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EM637327 PDF预览

EM637327

更新时间: 2024-01-07 22:08:35
品牌 Logo 应用领域
钰创 - ETRON /
页数 文件大小 规格书
78页 1161K
描述
1Mega x 32 SGRAM

EM637327 数据手册

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EtronTech  
EM637327  
1Mega x 32 SGRAM  
Preliminary (08/99)  
Features  
Pin Assignment (Top View)  
Fast access time from clock: 4.5/5.5/5.5/6 ns  
Fast clock rate: 200/166/143/125 MHz  
Fully synchronous operation  
Internal pipelined architecture  
Dual internal banks (512K x 32bit x 2bank)  
Programmable Mode  
·
·
·
·
·
·
1
80  
79  
78  
77  
76  
75  
74  
73  
72  
71  
70  
69  
68  
67  
66  
65  
64  
63  
62  
61  
60  
59  
58  
57  
56  
55  
54  
53  
52  
51  
DQ3  
VDDQ  
DQ4  
DQ5  
SSQ  
DQ6  
DQ7  
DQ28  
VDDQ  
DQ27  
DQ26  
2
3
4
5
6
7
8
V
V
SSQ  
DQ25  
DQ24  
VDDQ  
DQ15  
DQ14  
VSSQ  
DQ13  
DQ12  
VDDQ  
VSS  
VDDQ  
DQ16  
DQ17  
VSSQ  
DQ18  
DQ19  
VDDQ  
VDD  
9
- CAS# Latency: 1, 2, or 3  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
- Burst Length: 1, 2, 4, 8, or full page  
- Burst Type: interleaved or linear burst  
- Burst-Read-Single-Write  
- Load Color or Mask register  
Burst stop function  
Individual byte controlled by DQM0-3  
Block write and write-per-bit capability  
Auto Refresh and Self Refresh  
2048 refresh cycles/32ms  
V
SS  
V
DD  
DQ20  
DQ21  
VSSQ  
DQ22  
DQ23  
VDDQ  
DQM0  
DQM2  
WE#  
DQ11  
DQ10  
VSSQ  
DQ9  
DQ8  
VDDQ  
NC  
DQM3  
DQM1  
CLK  
CKE  
DSF  
·
·
·
·
·
·
·
·
CAS#  
RAS#  
CS0#  
BS  
NC  
A8 (AP)  
A9  
Single +3.3V ± 0.3V power supply  
Interface: LVTTL  
JEDEC 100-pin Plastic package  
- QFP (body thickness=2.8mm)  
- TQFP1.4 (body thickness=1.4mm)  
Overview  
The EM637327 SGRAM is a high-speed CMOS  
synchronous graphics DRAM containing 32 Mbits. It is  
internally configured as a dual 512K x 32 DRAM with a  
synchronous interface (all signals are registered on the  
positive edge of the clock signal, CLK). Each of the  
512K x 32 bit banks is organized as 2048 rows by 256  
columns by 32 bits. Read and write accesses to the  
SGRAM 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.  
Key Specifications  
EM637327  
- 5/6/7/8  
5/6/7/8 ns  
Clock Cycle time(min.)  
tCK3  
25/30/35/40 ns  
4.5/5.5/5.5/6 ns  
55/60/63/72 ns  
Row Active time(max.)  
tRAS  
tAC3  
tRC  
Access time from CLK(max.)  
Row Cycle time(min.)  
The EM637327 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.  
Ordering Information  
Part Number  
EM637327Q-5  
EM637327TQ-5  
EM637327Q-6  
EM637327TQ-6  
EM637327Q-7  
EM637327TQ-7  
EM637327Q-8  
EM637327TQ-8  
Frequency  
200 MHz  
200 MHz  
166 MHz  
166 MHz  
143 MHz  
143 MHz  
125 MHz  
125 MHz  
Package  
QFP  
TQFP1.4  
QFP  
TQFP1.4  
QFP  
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.  
TQFP1.4  
QFP  
TQFP1.4  
Etron Technology, Inc.  
No. 6, Technology Rd. V, Science-Based Industrial Park, Hsinchu, Taiwan 30077, R.O.C  
TEL: (886)-3-5782345 FAX: (886)-3-5778671  
Etron Technology, Inc., reserves the right to make changes to its products and specifications without notice.  

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