EDJ1108BABG, EDJ1116BABG
Precharge
The precharge command is used to precharge or close a bank that has been activated. The precharge command is
triggered when /CS, /RAS and /WE are low and /CAS is high at the rising edge of the clock. The precharge
command can be used to precharge each bank independently or all banks simultaneously. Four address bits A10,
BA0, BA1 and BA2 are used to define which bank to precharge when the command is issued.
[Bank Selection for Precharge by Address Bits]
A10
L
BA0
L
BA1
L
BA2
L
Precharged Bank(s)
Bank 0 only
L
H
L
L
L
Bank 1 only
L
H
H
L
L
Bank 2 only
L
H
L
L
Bank 3 only
L
H
H
H
H
×
Bank 4 only
L
H
L
L
Bank 5 only
L
H
H
×
Bank 6 only
L
H
×
Bank 7 only
H
All banks 0 to 7
Remark: H: VIH, L: VIL, ×: VIH or VIL
Data Sheet E1248E40 (Ver. 4.0)
118
ELPIDA [ ELPIDA MEMORY ]
