TM124GU8A-60 [TI]
1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE;
| 型号： | TM124GU8A-60 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE 动态存储器 内存集成电路 |
| 文件： | 总9页 (文件大小：86K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TM124GU8A
1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE
SMMS181A–JANUARY 1991–REVISED JANUARY 1993
• Organization . . . 1 048 576 × 8
• Single 5-V Power Supply (±10% Tolerance)
SINGLE IN-LINE
MODULE
(TOP VIEW)
• 30-Pin Single In-Line Memory Module
(SIMM)
• TM124GU8A Utilizes Two 4-Megabit
Dynamic RAMs in Plastic Small-Outline
J-Lead Packages (SOJs)
V
CC
1
CAS
DQ1
A0
2
3
4
5
6
7
8
9
• Long Refresh Period
A1
. . . 16 ms (1024 Cycles)
DQ2
A2
• All Inputs, Outputs, Clocks Fully TTL
Compatible
A3
V
SS
• 3-State Outputs
DQ3 10
A4 11
• Performance Ranges:
A5 12
ACCESS
TIME
ACCESS
TIME
READ
OR
DQ4 13
A6 14
(t
RAC
)
(t
AA
)
WRITE
CYCLE
(MIN)
A7 15
DQ5 16
A8 17
A9 18
NC 19
DQ6 20
(MAX)
60 ns
70 ns
80 ns
(MAX)
30 ns
35 ns
40 ns
TM124GU8A-60
TM124GU8A-70
TM124GU8A-80
110 ns
130 ns
150 ns
W
21
22
V
SS
DQ7 23
NC 24
DQ8 25
NC 26
RAS 27
NC 28
• Low Power Dissipation
• Operating Free-Air Temperature Range
0°C to 70°C
description
NC 29
V
CC
30
The TM124GU8A is a dynamic random-access
memory module organized as 1 048 576 × 8 in a
30-pin leadless single in-line memory module
(SIMM).
PIN NOMENCLATURE
The TM124GU8A is composed of two TMS44400,
1 048 576 × 4 bit dynamic RAMs in 20/26-lead
plastic small-outline J-lead packages (SOJs).
A0–A9
CAS
Address Inputs
Column-Address Strobe
DQ1–DQ8
NC
Data In/Data Out
No Internal Connect
Row-Address Strobe
5-V Supply
The TM124GU8A is mounted on a substrate with
decoupling capacitors. The onboard capacitors
eliminate the need for bypassing on the
motherboard and offer superior performance over
equivalent leaded capacitors due to reduced lead
inductance. With the elimination of bypass
capacitors on the motherboard, reduced PC
board size, and fewer plated through-holes, a cost
savings can be realized.
RAS
V
CC
V
SS
Ground
The TM124GU8A features RAS access times of 60 ns, 70 ns, and 80 ns. All inputs and outputs, including clocks,
are compatible with Series 74 TTL. All address lines and data in are latched on-chip to simplify system design.
Data out is unlatched to allow greater system flexibility.
The TM124GU8A is characterized for operation from 0°C to 70°C.
Copyright 1993, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
TM124GU8A
1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE
SMMS181A–JANUARY 1991–REVISED JANUARY 1993
operation
The TM124GU8A operates as two TMS44400s connected as shown in the functional block diagram. The
common I/O features of the TM124GU8A dictates the use of early write cycles to prevent contention on the DQ
lines.
specifications
Refresh period is extended to 16 milliseconds and, during this period, each of the 1024 rows must be strobed
with RAS in order to retain data. CAS can remain high during the refresh sequence to conserve power.
single in-line memory module and components
PC substrate: 1,27 mm (0.05 inch) nominal thickness on contact area
Bypass capacitors: Multilayer ceramic
Contact area for socketable devices: Nickel plate and solder plate over copper
2
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
TM124GU8A
1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE
SMMS181A–JANUARY 1991–REVISED JANUARY 1993
functional block diagram
1024K × 4
A0–A9
RAS
CAS
W
A0–A9
10
DQ1
DQ2
DQ3
DQ4
DQ1
DQ2
DQ3
DQ4
RAS
CAS
W
OE
V
DD
V
SS
1024K × 4
A0–A9
RAS
CAS
W
10
DQ5
DQ6
DQ7
DQ8
DQ5
DQ6
DQ7
DQ8
OE
V
DD
V
SS
V
CC
C...C
V
SS
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range on any pin (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 1 V to 7 V
Voltage range on V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 1 V to 7 V
CC
Short circuit output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 W
Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. This is a stress rating only, and
functional operation of the device at these or any other conditions beyond those indicated in the “recommended operating conditions” section of
this specification is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to V
.
