MC9328MX1 Datasheet, PDF (79/96 Pages) Freescale Semiconductor, Inc – i.MX Integrated Portable System Processor

Specifications
Table 36. SDRAM Refresh Timing Parameter Table (Continued)
1.8V
3.3V
Ref
No.
Parameter
Unit
Minimum Maximum Minimum Maximum
2 SDRAM clock low-level width
6
–
4
–
ns
3 SDRAM clock cycle time
10.4
–
10
–
ns
4 Address setup time
3.42
–
3
–
ns
5 Address hold time
2.28
–
2
–
ns
6 Precharge cycle period
t_RP1
–
t_RP1
–
ns
7 Auto precharge command period
t_RC1
–
t_RC1
–
ns
1. t_RP and t_RC = SDRAM clock cycle time. These settings can be found in the MC9328MX1 reference
manual.
SDCLK
CS
RAS
CAS
WE
ADDR
BA
DQ
DQM
CKE
Figure 60. SDRAM Self-Refresh Cycle Timing Diagram
MC9328MX1 Advance Information, Rev. 4
Freescale Semiconductor
79