
Setting EN=0 will set the count register to zero.
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Table 22-2. PDBSC Register Field Descriptions
Description
Freescale Semiconductor