EtronTech
Ball Assignment (Top View)
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2
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EM636165
Pin Assignment (Top View)
V
DD
DQ0
DQ1
V
SSQ
DQ2
DQ3
V
DDQ
DQ4
DQ5
V
SSQ
DQ6
DQ7
V
DDQ
LDQM
WE#
CAS#
RAS#
CS#
A11
A10
A0
A1
A2
A3
V
DD
1
2
3
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5
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8
9
10
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50
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Vss
DQ15
DQ14
V
SSQ
DQ13
DQ12
V
DDQ
DQ11
DQ10
V
SSQ
DQ9
DQ8
V
DDQ
NC
UDQM
CLK
CKE
NC
A9
A8
A7
A6
A5
A4
Vss
A
VSS
DQ15
DQ0
VDD
B
DQ14
VSSQ
VDDQ
DQ1
C
DQ13
VDDQ
VSSQ
DQ2
D
DQ12
DQ11
DQ4
DQ3
E
DQ10
VSSQ
VDDQ
DQ5
F
DQ9
VDDQ
VSSQ
DQ6
G
DQ8
NC
NC
DQ7
H
NC
NC
NC
NC
J
NC
UDQM
LDQM
WE#
K
NC
CLK
RAS#
CAS#
L
CKE
NC
NC
CS#
M
A11
A9
NC
NC
N
A8
A7
A0
A10
P
A6
A5
A2
A1
R
VSS
A4
A3
VDD
Overview
The EM636165 SDRAM is a high-speed CMOS synchronous DRAM containing 16 Mbits. It is internally configured
as a dual 512K word x 16 DRAM with a synchronous interface (all signals are registered on the positive edge of the
clock signal, CLK). Each of the 512K x 16 bit banks is organized as 2048 rows by 256 columns by 16 bits. Read and
write accesses to the SDRAM are burst oriented; accesses start at a selected location and continue for a programmed
number of locations in a programmed sequence. Accesses begin with the registration of a BankActivate command
which is then followed by a Read or Write command.
The EM636165 provides for programmable Read or Write burst lengths of 1, 2, 4, 8, or full page, with a burst
termination option. An auto precharge function may be enabled to provide a self-timed row precharge that is initiated at
the end of the burst sequence. The refresh functions, either Auto or Self Refresh are easy to use. By having a
programmable mode register, the system can choose the most suitable modes to maximize its performance. These
devices are well suited for applications requiring high memory bandwidth and particularly well suited to high
performance PC applications
Preliminary
2
Rev. 2.7 Mar. 2006
ETRON [ ETRON TECHNOLOGY, INC. ]
