- 您现在的位置：买卖IC网 > Sheet目录345 > MT48H32M16LFB4-75B IT:C (Micron Technology Inc)IC SDRAM 512MB 54VFBGA
512Mb: 32 Meg x 16, 16 Meg x 32 Mobile SDRAM
Initialization
Figure 12: Initialize and Load Mode Register
T0
T1
Tn + 1
To + 1
Tp + 1
Tq + 1
Tr + 1
CLK
CKE
( (
) )
( (
) )
( (
) )
( (
) )
t CK
t CKS t CKH
t CMS t CMH
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
Command1
( (
) )
( (
) )
NOP
PRE
( (
) )
( (
) )
AR
( (
) )
( (
) )
AR
( (
) )
( (
) )
LMR
( (
) )
( (
) )
LMR
( (
) )
( (
) )
Valid
( (
) )
( (
) )
DQM
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
Address
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
t AS t AH
Code
( (
) )
( (
) )
Code
( (
) )
( (
) )
Valid
( (
) )
( (
) )
A10
BA0, BA1
( (
) )
( (
) )
( (
) )
( (
) )
All bank s
t AS tAH
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
Code
t AS t AH
BA0 = L,
BA1 = L
( (
) )
( (
) )
( (
) )
( (
) )
Code
L
BA0 = L,
BA1 = H
( (
) )
( (
) )
( (
) )
( (
) )
Valid
Valid
( (
) )
( (
) )
( (
) )
( (
) )
) )
) )
) )
) )
) )
) )
DQ
( (
) )
High-Z
( (
( (
( (
( (
( (
( (
T = 100μs
t RP
t RFC 2
t RFC 2
t MRD 3
t MRD 3
Power-up:
Precharge
Load mode
Load extended
V DD and
CLK stable
all banks
register
mode register
Don’t Care
Notes:
1. PRE = PRECHARGE command, AR = AUTO REFRESH command, LMR = LOAD MODE REG-
ISTER command.
2. NOPs or DESELECTs must only be provided during t RFC time.
3. NOPs or DESELECTs must only be provided during t MRD time.
PDF: 09005aef8459c827
512mb_mobile_sdram_y67m_at.pdf – Rev. B 3/11 EN
39
Micron Technology, Inc. reserves the right to change products or specifications without notice.
? 2011 Micron Technology, Inc. All rights reserved.
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MT48H8M16LFB4-75 IT:K TR
IC SDRAM 128MBIT 133MHZ 54VFBGA
MTC100-JA2-P34
CONTACT INSERT PIN
MX841BE
IC CONVERTER WHITE LED 8-SOIC
MXHV9910BTR
IC LED DRIVER HIGH BRIGHT 8-SOIC
MXN12FB12F
MOTOR BRUSHED DC 12V 2922RPM
MXN13FB08B1
MOTOR BRUSHED DC 8V 4714RPM
N01L63W2AB25I
IC SRAM ASYNC 1MBIT ULP 48-BGA
N01L63W3AB25I
IC SRAM 1MBIT 3V LP 48-BGA
相关代理商/技术参数