mt48lc4m32b2tg-7-it Micron Semiconductor Products, mt48lc4m32b2tg-7-it Datasheet - Page 56

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

Figure 40:
PDF: 09005aef80872800/Source: 09005aef80863355
128MbSDRAMx32_2.fm - Rev. K 9/07 EN
COMMAND
A0–A9, A11
DQM 0–3
BA0, BA1
CLK
CKE
A10
DQ
t CMS
t CKS
t AS
t AS
t AS
Alternating Bank Read Accesses
ACTIVE
BANK 0
T0
ROW
ROW
t CKH
t CMH
t AH
t AH
t AH
Notes:
t RCD - BANK 0
t RAS - BANK 0
t
t
RC - BANK 0
RRD
t CK
T1
NOP
1. For this example, BL = 4, and CL = 2.
2. A8, A9, and A11 = “Don’t Care.”
ENABLE AUTO PRECHARGE
t CMS
t CL
COLUMN m 2
BANK 0
T2
READ
t CMH
t CH
CAS Latency - BANK 0
T3
NOP
t LZ
t AC
56
BANK 4
ACTIVE
T4
ROW
ROW
D
OUT
t OH
t AC
m
t RCD - BANK 4
Micron Technology, Inc., reserves the right to change products or specifications without notice.
D
OUT
T5
NOP
m + 1
t OH
t AC
ENABLE AUTO PRECHARGE
COLUMN b 2
D
BANK 4
T6
READ
OUT
m + 2
t OH
t AC
CAS Latency - BANK 4
t RP - BANK 0
©2001 Micron Technology, Inc. All rights reserved.
D
128Mb: x32 SDRAM
T7
OUT
NOP
m + 3
t OH
Timing Diagrams
t AC
BANK 0
T8
ROW
ACTIVE
ROW
D
OUT
t RCD - BANK 0
t OH
DON’T CARE
UNDEFINED
t AC
b