MC9328MX21VG Freescale, MC9328MX21VG Datasheet - Page 49
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MC9328MX21VG
Manufacturer Part Number
MC9328MX21VG
Description
Manufacturer
Freescale
Datasheet
1.MC9328MX21VG.pdf
(100 pages)
Specifications of MC9328MX21VG
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9328MX21VG
Manufacturer:
MUSIC
Quantity:
39
Part Number:
MC9328MX21VG
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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Freescale Semiconductor
1. Precharge cycle timing is included in the write timing diagram.
2. t
Ref
No.
RP
SDCLK
1
2
3
4
5
6
7
8
9
ADDR
DQM
RAS
CAS
and t
WE
DQ
CS
SDRAM clock high-level width
SDRAM clock low-level width
SDRAM clock cycle time
Address setup time
Address hold time
Precharge cycle period
Active to read/write command delay
Data setup time
Data hold time
RCD
= SDRAM clock cycle time. These settings can be found in the i.MX21 reference manual.
BA
4
1
Parameter
3
5
Table 32. SDRAM Write Cycle Timing Parameter
1
Figure 40. SDRAM Refresh Timing Diagram
6
2
MC9328MX21 Technical Data, Rev. 3.4
Minimum
t
3.00
3.00
3.67
2.95
3.41
2.45
t
RCD
7.5
RP
1.8 V ± 0.1 V
2
2
7
Maximum
–
–
–
–
–
–
–
–
–
Minimum
t
t
RCD
7.5
RP
3
3
2
2
2
2
7
3.0 V ± 0.3 V
2
2
ROW/BA
Maximum
–
–
–
–
–
–
–
–
–
Specifications
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
49
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