mt48h16m16lfbf-75 Micron Semiconductor Products, mt48h16m16lfbf-75 Datasheet - Page 63

• Manufacturer Part Number: mt48h16m16lfbf-75
• Description: 256mb X16, X32 Mobile Sdram
• Manufacturer: Micron Semiconductor Products

Figure 43: Alternating Bank Read Accesses
PDF:09005aef8219eeeb/Source: 09005aef8219eedd
256mb_x16_sdram_y36m_1.fm - Rev G 2/08 EN
COMMAND
BA0, BA1
ADDR
DQM
CLK
CKE
A10
DQ
t CMS
t CKS
t AS
t AS
t AS
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, CL = 2.
ENABLE AUTO PRECHARGE
t CMS
t CL
COLUMN m
BANK 0
T2
READ
t CMH
t CH
CL - bank 0
T3
NOP
t LZ
t AC
63
BANK 3
ACTIVE
T4
ROW
ROW
D
OUT
t OH
t AC
m
t RCD - bank 4
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D
T5
OUT
NOP
m + 1
t OH
t AC
256Mb: x16, x32 Mobile SDRAM
ENABLE AUTO PRECHARGE
COLUMN b 2
BANK 3
D
T6
OUT
READ
m + 2
t OH
t AC
CL - bank 4
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t RP - bank 0
D
T7
OUT
NOP
Timing Diagrams
m + 3
t OH
t AC
BANK 0
T8
ACTIVE
ROW
ROW
DON’T CARE
UNDEFINED
D
OUT
t RCD - bank 0
t OH
t AC
b