EM638165 Etron Technology Inc., EM638165 Datasheet - Page 4

• Manufacturer Part Number: EM638165
• Description: 4Mega x 16 Synchronous DRAM (SDRAM)
• Manufacturer: Etron Technology Inc.

Preliminary
DQ0-DQ15
NC/RFU
LDQM,
UDQM
WE#
V
V
V
V
DDQ
SSQ
DD
SS
Supply
Supply
Supply
Supply
Output
Input /
Input
Input
-
Write Enable: The WE# signal defines the operation commands in conjunction
with the RAS# and CAS# signals and is latched at the positive edges of CLK.
The WE# input is used to select the BankActivate or Precharge command and
Read or Write command.
Data Input/Output Mask: Controls output buffers in read mode and masks
Input data in write mode.
Data I/O: The DQ0-15 input and output data are synchronized with the positive
edges of CLK. The I/Os are maskable during Reads and Writes.
No Connect: These pins should be left unconnected.
DQ Power: Provide isolated power to DQs for improved noise immunity.
( 3.3V 0.3V )
DQ Ground: Provide isolated ground to DQs for improved noise immunity.
( 0 V )
Power Supply: +3.3V
Ground
0.3V
4
Rev 0.6
EM638165
Feb. 2001