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W9825G2JB PDF даташит

Спецификация W9825G2JB изготовлена ​​​​«Winbond» и имеет функцию, называемую «2M X 4 BANKS X 32BITS SDRAM».

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Номер произв W9825G2JB
Описание 2M X 4 BANKS X 32BITS SDRAM
Производители Winbond
логотип Winbond логотип 

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W9825G2JB
2M 4 BANKS 32BITS SDRAM
Table of Contents-
1. GENERAL DESCRIPTION............................................................................................................. 3
2. FEATURES .................................................................................................................................... 3
3. AVAILABLE PART NUMBER......................................................................................................... 3
4. BALL CONFIGURATION ............................................................................................................... 4
5. BALL DESCRIPTIONS................................................................................................................... 5
6. BLOCK DIAGRAM.......................................................................................................................... 6
7. FUNCTIONAL DESCRIPTION....................................................................................................... 7
7.1 Power Up and Initialization .................................................................................................. 7
7.2 Programming Mode Register............................................................................................... 7
7.3 Bank Activate Command ..................................................................................................... 7
7.4 Read and Write Access Modes ........................................................................................... 7
7.5 Burst Read Command ......................................................................................................... 8
7.6 Burst Write Command ......................................................................................................... 8
7.7 Read Interrupted by a Read ................................................................................................ 8
7.8 Read Interrupted by a Write ................................................................................................ 8
7.9 Write Interrupted by a Write................................................................................................. 8
7.10 Write Interrupted by a Read ................................................................................................ 8
7.11 Burst Stop Command .......................................................................................................... 9
7.12 Addressing Sequence of Sequential Mode ......................................................................... 9
7.13 Addressing Sequence of Interleave Mode .......................................................................... 9
7.14 Auto-precharge Command ................................................................................................ 10
7.15 Precharge Command ........................................................................................................ 10
7.16 Self Refresh Command ..................................................................................................... 10
7.17 Power-down Mode............................................................................................................. 11
7.18 No Operation Command.................................................................................................... 11
7.19 Deselect Command ........................................................................................................... 11
7.20 Clock Suspend Mode ........................................................................................................ 11
8. OPERATION MODE..................................................................................................................... 12
9. ELECTRICAL CHARACTERISTICS ............................................................................................ 13
9.1 Absolute Maximum Ratings............................................................................................... 13
9.2 Recommended DC Operating Conditions ......................................................................... 13
9.3 Capacitance....................................................................................................................... 13
9.4 DC Characteristics............................................................................................................. 14
9.5 AC Characteristics and Operating Condition..................................................................... 15
10. TIMING WAVEFORMS ................................................................................................................ 17
10.1 Command Input Timing ..................................................................................................... 17
10.2 Read Timing ...................................................................................................................... 18
Publication Release Date: Apr. 11, 2011
- 1 - Revision A01
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W9825G2JB
10.3 Control Timing of Input/Output Data.................................................................................. 19
10.4 Mode Register Set Cycle................................................................................................... 20
11. OPERATING TIMING EXAMPLE................................................................................................. 21
11.1 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3)........................................... 21
11.2 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3, Auto-precharge)................ 22
11.3 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3)........................................... 23
11.4 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3, Auto-precharge)................ 24
11.5 Interleaved Bank Write (Burst Length = 8) ........................................................................ 25
11.6 Interleaved Bank Write (Burst Length = 8, Auto-precharge) ............................................. 26
11.7 Page Mode Read (Burst Length = 4, CAS Latency = 3) ................................................... 27
11.8 Page Mode Read / Write (Burst Length = 8, CAS Latency = 3) ........................................ 28
11.9 Auto-precharge Read (Burst Length = 4, CAS Latency = 3) ............................................. 29
11.10 Auto-precharge Write (Burst Length = 4) .......................................................................... 30
11.11 Auto Refresh Cycle............................................................................................................ 31
11.12 Self Refresh Cycle ............................................................................................................. 32
11.13 Burst Read and Single Write (Burst Length = 4, CAS Latency = 3) .................................. 33
11.14 Auto-precharge Timing (Read Cycle) ................................................................................ 34
11.15 Auto-precharge Timing (Write Cycle) ................................................................................ 35
11.16 Timing Chart of Read to Write Cycle ................................................................................. 36
11.17 Timing Chart of Write to Read Cycle ................................................................................. 36
11.18 Timing Chart of Burst Stop Cycle (Burst Stop Command) ................................................ 37
11.19 Timing Chart of Burst Stop Cycle (Precharge Command) ................................................ 37
11.20 CKE/DQM Input Timing (Write Cycle) ............................................................................... 38
11.21 CKE/DQM Input Timing (Read Cycle) ............................................................................... 39
12. PACKAGE SPECIFICATION ....................................................................................................... 40
13. REVISION HISTORY ................................................................................................................... 41
-2-
Publication Release Date: Apr. 11, 2011
Revision A01
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W9825G2JB Даташит, Описание, Даташиты
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W9825G2JB
1. GENERAL DESCRIPTION
W9825G2JB is a high-speed synchronous dynamic random access memory (SDRAM), organized as
2,097,152 words 4 banks 32 bits. W9825G2JB delivers a data bandwidth of up to 166M words per
second. For different application, W9825G2JB is sorted into two speed grades: -6, -75. The -6/-6I is
compliant to the 166MHz/CL3 specification, (the -6I grade which is guaranteed to support -40°C ~
85°C) ,the -75/75I is compliant to the PC133/CL3 specification (the 75I grade which is guaranteed to
support -40°C ~ 85°C).
Accesses to the SDRAM are burst oriented. Consecutive memory location in one page can be
accessed at a burst length of 1, 2, 4, 8 or full page when a bank and row is selected by an ACTIVE
command. Column addresses are automatically generated by the SDRAM internal counter in burst
operation. Random column read is also possible by providing its address at each clock cycle. The
multiple bank nature enables interleaving among internal banks to hide the precharging time.
By having a programmable Mode Register, the system can change burst length, latency cycle,
interleave or sequential burst to maximize its performance. W9825G2JB is ideal for main memory in
high performance applications.
2. FEATURES
3.3V 0.3V for -6 speed grades power supply
2.7V~3.6V for -6I/-75/75I speed grades power supply
Up to 166 MHz Clock Frequency
2,097,152 Words 4 banks 32 bits organization
Self Refresh Mode: Standard and Low Power
CAS Latency: 2 and 3
Burst Length: 1, 2, 4, 8 and full page
Burst Read, Single Writes Mode
Byte Data Controlled by DQM
Auto-precharge and Controlled Precharge
4K Refresh cycles / 64 mS
Interface: LVTTL
Package: 90 Balls TFBGA, using Lead free materials with RoHS compliant
Dual-Die package
3. AVAILABLE PART NUMBER
PART NUMBER
W9825G2JB-6
W9825G2JB-6I
W9825G2JB-75
W9825G2JB75I
SPEED GRADE
166MHz/CL3
166MHz/CL3
133MHz/CL3
133MHz/CL3
SELF REFRESH
CURRENT (MAX)
4 mA
4 mA
4 mA
4 mA
OPERATING
TEMPERATURE
0°C ~ 70°C
-40°C ~ 85°C
0°C ~ 70°C
-40°C ~ 85°C
-3-
Publication Release Date: Apr. 11, 2011
Revision A01
Datasheet pdf - http://www.DataSheet4U.net/










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