HYB25D256400BT Datasheet, PDF (76/77 Pages) Infineon Technologies AG – 256-Mbit Double Data Rate SDRAM, Die Rev. B

HYB25D256[400/800/160]B[T/C](L)
256-Mbit Double Data Rate SDRAM, Die Rev. B
Data Sheet Jan. 2003, V1.1
TABLE OF CONTENT
Features
Description
Pin Configuration TSOP
Pin Configuration BGA
Input/Output Functional Description
Ordering Information
Block Diagram (32Mb x 4)
Block Diagram (16Mb x 8)
Block Diagram (8Mb x 16)
Write to Write
34
Random Write Cycles
35
1
Write to Read
36
Write to Read Interrupting
37
1
Write to Read: Minimum DQSS
38
2
Write to Read: Nominal DQSS
40
3
Write to Precharge Non-Interrupting
40
4
Write to Precharge Interrupting
41
5
Write to Precharge Minimum DQSS
42
6
Write to Precharge: Nominal DQSS
43
7
Precharge
44
8
Power-Down
45
Functional Description
Initialization
Register Definition
Mode Register Operation
9 ^{Truth Table 2: Clock Enable (CKE)}
46
10 ^{Truth Table 3: Current State, SameBank)}
47
10 ^{Truth Table 4: Current State,Different Bank}
48
11 ^{Truth Table 5: Concurrent Auto Precharge}
49
Burst Definition
12
Required CAS Latencies
13 ^{Simplified State Diagram}
50
Extended Mode Register
14
Extended Mode Register Definition
15 ^{Operating Conditions}
51
Absolute Maximum Ratings
51
Commands
Delesect, No Operation
Mode Register Set
Active
Read
Write
Precharge
Auto Precharge
16 ^{Input and Output Capacitances}
51
16 ^{DC Electrical Operating Conditions}
52
16
Normal Strength Characterisitcs
53
16
Weak Strength Characterisitcs
55
16 ^{IDD Specifications and Conditions}
57
16 ^{AC Characteristics}
59
16
AC Output Load Circuit Diagram
59
17 ^{Electrical Characteristics & AC Timing}
60
Burst Terminate
Auto Refresh
Self Refresh
Truth Table 1a: Commands
Truth Table 1b: DM Operation
17
17 ^{Timing Diagrams}
63
17
Data Input (Write)
63
18
Data Output (Read)
63
18
Initialize and Mode Register Sets
64
Power Down Mode
65
Auto Refresh Mode
66
Operations
19
Self Refresh Mode
67
Activating a Specific Row in a Specific Bank 19
Read without Auto Precharge
68
tRCD and tRRD Definition
20
Read with Auto Precharge
69
Read Command
21
Bank Read Access
70
Read Burst
22
Write without Auto Precharge.
71
Consecutive Read Bursts
23
Write with Auto Precharge
72
Non-Consecutive Read Bursts
24
Bank Write Access
73
Random Read Accesses
25
Write DM Operation
74
Terminating a Read Burst
26
Read to Write
27 ^{Package Dimensions}
75
Read to Precharge
29 ^{Table of Content}
76
Write Command
30 ^{Security Information}
77
Write Burst (Burst Length = 4)
32
Write to Write (Burst Length = 4)
33
2003-01-09, V1.1
Page 76 of 77