SPC5200CBV400 Freescale Semiconductor, SPC5200CBV400 Datasheet - Page 20

• Manufacturer Part Number: SPC5200CBV400
• Description: IC MPU 32BIT 400MHZ 272-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of SPC5200CBV400

• Processor Type: MPC52xx PowerPC 32-Bit
• Speed: 400MHz
• Voltage: 1.5V
• Mounting Type: Surface Mount
• Package / Case: 272-PBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

20
Sample position A: data are sampled on the expected edge of MEM_CLK, the MDQS signal indicate the valid data
Sample position B: data are sampled on a later edge of MEM_CLK, SDRAM controller is waiting for the valid MDQS signal
NOTE: Control Signals signals are composed of RAS, CAS, MEM_WE, MEM_CS, MEM_CS1 and CLK_EN
MDQS (Data Strobe)
MBA (Bank Selects)
Sample Window
MDQS (Data Strobe)
Sample Window
MA (Address)
Control Signals
MDQ (Data)
Read Data
MDQ (Data)
Read Data
MEM_CLK
MEM_CLK
t
t
valid
valid
Figure 7. Timing Diagram—DDR SDRAM Memory Read Timing
t
valid
Active
Row
t
t
t
hold
hold
hold
NOP
MPC5200B Data Sheet, Rev. 4
Column
READ
t
data_sample_min
t
data_valid_min
NOP
t
data_valid_min
0.5
× t
MEM_CLK
NOP
t
data_sample_max
t
data_valid_max
NOP
t
t
data_sample_max
data_sample_min
t
data_valid_max
NOP
Freescale Semiconductor
NOP
Sample
position
Sample
position
A
B