參數(shù)資料
型號: MCF5328CVM240
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 240 MHz, RISC PROCESSOR, PBGA256
封裝: 17 X 17 MM, ROHS COMPLIANT, MAPBGA-256
文件頁數(shù): 18/50頁
文件大小: 1114K
代理商: MCF5328CVM240
Electrical Characteristics
MCF532x ColdFire Microprocessor Data Sheet, Rev. 5
Freescale Semiconductor
25
Figure 10. SDR Read Timing
5.7.2
DDR SDRAM AC Timing Characteristics
When using the SDRAM controller in DDR mode, the following timing numbers must be followed to properly latch or drive
data onto the memory bus. All timing numbers are relative to the four DQS byte lanes.
Table 11. DDR Timing Specifications
Num
Characteristic
Symbol
Min
Max
Unit
Frequency of Operation
tDDCK
60
80
Mhz
DD1
Clock Period1
tDDSK
12.5
16.67
ns
DD2
Pulse Width High2
tDDCKH
0.45
0.55
SD_CLK
DD3
Pulse Width Low3
tDDCKL
0.45
0.55
SD_CLK
DD4
Address, SD_CKE, SD_CAS, SD_RAS, SD_WE,
SD_CS[1:0] - Output Valid3
tSDCHACV
0.5
× SD_CLK
+1.0
ns
DD5
Address, SD_CKE, SD_CAS, SD_RAS, SD_WE,
SD_CS[1:0] - Output Hold
tSDCHACI
2.0
ns
DD6
Write Command to first DQS Latching Transition
tCMDVDQ
1.25
SD_CLK
DD7
Data and Data Mask Output Setup (DQ-->DQS) Relative
to DQS (DDR Write Mode)4, 5
tDQDMV
1.5
ns
SD_CLK
SD_CSn,
SDDM
D[31:0]
A[23:0],
SD_RAS,
SD_BA[1:0]
CMD
ROW
SD1
SD4
COL
WD1
WD2
WD3
WD4
SD9
3/4 MCLK
SD_SDR_DQS
SD_DQS[3:2]
Delayed
SD10
SD7
Board Delay
SD8
Board Delay
SD6
tDQS
Reference
SD_CLK
from
Memories
(Measured at Output Pin)
(Measured at Input Pin)
SD5
NOTE: Data driven from memories relative
to delayed memory clock.
SD_WE
SD_CAS,
SD2
SD3
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MCF5327CVM240,
MCF53281CVM240,
MCF5328CVM240,
MCF5329CVM240
相關(guān)PDF資料
PDF描述
MCF5329CVM240 32-BIT, 240 MHz, RISC PROCESSOR, PBGA256
MCF5328CVM240J 32-BIT, 240 MHz, RISC PROCESSOR, PBGA256
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MCF53281CVM240 32-BIT, 240 MHz, RISC PROCESSOR, PBGA256
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