IS43LR16160G Datasheet, PDF (3/45 Pages) Integrated Silicon Solution, Inc – Fully differential clock inputs

IS43/46LR16160G
Table2 : Pin Descriptions
Symbol
Type
CK, /CK
Input
CKE
Input
/CS
Input
BA0, BA1
Input
A0~A12
/RAS, /CAS, /WE
Input
Input
LDM, UDM
Input
Function
System Clock
Clock Enable
Chip Select
Bank Address
Address
Row Address Strobe,
Column Address Strobe,
Write Enable
Data Input Mask
Descriptions
The system clock input. CK and /CK are differential clock
inputs. All address and control input signals are registered on
the crossing of the rising edge of CK and falling edge of /CK.
Input and output data is referenced to the crossing of CK and
/CK.
CKE is clock enable controls input. CKE HIGH activates, and
CKE LOW deactivates internal clock signals, and device input
buffers and output drivers. CKE is synchronous for all functions
except for SELF REFRESH EXIT, which is achieved
asynchronously.
/CS enables (registered Low) and disables (registered High)
the command decoder. All commands are masked when /CS
IS REGISTERED high. /CS provides for external bank selection
on systems with multiple banks. /CS is considered part of the
command code.
BA0 and BA1 define to which bank an ACTIVE, READ, WRITE,
or PRECHARGE command is being applied. BA0 and BA1 also
determine which mode register (standard mode register or
extended mode register) is loaded during a LOAD MODE
REGISTER command.
Row Address
Column Address
Auto Precharge
: RA0~RA12
: CA0~CA8
: A10
/RAS, /CAS and /WE define the operation.
Refer function truth table for details.
DM is an input mask signal for write data. Input data
is masked when DM is sampled HIGH along with that input
data during a WRITE access. DM is sampled on both edges of
DQS. Although DM balls are input-only.
DQ0~DQ15
In/Output
Data Input/Output
Data input/output pin.
LDQS, UDQS
VDD
VSS
VDDQ
VSSQ
NC
In/Output
Supply
Supply
Supply
Supply
NC
Data Input/Output
Strobe
Power Supply
Ground
DQ Power Supply
DQ Ground
No Connection
Output with read data, input with write data. DQS is edge-
aligned with read data, centered in write data. Data strobe is
used to capture data.
Power supply
Ground
Power supply for DQ
Ground for DQ
No connection.
Rev. A | November 2013
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