MC9328MX1 Datasheet, PDF (78/96 Pages) Freescale Semiconductor, Inc – i.MX Integrated Portable System Processor

Specifications
Table 35. SDRAM Write Timing Parameter Table (Continued)
1.8V
3.3V
Ref
No.
Parameter
Unit
Minimum Maximum Minimum Maximum
8 Data setup time
4.0
–
2
–
ns
9 Data hold time
2.28
–
2
–
ns
1. Precharge cycle timing is included in the write timing diagram.
2. t_RP and t_RCD = SDRAM clock cycle time. These settings can be found in the MC9328MX1 reference
manual.
SDCLK
CS
13
2
RAS
6
CAS
WE
4
5
ADDR
BA
DQ
7
7
ROW/BA
DQM
Figure 59. SDRAM Refresh Timing Diagram
Table 36. SDRAM Refresh Timing Parameter Table
1.8V
3.3V
Ref
No.
Parameter
Unit
Minimum Maximum Minimum Maximum
1 SDRAM clock high-level width
2.67
–
4
–
ns
MC9328MX1 Advance Information, Rev. 4
78
Freescale Semiconductor