A43P26161 AMIC Technology, Corp., A43P26161 Datasheet - Page 15

• Manufacturer Part Number: A43P26161
• Description: 1M x 16-Bit x 4 Banks Low Power Synchronous DRAM
• Manufacturer: AMIC Technology, Corp.

Basic feature And Function Descriptions
1. CLOCK Suspend
2. DQM Operation
PRELIMINARY
DQ(CL2)
DQ(CL3)
CMD
DQM
DQ(CL2)
CLK
DQ(CL3)
CMD
CKE
CLK
DQM
* Note :
Note: CLK to CLK disable/enable=1 clock
DQ(CL2)
DQ(CL3)
Internal
CMD
CLK
CKE
CLK
1) Write Mask (BL=4)
RD
1) Click Suspended During Write (BL=4)
2) Read Mask (BL=4)
WR
D0
D0
1. DQM makes data out Hi-Z after 2 clocks which should masked by CKE “L”.
2. DQM masks both data-in and data-out.
WR
(July, 2005, Version 1.1)
D0
D0
DQM to Data-in Mask = 0CLK
D1
D1
D1
D1
Q0
Masked by CKE
Not Written
D3
D3
Masked by CKE
D2
D2
Hi-Z
Hi-Z
D3
D3
Q1
Q2
2) Read Mask (BL=4)
2) Clock Suspended During Read (BL=4)
RD
14
Hi-Z
Hi-Z
RD
Q4
Q3
Q0
Q0
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Masked by CKE
Q0
Q1
Q1
Q2
DQM to Data-out Mask = 2
Q6
Q5
Masked by CKE
AMIC Technology, Corp.
Q2
Q3
Q2
Q1
Suspended Dout
Q7
Q6
Q3
Q3
Q2
Q8
Q7
A43P26161
Q3