EM639165 Datasheet, PDF (1/48 Pages) Etron Technology, Inc. – 8Mega x 16bits SDRAM

EtronTech
Features
• Single 3.3 ± 0.3V power supply
• Fast clock rate
- PC133: 133 MHz (CL3)
- PC100: 100 MHz (CL2)
• Fully synchronous operation referenced to clock
rising edge
• 4-bank operation controlled by BA0, BA1 (Bank
Address)
• Programmable Mode registers
- /CAS Latency: 2 or 3
- Burst Length: 1, 2, 4, 8 or full page
- Burst Type: interleaved or linear burst
• Byte Control – DQML and DQMU
• Random column access
• Auto precharge / All banks precharge controlled
by A10
• Auto and self-refresh
• Self-refresh mode: standard and low power
• 4096 refresh cycles/64ms
• Interface: LVTTL
• 54-pin 400 mil plastic TSOP II package
Key Specifications
EM639165
tCK2 Clock Cycle time (min., CL=2)
tCK3 Clock Cycle time (min., CL=3)
tAC2 Access time (max., CL=2)
tAC3 Access time (max., CL=3)
tRAS Row Active time (max.)
tRC Row Cycle time(min.)
- 75/8
10/10 ns
7.5/8 ns
6/6 ns
5.4/6 ns
45/48 ns
67.5/70 ns
Overview
EM639165 is a high-speed Synchronous Dynamic
Random Access Memory (SDRAM), organized as 4
banks x 2,097,152 words x 16 bits. All inputs and
outputs are referenced to the rising edge of CLK.
It achieves very high-speed data rates up to
133MHz, and is suitable for main memories or graphic
memories in computer systems. For handheld device
application, we also provide a low power option, with
self-refresh current under 800 µA.
EM639165
8Mega x 16bits SDRAM
Preliminary (Rev 1.0, 2/2001)
Pin Assignment (Top View)
VDD
1
DQ0
2
VDDQ
3
DQ1
4
DQ2
5
VSSQ
6
DQ3
7
DQ4
8
VDDQ
9
DQ5
10
DQ6
11
VSSQ
12
DQ7
13
VDD
14
DQML
15
/WE
16
/CAS
17
/RAS
18
/CS
19
BA0
20
BA1
21
A10(AP)
22
A0
23
A1
24
A2
25
A3
26
VDD
27
54
VSS
53
DQ15
52
VSSQ
51
DQ14
50
DQ13
49
VDDQ
48
DQ12
47
DQ11
46
VSSQ
45
DQ10
44
DQ9
43
VDDQ
42
DQ8
41
VSS
40
NC
39
DQMU
38
CLK
37
CKE
36
NC
35
A11
34
A9
33
A8
32
A7
31
A6
30
A5
29
A4
28
VSS
Ordering Information
Part Number
EM639165TS-75
EM639165TS-75L
EM639165TS-8
EM639165TS-8L
Speed
Grade
Self refresh
current (Max.)
PC133/CL3
2 mA
PC133/CL3
800 µA
PC100/CL2
2 mA
PC100/CL2
800 µA
Etron Technology, Inc.
No. 6, Technology Rd. V, Science-Based Industrial Park, Hsinchu, Taiwan 30077, R.O.C.
TEL: [phone] FAX: [phone]
Etron Technology, Inc., reserves the right to make changes to its products and specifications without notice.