K4S281632F-UC75 SAMSUNG, K4S281632F-UC75 Datasheet - Page 10

• Manufacturer Part Number: K4S281632F-UC75
• Description: SEMICONDUCTOR, U=UNLEADED
• Manufacturer: SAMSUNG

K4S281633D-RL(N)
MODE REGISTER FIELD TABLE TO PROGRAM MODES
Register Programmed with Normal MRS
Normal MRS Mode
Function
Address
Power Up Sequence
A8
A9
0
0
1
1
0
1
1. Apply power and start clock, Attempt to maintain CKE= "H", DQM= "H" and the other pins are NOP condition at the inputs.
2. Power is applied to VDD and VDDQ (simultaneously).
3. Maintain stable power, stable clock and NOP input condition for a minimum of 200us.
4. Issue precharge commands for all banks of the devices.
5. Issue 2 or more auto-refresh commands.
6. Issue a mode register set command to initialize the mode register.
Note :
Write Burst Length
A7
0
1
0
1
1. In order to assert normal MRS, BA0 and BA1 should set "0" absolutely.
Test Mode
"0" Setting for
BA0 ~ BA1
Normal MRS
Mode Register Set
Single Bit
Length
Burst
Reserved
Reserved
Reserved
Type
*1
A11 ~ A10/AP
A6
RFU
0
0
0
0
1
1
1
1
A5
CAS Latency
0
0
1
1
0
0
1
1
W.B.L
A4
A9
0
1
0
1
0
1
0
1
Reserved
Reserved
Reserved
Reserved
Reserved
Latency
A8
Test Mode
1
2
3
BA1
A7
A3
0
1
0
Mode Select
Burst Type
BA0
0
A6
Sequential
Interleave
Type
CAS Latency
mal MRS
for Nor-
Setting
Mode
A5
A2
A4
0
0
0
0
1
1
1
1
Full Page Length : 256(x16)
A1
0
0
1
1
0
0
1
1
A3
BT
Burst Length
A0
0
1
0
1
0
1
0
1
CMOS SDRAM
Rev. 0.6 Nov. 2001
A2
Reserved Reserved
Reserved Reserved
Reserved Reserved
Full Page Reserved
Burst Length
BT=0
Preliminary
1
2
4
8
A1
BT=1
A0
1
2
4
8