- 您现在的位置：买卖IC网 > PDF目录189259 > NT5CB256M4AN-BF (NANYA TECHNOLOGY CORP) DDR DRAM, PBGA78 PDF资料下载
参数资料
| 型号： | NT5CB256M4AN-BF |
| 厂商： | NANYA TECHNOLOGY CORP |
| 元件分类： | DRAM |
| 英文描述： | DDR DRAM, PBGA78 |
| 封装： | 0.80 MM PITCH, ROHS COMPLIANAT, WBGA-78 |
| 文件页数： | 32/106页 |
| 文件大小： | 2599K |
| 代理商： | NT5CB256M4AN-BF |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页当前第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页
1Gb DDR3 SDRAM A-Die
NT5CB256M4AN / NT5CB128M8AN / NT5CB64M16AP
31
REV 1.2
01 / 2009
Extended Temperature Usage
a. Auto Self-refresh supported
b. Extended Temperature Range supported
c. Double refresh required for operation in the Extended Temperature Range.
Mode Register Description
Field
Bits
Description
ASR
MR2(A6)
Auto Self-Refresh (ASR)
When enabled, DDR3 SDRAM automatically provides Self-Refresh power management
functions for all supported operating temperature values. If not enabled, the SRT bit must be
programmed to indicate TOPER during subsequent Self-Refresh operation.
0 = Manual SR Reference (SRT)
1 = ASR enable
SRT
MR2(A7)
Self-Refresh Temperature (SRT) Range
If ASR = 0, the SRT bit must be programmed to indicate TOPER during subsequent Self-Refresh
operation. If ASR = 1, SRT bit must be set to 0.
0 = Normal operating temperature range
1 = Extended operating temperature range
Auto Self-Refresh mode - ASR mode
DDR3 SDRAM provides an Auto-Refresh mode (ASR) for application ease. ASR mode is enabled by setting MR2 bit A6=1 and MR2
bit A7=0. The DRAM will manage Self-Refresh entry in either the Normal or Extended Temperature Ranges. In this mode, the DRAM
will also manage Self-Refresh power consumption when the DRAM operating temperature changes, lower at low temperatures and
higher at high temperatures. If the ASR option is not supported by DRAM, MR2 bit A6 must set to 0. If the ASR option is not enabled
(MR2 bit A6=0), the SRT bit (MR2 bit A7) must be manually programmed with the operating temperature range required during
Self-Refresh operation. Support of the ASR option does not automatically imply support of the Extended Temperature Range.
Self-Refresh Temperature Range - SRT
SRT applies to devices supporting Extended Temperature Range only. If ASR=0, the Self-Refresh Temperature (SRT) Range bit must
be programmed to guarantee proper self-refresh operation. If SRT=0, then the DRAM will set an appropriate refresh rate for
Self-Refresh operation in the Normal Temperature Range. If SRT=1, then the DRAM will set an appropriate, potentially different,
refresh rate to allow Self-Refresh operation in either the Normal or Extended Temperature Ranges. The value of the SRT bit can effect
self-refresh power consumption, please refer to IDD table for details.
Self-Refresh mode summary
MR2
A[6]
MR2
A[7]
Self-Refresh operation
Allowed Operating
Temperature Range
for Self-Refresh mode
0
Self-Refresh rate appropriate for the Normal Temperature Range
Normal (0 ~ 85C)
0
1
Self-Refresh appropriate for either the Normal or Extended Temperature Ranges.
The DRAM must support Extended Temperature Range. The value of the SRT bit
can effect self-refresh power consumption, please refer to the IDD table for details.
Normal and Extended
(0 ~ 95C)
1
0
ASR enabled (for devices supporting ASR and Normal Temperature Range).
Self-Refresh power consumption is temperature dependent.
Normal (0 ~ 85C)
1
0
ASR enabled (for devices supporting ASR and Extended Temperature Range).
Self-Refresh power consumption is temperature dependent.
Normal and Extended
(0 ~ 95C)
1
Illegal
相关PDF资料 |
PDF描述 |
|---|---|
| NT5DS64M8BF-6KI | DDR DRAM, PBGA60 |
| NT5SE8M16DS-6K | 8M X 16 SYNCHRONOUS DRAM, 5 ns, PDSO54 |
| NT5SV8M8DT-7 | 8M X 8 SYNCHRONOUS DRAM, 5.4 ns, PDSO54 |
| NTC1111-20MHZ | Analog IC |
| NTC1111-SERIES | Analog IC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NT5CB256M8FN-DI | 制造商:Nanya Technology Corporation 功能描述:MEMORY IC |
| NT5CB256M8GN-CG | 制造商:Nanya Technology Corporation 功能描述:DRAM |
| NT5CB64M16DP-CF | 制造商:Nanya Technology Corporation 功能描述:DRAM |
| NT5CB64M16FP-DH | 制造商:Nanya Technology Corporation 功能描述:MEMORY |
| NT5CB64M16FP-DII | 制造商:Nanya Technology Corporation 功能描述:MEMORY IC |
发布紧急采购，3分钟左右您将得到回复。