EDJ2104EDBG Datasheet, PDF (107/150 Pages) Elpida Memory – ZQ calibration for DQ drive and ODT

EDJ2104EDBG, EDJ2108EDBG
CK
/CK
Command*³
Address*⁴
DQS, /DQS
T0
T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14
READ NOP READ
tCCD
Bank
Col n
Bank
Col b
tRPRE
NOP
tRPST
DQ*²
RL = 5
Dout Dout Dout Dout Dout Dout Dout Dout Dout Dout Dout Dout
n n+1 n+2 n+3 n+4 n+5 n+6 n+7 b b+1 b+2 b+3
RL = 5
Notes: 1. RL = 5 (CL = 5, AL = 0).
2. Dout n (or b) = data-out from column n (or column b).
3. NOP commands are shown for ease of illustration; other commands may be valid at these times.
4. BC4 setting activated by MR0 bit [A1, A0] = [0, 1] and A12 = 0 during READ command at T4.
BL8 setting activated by MR0 bit [A1, A0] = [0, 1] and A12 = 1 during READ command at T0.
VIH or VIL
T0
CK
/CK
Read (BL8) to Read (BC4) OTF
T4 T5 T6 T7 T8 T9
T10 T11 T12 T13 T14
Command*³
Address*⁴
DQS, /DQS
READ
Bank
Col n
NOP
tCCD
READ
Bank
Col b
tRPRE
NOP
tRPST
tRPRE
tRPST
DQ*²
RL = 5
Dout Dout Dout Dout
n n+1 n+2 n+3
RL = 5
Dout Dout Dout Dout Dout Dout Dout Dout
b b+1 b+2 b+3 b+4 b+5 b+6 b+7
Notes: 1. RL = 5 (CL = 5, AL = 0).
2. Dout n (or b) = data-out from column n (or column b).
3. NOP commands are shown for ease of illustration; other commands may be valid at these times.
4. BC4 setting activated by MR0 bit [A1, A0] = [0, 1] and A12 = 0 during READ command at T0.
BL8 setting activated by MR0 bit [A1, A0] = [0, 1] and A12 = 1 during READ command at T4.
Read (BC4) Read (BL8) OTF
VIH or VIL
Data Sheet E1797E41 (Ver. 4.1)
107