SS
3
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
TM124GU8A
1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE
SMMS181A–JANUARY 1991–REVISED JANUARY 1993
recommended operating conditions
MIN NOM MAX
UNIT
V
V
V
V
Supply voltage
4.5
2.4
– 1
0
5
5.5
6.5
0.8
70
CC
IH
IL
High-level input voltage
V
Low-level input voltage (see Note 2)
Operating free-air temperature
V
T
A
°C
NOTE 2: The algebraic convention, where the more negative (less positive) limit is designated as minimum, is used in this data sheet for logic
voltage levels only.
electrical characteristics over full ranges of recommended operating conditions (unless otherwise
noted)
TM124GU8A-60 TM124GU8A-70 TM124GU8A-80
PARAMETER
TEST CONDITIONS
UINT
MIN
MAX
MIN
MAX
MIN
MAX
V
V
High-level output voltage
Low-level output voltage
I
I
= – 5 mA
2.4
2.4
2.4
V
V
OH
OH
= 4.2 mA
0.4
0.4
0.4
OL
OL
V = 0 to 6.5 V, V
= 5.5 V,
All other pins = 0 V to V
I
CC
I
I
I
Input current (leakage)
Output current (leakage)
±10
±10
±10
µA
µA
I
CC
V
V
= 0 to V
,
O
CC
= 5.5 V, CAS high
±10
±10
±10
O
CC
Read or write cycle current
(see Note 3)
Minimum cycle, V
CC
= 5.5 V
210
180
160
mA
CC1
After 1 memory cycle,
RAS and CAS high,
4
2
4
2
4
2
mA
mA
V
IH
= 2.4 V (TTL)
I
Standby Current
CC2
After 1 memory cycle,
RAS and CAS high,
V
IH
= V
– 0.2 V (CMOS)
CC
Average refresh current
(see Note 3)
Minimum cycle, V = 5.5 V,
CC
RAS cycling, CAS high
I
I
210
180
180
160
160
140
mA
mA
CC3
t
= minimum, V
= 5.5 V,
CC
Average page current
(see Note 4)
c(P)
RAS low, CAS cycling
CC4
NOTES: 3. Measured with a maximum of one address change while RAS = V
.
IL
4. Measured with a maximum of one address change while CAS = V
.
IH
4
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
TM124GU8A
1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE
SMMS181A–JANUARY 1991–REVISED JANUARY 1993
capacitance over recommended ranges of supply voltage and operating free-air temperature,
f = 1 MHz
PARAMETER
Input capacitance, address inputs
MIN
MAX
10
7
UNIT
pF
C
C
C
C
i(A)
Input capacitance, data inputs/outputs
Input capacitance, strobe inputs
Input capacitance, W input
pF
i(DQ)
i(RC)
i(W)
14
14
pF
pF
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature
TM124GU8A-60 TM124GU8A-70 TM124GU8A-80
PARAMETER
UNIT
MIN
MAX
30
MIN
MAX
35
MIN
MAX
40
t
t
t
t
t
t
Access time from column-address
Access time from CAS low
ns
ns
ns
ns
ns
ns
AA
15
18
20
CAC
CPA
RAC
CLZ
OFF
Access time from column precharge
Access time from RAS low
35
40
45
60
70
80
CAS to output in low Z
0
0
0
0
0
0
Output disable time after CAS high (see Note 5)
15
18
20
NOTE 5:
t
is specified when the otuput is no longer driven.
