MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 211
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MCF5272VF66
Manufacturer Part Number
MCF5272VF66
Description
Manufacturer
Freescale
Datasheet
1.MCF5272VF66.pdf
(544 pages)
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
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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
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