MCF5272VF66 Freescale Semiconductor, MCF5272VF66 Datasheet - Page 211

• Manufacturer Part Number: MCF5272VF66
• Description: IC MPU 32BIT 66MHZ 196-MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF527xr

Specifications of MCF5272VF66

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 66MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SPI, UART/USART, USB
• Peripherals: DMA, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (4K x 32)
• Program Memory Type: ROM
• Ram Size: 1K x 32
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 196-MAPBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

Figure 9-14
(T1), the SDRAM writes all of its on-chip RAM page buffers back into the SDRAM array. The SDTR[RP]
value determines the number of dead cycles after a precharge. Note that auto refresh occurs in T3.
SDTR[RC] determines the number of clock cycles the SDRAM remains in refresh state, during which time
it cannot accept other commands.
Freescale Semiconductor
SDCR[SLEEP]
A10_PRECHG
Internal Clock
SDADR[13:0]
SDBA[1:0]
SDCLKE
SDCLK
SDWE
SDCS
RAS0
CAS0
shows the timing for entering SDRAM self-refresh mode. During a
T0
MCF5272 ColdFire
Precharge
All Banks NOP
T1
Figure 9-14. Enter SDRAM Self-Refresh Mode
T2
Refresh
®
T3
Self
Integrated Microprocessor User’s Manual, Rev. 3
T4
T5
T6
T7
T8
T9
PRECHARGE ALL
T10
T11
SDRAM Controller
T12
command
T13
9-21