MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 211

• Manufacturer Part Number: MCF5272VF66
• Manufacturer: Freescale

Specifications of MCF5272VF66

• Family Name: MCF5xxx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 66MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 3.3V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 196
• Package Type: MA-BGA
• Lead Free Status / RoHS Status: Not Compliant

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