EDE5104AGSE, EDE5108AGSE
Pin Function
CK, /CK (input pins)
CK and /CK are differential clock inputs. All address and control input signals are sampled on the crossing of the
positive edge of CK and negative edge of /CK. Output (read) data is referenced to the crossings of CK and /CK
(both directions of crossing).
/CS (input pin)
All commands are masked when /CS is registered high. /CS provides for external rank selection on systems with
multiple ranks. /CS is considered part of the command code.
/RAS, /CAS, /WE (input pins)
/RAS, /CAS and /WE (along with /CS) define the command being entered.
A0 to A13 (input pins)
Provided the row address for Active commands and the column address and Auto Precharge bit for Read/Write
commands to select one location out of the memory array in the respective bank. The address inputs also provide
the op-code during mode register set commands.
[Address Pins Table]
Address (A0 to A13)
Note
Part number
Row address
AX0 to AX13
AX0 to AX13
Column address
AY0 to AY9, AY11
AY0 to AY9
EDE5104AGSE
EDE5108AGSE
A10 (AP) (input pin)
A10 is sampled during a precharge command to determine whether the precharge applies to one bank (A10 = low)
or all banks (A10 = high). If only one bank is to be precharged, the bank is selected by BA0, BA1.
BA0, BA1 (input pins)
BA0 and BA1 define to which bank an active, read, write or precharge command is being applied. BA0 also
determines if the mode register or extended mode register is to be accessed during a MRS or EMRS cycle.
[Bank Select Signal Table]
BA0
L
BA1
L
Bank 0
Bank 1
H
L
Bank 2
L
H
Bank 3
H
H
Remark: H: VIH. L: VIL.
CKE (input pin)
CKE high activates, and CKE low deactivates, internal clock signals and device input buffers and output drivers.
Taking CKE low provides precharge power-down and Self Refresh operation (all banks idle), or active power-down
(row active in any bank). CKE is synchronous for power down entry and exit, and for self refresh entry. CKE is
asynchronous for self refresh exit. CKE must be maintained high throughout read and write accesses. Input buffers,
excluding CK, /CK and CKE are disabled during power-down. Input buffers, excluding CKE, are disabled during self-
refresh.
Preliminary Data Sheet E0715E20 (Ver. 2.0)
16
ELPIDA [ ELPIDA MEMORY ]
