EM68C08CWAE-18H Datasheet, PDF (1/63 Pages) Etron Technology, Inc. – 128M x 8 bit DDRII Synchronous DRAM (SDRAM)

EtronTech
EM68C08CWAE
128M x 8 bit DDRII Synchronous DRAM (SDRAM)
Advance (Rev. 1.3, Oct. /2015)
Features
• ^{JEDEC Standard Compliant}
• ^{JEDEC standard 1.8V I/O (SSTL_18-compatible)}
• ^{Power supplies: V}DD ^{& V}DDQ ^{= +1.8V ± 0.1V}
• ^{Operating temperature: T}C ^{= 0~85} °C
• ^{Supports JEDEC clock jitter specification}
• ^{Fully synchronous operation}
• ^{Fast clock rate: 333/400/533 MHz}
• ^{Differential Clock, CK & CK#}
• ^{Bidirectional single/differential data strobe}
• ^{8 internal banks for concurrent operation}
• ^{4-bit prefetch architecture}
• ^{Internal pipeline architecture}
• ^{Precharge & active power down}
• ^{Programmable Mode & Extended Mode registers}
• ^{Posted CAS# additive latency (AL): 0, 1, 2, 3, 4, 5}
• ^{WRITE latency = READ latency - 1 t}CK
• ^{Burst lengths: 4 or 8}
• ^{Burst type: Sequential / Interleave}
• ^{DLL enable/disable}
• ^{Off-Chip Driver (OCD)}
- Impedance Adjustment
- Adjustable data-output drive strength
• ^{On-die termination (ODT)}
• ^{RoHS compliant}
• ^{Auto Refresh and Self Refresh}
• ^{8192 refresh cycles / 64ms}
• ^{60-ball 8 x 10 x 1.2mm (max) FBGA package}
- Pb and Halogen Free
Overview
The EM68C08C is a high-speed CMOS Double-
Data-Rate-Two (DDR2), synchronous dynamic random
- access memory (SDRAM) containing 1024 Mbits in
an 8-bit wide data I/Os. It is internally configured as an
8-bank DRAM, 8 banks x 16Mb addresses x 8 I/Os.
The device is designed to comply with DDR2 DRAM
key features such as posted CAS# with additive latency,
Write latency = Read latency -1, Off-Chip Driver (OCD)
impedance adjustment and On Die Termination(ODT).
All of the control and address inputs are synchronized
with a pair of externally supplied differential clocks.
Inputs are latched at the cross point of differential clocks
(CK rising and CK# falling). All I/Os are synchronized
with a pair of bidirectional strobes (DQS and DQS#) in
a source synchronous fashion. The address bus is used
to convey row, column, and bank address information
in RAS #, CAS# multiplexing style. Accesses begin
with the registration of a Bank Activate command, and
then it is followed by a Read or Write command. Read
and write accesses to the DDR2 SDRAM are 4 or 8-bit
burst oriented; accesses start at a selected location
and continue for a programmed number of locations in
a programmed sequence. Operating the eight memory
banks in an interleaved fashion allows random access
operation to occur at a higher rate than is possible with
standard DRAMs. An auto precharge function may be
enabled to provide a self-timed row precharge that is
initiated at the end of the burst sequence. A sequential
and gapless data rate is possible depending on burst
length, CAS latency, and speed grade of the device.
Table 1. Ordering Information
Part Number
Clock Frequency
EM68C08CWAE-18H
533MHz
EM68C08CWAE-25H
400MHz
EM68C08CWAE-3H
333MHz
WA: indicates 8 x 10 x 1.2mm FBGA package
E: indicates Generation Code
H: indicates Pb and Halogen Free
Data Rate
1066Mbps/pin
800Mbps/pin
667Mbps/pin
Power Supply
VDD 1.8V, VDDQ 1.8V
VDD 1.8V, VDDQ 1.8V
VDD 1.8V, VDDQ 1.8V
Package
FBGA
FBGA
FBGA
Etron Technology, Inc.
No. 6, Technology Rd. V, Hsinchu Science Park, Hsinchu, Taiwan 30078, R.O.C.
TEL: [phone] FAX: [phone]
Etron Technology, Inc. reserves the right to change products or specification without notice.