AN1834 Freescale Semiconductor / Motorola, AN1834 Datasheet - Page 23

• Manufacturer Part Number: AN1834
• Description: DSP56300 Using DSP56300 Interactive Timing Diagrams
• Manufacturer: Freescale Semiconductor / Motorola

21 V
22 V
23 V
24 V
25 V
26 V
27 V
28 V
29 V
30 V
31 V
32 V
33 V
34 V
35 V
36 V
37 V
38 V
39 V
40 V
41 V
42 V
43 V
44 V
45 V
46 V
47 V
48 V
49 V
50 V
Row
tRAH
tASC
tCAH
tRAL
tRCS
tRCH
tRRH
tWCH
tWP
tRWL
tCWL
tDS
tDH
tREF1
tREF2
tREF3
tWCS
tCWD
tRWD
tAWD
tCPWD
tCSR
tCHR
tRPC
tCPA
tPC
tPRWC
tCP
tRASP
tRHCP
Name
Using DSP56300 Interactive Timing Diagrams
Table 5.
Freescale Semiconductor, Inc.
[10,]
[0,]
[10,]
[30,]
[0,]
[0,]
[0,]
[10,]
[10,]
[15,]
[15,]
[0,]
[10,]
[,16000000]
[,64000000]
[,128000000
]
[0,]
[40,]
[85,]
[55,]
[60,]
[5,]
[10,]
[5,]
[,35]
[40,]
[80,]
[10,]
[60,200000] 60
[35,]
For More Information On This Product,
Formula
DRAM Library for 60-ns EDO DRAM
Go to: www.freescale.com
10
0
10
30
0
0
0
10
10
15
15
0
10
0
40
85
55
60
5
10
5
40
80
10
35
Min
16000000
64000000
128000000 Refresh period (L-ver)
35
200000
Max
Row address hold time
Column address set-up time
Column address hold time
Column address to /RAS lead time
Read command set-up time
Read command hold time referenced to /CAS
Read command hold time referenced to /RAS
Write command hold time
Write command pulse width
Write command to /RAS lead time
Write command to /CAS lead time
Data set-up time
Data hold time
Refresh period (1K, Normal)
Refresh period (4K, Normal)
Write command set-up time
/CAS to /W delay time
/RAS to /W delay time
Column address to /W delay time
/CAS precharge to /W delay time
/CAS set-up time (/CAS before /RAS refresh)
/CAS hold time (/CAS before /RAS refresh)
/RAS to /CAS precharge time
Access time from /CAS precharge
Fast Page mode cycle time
Fast Page read-modify-write cycle time
/CAS precharge time (Fast Page cycle)4
/RAS pulse width (Fast Page cycle)
/RAS hold time from /CAS precharge
(Continued)
Comment
DSP-to-DRAM Analysis
23