mt48lc4m32b2tg-7-it Micron Semiconductor Products, mt48lc4m32b2tg-7-it Datasheet - Page 62

• Manufacturer Part Number: mt48lc4m32b2tg-7-it
• Description: 128mb X32 Sdram
• Manufacturer: Micron Semiconductor Products

Figure 46:
PDF: 09005aef80872800/Source: 09005aef80863355
128MbSDRAMx32_2.fm - Rev. K 9/07 EN
COMMAND
A0–A9, A11
BA0, BA1
DQM0–3
CLK
CKE
A10
DQ
t CMS
t CKS
t AS
t AS
t AS
ACTIVE
BANK 0
T0
ROW
ROW
Alternating Bank Write Accesses
t CKH
t CMH
t AH
t AH
t AH
t RCD - BANK 0
t RAS - BANK 0
t
t
RC - BANK 0
RRD
Notes:
t CK
T1
NOP
1. For this example, BL = 4.
2. Faster frequencies require two clocks (when
3. A8, A9, and A11 = “Don’t Care.”
ENABLE AUTO PRECHARGE
t CMS
t CL
COLUMN m 3
t DS
BANK 0
WRITE
D
T2
IN
t CMH
t CH
t DH
m
t DS
D
IN
T3
NOP
m + 1
t DH
t DS
D
BANK 1
ACTIVE
IN
ROW
T4
ROW
m + 2
t DH
62
t RCD - BANK 1
t DS
D
IN
T5
NOP
m + 3
t DH
Micron Technology, Inc., reserves the right to change products or specifications without notice.
t WR
ENABLE AUTO PRECHARGE
2
- BANK 0
t
COLUMN b 3
t DS
WR >
BANK 1
WRITE
T6
D
IN
t DH
b
t
CK).
t DS
D
NOP
T7
IN
b + 1
t DH
t RP - BANK 0
©2001 Micron Technology, Inc. All rights reserved.
128Mb: x32 SDRAM
t DS
D
Timing Diagrams
IN
NOP
T8
b + 2
t DH
t DS
D
BANK 0
ACTIVE
T9
IN
ROW
ROW
b + 3
t
t
RCD - BANK 0
WR - BANK 1
DON’T CARE
t DH