mt48lc2m32b2 Micron Semiconductor Products, mt48lc2m32b2 Datasheet - Page 63

• Manufacturer Part Number: mt48lc2m32b2
• Description: Synchronous Dram
• Manufacturer: Micron Semiconductor Products

Figure 45:
PDF: 09005aef811ce1fe/Source: 09005aef811ce1d5
64MSDRAMx32_2.fm - Rev. J 12/08 EN
COMMAND
BA0, BA1
DQM 0-3
A0-A9
CKE
CLK
A10
DQ
t CKS
t CMS
t AS
t AS
t AS
WRITE – Without Auto Precharge
ACTIVE
T0
ROW
ROW
BANK
t CKH
t CMH
t AH
t AH
t AH
Notes:
t RCD
t RAS
t RC
t CK
T1
NOP
1. For this example, BL = 4, and the WRITE burst is followed by a “manual” PRECHARGE.
2. Faster frequencies require two clocks (when
3. A8 and A9 = “Don’t Care.”
4.
t
WR of 1 CLK available if running 100 MHz or slower. Check factory for availability.
DISABLE AUTO PRECHARGE
t CMS
t CL
t DS
COLUMN m 3
WRITE
BANK
T2
D
IN
t CMH
t CH
t DH
m
t DS
D
IN
T3
NOP
m + 1
t DH
t DS
63
D
IN
T4
NOP
m + 2
t DH
Micron Technology, Inc., reserves the right to change products or specifications without notice.
t DS
D
NOP
IN
T5
m + 3
t DH
t
WR >
t WR
SINGLE BANK
PRECHARGE
t
ALL BANKs
2
CK).
BANK
T6
©2001 Micron Technology, Inc. All rights reserved.
NOP
t RP
T7
64Mb: x32 SDRAM
Timing Diagrams
ACTIVE
ROW
ROW
BANK
T8
DON’T CARE
UNDEFINED