OFF
5
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
TM124GU8A
1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE
SMMS181A–JANUARY 1991–REVISED JANUARY 1993
timing requirements over recommended ranges of supply voltage and operating free-air
temperature
TM124GU8A-60
TM124GU8A-70
TM124GU8A-80
UNIT
MIN
110
40
60
60
15
10
40
15
0
MAX
MIN
130
45
70
70
18
10
50
15
0
MAX
MIN
150
50
80
80
20
10
60
15
0
MAX
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Random read or write cycle (see Note 6)
Page-mode read or write cycle time (see Note 7)
Page-mode pulse duration, RAS low
Non-page-mode pulse duration, RAS low
Pulse duration, CAS low
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
RC
PC
100 000
10 000
10 000
100 000
10 000
10 000
100 000
10 000
10 000
RASP
RAS
CAS
CP
Pulse duration, CAS high
Pulse duration, RAS high (precharge)
Write pulse duration
RP
WP
Column-address setup time before CAS low
Row-address setup time before RAS low
Data setup time
ASC
ASR
DS
0
0
0
0
0
0
Read setup time before CAS low
0
0
0
RCS
CWL
RWL
WCS
WSR
WTS
CAH
DHR
DH
W low setup time before CAS high
W low setup time before RAS high
W low setup time before CAS low
W high setup time (CAS-before-RAS refresh only)
W low setup time (test mode only)
Column-address hold time after CAS low
Data hold time after RAS low (see Note 8)
Data hold time
15
15
0
18
18
0
20
20
0
10
10
10
50
10
50
10
0
10
10
15
55
15
55
10
0
10
10
15
60
15
60
10
0
Column-address hold time after RAS low (see Note 8)
Row-address hold time after RAS low
Read hold time after CAS high (see Note 9)
Read hold time after RAS high (see Note 9)
Write hold time after CAS low
AR
RAH
RCH
RRH
WCH
WCR
WHR
WTH
0
0
0
15
50
10
10
15
55
10
10
15
60
10
10
Write hold time after RAS low (see Note 8)
W high hold time (CAS-before-RAS refresh only)
W low hold time (test mode only)
Continued next page.
NOTES: 6. All cycle times assume t = 5 ns.
T
7. To assure t
min, t
should be greater than or equal to 5 ns.
PC
8. The minimum value is measured when t
ASC
is set to t
RCD
min as a reference.
RCD
must be satisfied for a read cycle.
9. Either t
or t
RCH
RRH
6
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
TM124GU8A
1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE
SMMS181A–JANUARY 1991–REVISED JANUARY 1993
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (concluded)
TM124GU8A-60
TM124GU8A-70
TM124GU8A-80
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
Delay time, RAS low to CAS high
(CAS-before-RAS refresh only)
t
15
15
20
ns
CHR
t
t
Delay time, CAS high to RAS low
Delay time, RAS low to CAS high
0
0
0
ns
ns
CRP
60
70
80
CSH
Delay time, CAS low to RAS low
(CAS-before-RAS refresh only)
t
10
10
10
ns
CSR
t
t
t
t
t
t
t
t
t
t
t
Delay time, RAS low to column-address (see Note 10)
Delay time, column-address to RAS high
Delay time, column-address to CAS high
Delay time, RAS low to CAS low (see Note 10)
Delay time, RAS high to CAS low (CBR only)
Delay time, CAS low to RAS high
15
30
30
20
0
30
45
15
35
35
20
0
35
52
15
40
40
20
0
40
60
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
RAD
RAL
CAL
RCD
RPC
RSH
TAA
TCPA
TRAC
REF
T
15
35
40
65
18
40
45
75
20
45
50
85
Access time from address (test mode)
Access time from column precharge (test mode)
Access time from RAS (test mode)
Refresh time interval
16
50
16
50
16
50
Transition time
2
2
2
NOTE 10: The maximum value is specified only to assure access time.
7
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
TM124GU8A
1 048 576-WORD BY 8-BIT DYNAMIC RANDOM-ACCESS MEMORY MODULE
SMMS181A–JANUARY 1991–REVISED JANUARY 1993
30-pin U-A single in-line memory module
5,28 (0.208) MAX
89,03 (3.505)
88,77 (3.495)
3,18 (0.125)
TYP
16,64
(0.655)
MAX
10,16
(0.400)
TYP
Pin Spacing 2,54 (0.100) T.P.
(see Note A)
1, 37 (0.054)
1, 19 (0.047)
1,78 (0.070) TYP
3,38 (0.133) TYP
ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES
NOTE A: Each pin centerline is located within 0,25 (0.010) of its true longitudinal position.
device symbolization
TM124GU8A
– SS
YYMMT
YY = Year Code
MM = Month Code
T
= Assembly Site Code
–SS = Speed
NOTE: The location of the part number may vary.
Printed in U. S. A.
SMMS181A
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1998, Texas Instruments Incorporated
相关型号：
©2020 ICPDF网 联系我们和版权申明