mt48h4m16lf Micron Semiconductor Products, mt48h4m16lf Datasheet - Page 60

• Manufacturer Part Number: mt48h4m16lf
• Description: 64mb 4 Meg X 16 Mobile Sdram Features
• Manufacturer: Micron Semiconductor Products

Figure 47:
PDF: 09005aef8237ed98/Source: 09005aef8237ed68
64mb_x16_Mobile SDRAM_Y24L_2.fm - Rev. C 10/07 EN
A0–A9, A11
Command
BA0, BA1
DQM
CLK
CKE
A10
DQ
t CMS
t CKS
t AS
t AS
t AS
ACTIVE
Row
Row
Bank 0
T0
Alternating Bank Write Accesses
t CKH
t CMH
t AH
t AH
t AH
t RCD - Bank 0
t RAS - Bank 0
t
t
Notes:
RC - Bank 0
RRD
t CK
T1
NOP
1. For this example, the BL = 4.
2. A8, A9, and A11 = “Don’t Care.”
Enable auto precharge
t CMS
t CL
t DS
Column m 2
Bank 0
WRITE
T2
D
IN
t CMH
t CH
t DH
m
t DS
D
IN
T3
NOP
m + 1
t DH
t DS
D
ACTIVE
Row
Bank 1
Row
IN
T4
m + 2
t DH
60
t RCD - Bank 1
t DS
D
IN
T5
NOP
m + 3
t DH
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t WR - Bank 0
Enable auto precharge
64Mb: 4 Meg x 16 Mobile SDRAM
t DS
Column b 2
WRITE
Bank 1
T6
D
IN
t DH
b
t DS
t RP - Bank 0
D
NOP
IN
T7
b + 1
t DH
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t DS
D
Timing Diagrams
IN
NOP
T8
b + 2
t DH
t DS
D
Bank 0
Row
Row
ACTIVE
T9
IN
b + 3
t
t
RCD - Bank 0
WR - Bank 1
Don’t Care
t DH