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MT4LC4M16F5 Datasheet

  • MT4LC4M16F5

  • DRAM

  • 19頁

  • MICRON

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4 MEG x 16
FPM DRAM
DRAM
MT4LC4M16F5
For the latest data sheet, please refer to the Micron
Web site: www.micron.com/mti/msp/html/
datasheet.html
FEATURES
鈥?Single +3.3V 鹵0.3V power supply
鈥?Industry-standard x16 pinout, timing, functions,
and packages
鈥?12 row, 10 column addresses
鈥?High-performance CMOS silicon-gate process
鈥?All inputs, outputs and clocks are LVTTL-compatible
鈥?FAST PAGE MODE (FPM) access
鈥?4,096-cycle CAS#-BEFORE-RAS# (CBR) REFRESH
distributed across 64ms
PIN ASSIGNMENT (Top View)
50-Pin TSOP
V
CC
DQ0
DQ1
DQ2
DQ3
V
CC
DQ4
DQ5
DQ6
DQ7
NC
V
CC
WE#
RAS#
NC
NC
NC
NC
A0
A1
A2
A3
A4
A5
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
V
SS
DQ15
DQ14
DQ13
DQ12
V
SS
DQ11
DQ10
DQ9
DQ8
NC
V
SS
CASL#
CASH#
OE#
NC
NC
NC
A11
A10
A9
A8
A7
A6
V
SS
OPTIONS
鈥?Plastic Package
50-pin TSOP (400 mil)
鈥?Timing
50ns access
60ns access
鈥?Refresh Rate
Standard Refresh
Part Number Example
MARKING
TG
-5
-6
None
MT4LC4M16F5TG-5
KEY TIMING PARAMETERS
SPEED
-5
-6
t
RC
t
RAC
t
PC
t
AA
t
CAC
90ns
110ns
50ns
60ns
30ns
35ns
25ns
30ns
13ns
15ns
NOTE:
1. The # symbol indicates signal is active LOW.
GENERAL DESCRIPTION
The 4 Meg x 16 DRAM is a high-speed CMOS,
dynamic random-access memory device containing
67,108,864 bits organized in a x16 configuration. The
MT4LC4M16F5 is functionally organized as 4,194,304
locations containing 16 bits each. The 4,194,304
memory locations are arranged in 4,096 rows by 1,024
columns. During READ or WRITE cycles, each location
is uniquely addressed via the address bits: 12 row-
address bits (A0-A11) and 10 column-address bits (A0-
A9). In addition, both byte and word accesses are
supported via the two CAS# pins (CASL# and CASH#).
The CAS# functionality and timing related to address
and control functions (e.g., latching column addresses
or selecting CBR REFRESH) are such that the internal
4 Meg x 16 FPM DRAM
D28_2.p65 鈥?Rev. 5/00
CAS# signal is determined by the first external CAS#
signal (CASL# or CASH#) to transition LOW and the last
to transition back HIGH. The CAS# functionality and
timing related to driving or latching data are such that
each CAS# signal independently controls the associ-
ated eight DQ pins.
The row address is latched by the RAS# signal, then
the column address by CAS#. The device provides FAST-
PAGE-MODE operation, allowing for fast successive
data operations (READ, WRITE, or READ-MODIFY-
WRITE) within a given row.
The MT4LC4M16F5 must be refreshed periodi-
cally in order to retain stored data.
1
Micron Technology, Inc., reserves the right to change products or specifications without notice.
漏2000, Micron Technology, Inc.

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