参数资料
型号: MCF5372LCVM240
厂商: Freescale Semiconductor
文件页数: 16/46页
文件大小: 0K
描述: IC MPU RISC 240MHZ 196-MAPBGA
产品培训模块: ColdFire® Embedded Voice Solution
标准包装: 126
系列: MCF537x
核心处理器: Coldfire V3
芯体尺寸: 32-位
速度: 240MHz
连通性: EBI/EMI,以太网,I²C,SPI,SSI,UART/USART,USB,USB OTG
外围设备: DMA,POR,PWM,WDT
输入/输出数: 62
程序存储器类型: ROMless
RAM 容量: 32K x 8
电压 - 电源 (Vcc/Vdd): 1.4 V ~ 3.6 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 196-LBGA
包装: 托盘
Electrical Characteristics
MCF537x ColdFire Microprocessor Data Sheet, Rev. 4
Freescale Semiconductor
23
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:
MCF53721CVM240,
MCF5372LCVM240,
MCF5373LCVM240
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