MCF5407AI220 Freescale Semiconductor, MCF5407AI220 Datasheet - Page 300

• Manufacturer Part Number: MCF5407AI220
• Description: IC MPU 32B 220MHZ COLDF 208-FQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF540xr

Specifications of MCF5407AI220

• Core Processor: Coldfire V4
• Core Size: 32-Bit
• Speed: 220MHz
• Connectivity: EBI/EMI, I²C, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 16
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 208-FQFP
• Maximum Clock Frequency: 220 MHz
• Operating Supply Voltage: 1.8 V, 3.3 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Program Memory Size: 24KB
• Cpu Speed: 220MHz
• Embedded Interface Type: I2C, UART
• Digital Ic Case Style: FQFP
• No. Of Pins: 208
• Supply Voltage Range: 3.3V
• Rohs Compliant: Yes
• For Use With: M5407C3 - KIT EVAL FOR MCF5407 W/ETHERNET
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Synchronous Operation
11.4.4.6 Self-Refresh Operation
Self-refresh is a method of allowing the SDRAM to enter into a low-power state, while at
the same time to perform an internal refresh operation and to maintain the integrity of the
data stored in the SDRAM. The DRAM controller supports self-refresh with DCR[IS].
When IS is set, the
command is sent to the DRAM controller. Figure 11-23 shows the self-refresh operation.
11.4.5 Initialization Sequence
Synchronous DRAMs have a prescribed initialization sequence. The DRAM controller
(DCR[COC] = 0)
11-32
RAS[0] or [1]
RAS[0] or [1]
DRAMW
A[31:0]
DRAMW
CLKIN
SRAS
SCAS
CLKIN
SRAS
SCAS
SCKE
PALL
PALL
SELF
t
t
RCD
NOP
RCD
NOP
= 2
Figure 11-22. Auto-Refresh Operation
= 2
Figure 11-23. Self-Refresh Operation
command is sent to the SDRAM. When IS is cleared, the
SELF
REF
Refresh
MCF5407 User’s Manual
Active
Self-
SELFX
t
RC
NOP
t
RC
= 6
= 6
NOP
Possible
ACTV
ACTV
First
SELFX