TM124MBK36F, TM124MBK36U 1048576 BY 36-BIT DRAM MODULE

TM248NBK36F, TM248NBK36U 2097152 BY 36-BIT DRAM MODULE

SMMS650A – APRIL 1995 – REVISED JUNE 1995

1

POST OFFICE BOX 1443

TM124MBK36F ...1048 576

× 36

TM248NBK36F ...2097 152

× 36

(SIMM) for Use With Socket

and One 4-Megabit DRAMs in Plastic

Small-Outline J-Lead (SOJ) Packages

and Two 4-Megabit DRAMs in Plastic

Small-Outline J-Lead (SOJ) Packages

(1024 Cycles)

Compatible

Data-In and Data-Out Lines in Four Blocks

CAS-Before-RAS ( CBR ), RAS-Only, and

Hidden Refresh

ACCESS

ACCESS ACCESS READ

TIME

TIME

TIME

OR

tRAC

tAA

tCAC

WRITE

CYCLE

(MAX)

(MAX)

(MAX)

(MIN)

’124MBK36F-60 60 ns

30 ns

15 ns

110 ns

’124MBK36F-70 70 ns

35 ns

18 ns

130 ns

’124MBK36F-80 80 ns

40 ns

20 ns

150 ns

’248NBK36F-60

60 ns

30 ns

15 ns

110 ns

’248NBK36F-70

70 ns

35 ns

18 ns

130 ns

’248NBK36F-80

80 ns

40 ns

20 ns

150 ns

0

°C to 70°C

– TM124MBK36F

– TM248NBK36F

Available:

– TM124MBK36U

– TM248NBK36U

description

TM124MBK36F

The TM124MBK36F is a 4-MByte dynamic random-access memory (DRAM) organized as four times

1 048 576

× 9 in a 72-pin single-in-line memory module (SIMM). The SIMM is composed of two TMS418160DZ,

1 048 576

× 16-bit dynamic RAMs, each in a 42-lead plastic small-outline J-lead (SOJ) package and one

TMS44460DJ, 1 048 576

× 4-bit DRAM in a 24/26-lead plastic small-outline J-lead (SOJ) package mounted on

a substrate with decoupling capacitors. The TMS418160DZ and TMS44460DJ are described in the

TMS418160 and TMS44460 data sheets, respectively. The TM124MBK36F SIMM is available in the

single-sided BK leadless module for use with sockets.

TM248NBK36F

The TM248NBK36F is an 8-MByte DRAM organized as four times 2 097 152

× 9 in a 72-pin single-in-line

memory module (SIMM). The SIMM is composed of four TMS418160DZ, 1 048 576

× 16-bit dynamic RAMs,

each in a 42-lead plastic small-outline J-lead ( SOJ ) package and two TMS44460DJ, 1 048 576

× 4-bit DRAMs,

each in a 24 / 26-lead plastic small-outline (SOJ) package mounted on a substrate with decoupling capacitors.

The TMS418160DZ and TMS44460DJ are described in the TMS418160 and TMS44460 data sheets,

respectively. The TM248NBK36F SIMM is available in the double-sided BK leadless module for use with

sockets.

operation

The TM124MBK36F operates as two TMS418160DZs and one TMS44460DJ connected as shown in the

functional block diagram and NO TAG. The TM248NBK36F operates as four TMS418160DZs and two

TMS44460DJs connected as shown in the functional block diagram and NO TAG. The common I / O feature

dictates the use of early write cycles to prevent contention on D and Q.

† Part numbers in this data sheet are for the gold-tabbed version; the information applies to both gold-tabbed and solder-tabbed versions.

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.

Copyright

© 1995, Texas Instruments Incorporated