MT48V4M32LFF5-8:G Micron Technology Inc, MT48V4M32LFF5-8:G Datasheet - Page 63

• Manufacturer Part Number: MT48V4M32LFF5-8:G
• Description: IC SDRAM 128MBIT 125MHZ 90VFBGA
• Manufacturer: Micron Technology Inc

Specifications of MT48V4M32LFF5-8:G

• Format - Memory: RAM
• Memory Type: Mobile SDRAM
• Memory Size: 128M (4Mx32)
• Speed: 125MHz
• Interface: Parallel
• Voltage - Supply: 2.3 V ~ 2.7 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 90-VFBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 42:
PDF: 09005aef807f4885/Source: 09005aef8071a76b
128Mbx16x32Mobile_2.fm - Rev. M 1/09 EN
DQMU, DQML
COMMAND
A0–A9, A11
Self Refresh Mode
BA0, BA1
Notes:
CKE
A10
CLK
DQ
High-Z
Precharge all
t CKS
active banks
t CMS
SINGLE BANK
t
PRECHARGE
ALL BANKS
AS
BANK(S)
1. No maximum time limit for self refresh.
2.
3. As a general rule, any time self refresh is exited, the DRAM may not reenter the self refresh
4. Self refresh is not supported on automotive temperature (AT) devices.
T0
t CKH
3b.
t CMH
t
3a. The DRAM has been in the self refresh mode for a minimum of 64ms prior to exiting.
AH
3c. At least two AUTO REFRESH commands are performed during each 15.625µs interval
t CK
t
mode until all rows have been refreshed via the AUTO REFRESH command at the distrib-
uted refresh rate, (
allowed. Self refresh mode may be reentered any time after exiting if the following condi-
tions are all met:
XSR requires a minimum of 2 clocks regardless of frequency or timing.
t
while the DRAM remains out of the self refresh mode. See Table 17 on page 53.
XSR has not been violated.
t RP
T1
NOP
t CH
Enter self refresh mode
t CKS
t CL
REFRESH
t
REF/number of rows), or faster. However, the following exception is
AUTO
T2
> t RAS
CLK stable prior to exiting
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self refresh mode
(Restart refresh time base)
Micron Technology, Inc., reserves the right to change products or specifications without notice.
Exit self refresh mode
t
RAS (MAX) only applies to non-self refresh mode.
Tn + 1
NOP
t XSR
128Mb: x16, x32 Mobile SDRAM
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To + 1
©2001 Micron Technology, Inc. All rights reserved.
To + 2
REFRESH
AUTO
Timing Diagrams
DON’T CARE