TM124MBK36B, TM124MBK36R 1048576 BY 36-BIT

TM248NBK36B, TM248NBK36R 2097152 BY 36-BIT

DYNAMIC RAM MODULE

SMMS137E – JANUARY 1991 – REVISEDJUNE 1995

2

POST OFFICE BOX 1443

TM248NBK36B (continued)

The TM124NBK36B is available in the double-sided BK leadless module for use with sockets.

The TM124NBK36B features RAS access times of 60 ns, 70 ns, and 80 ns. This device is rated for operation

from 0

°C to 70°C

operation

TM124MBK36B

The TM124MBK36B operates as eight TMS44400DJs and one TMS44460DJ connected as shown in the

functional block diagram and Table 1. The parity bits are provided by the TMS44460DJ and are controlled by

RAS2. To ensure proper parity bit operation all memory accesses should include a RAS2 pulse. Refer to the

TMS44400 and TMS44460 data sheets for details of operation. The common I/O feature dictates the use of

early write cycles to prevent contention on D and Q.

TM248NBK36B

The TM248NBK36B operates as sixteen TMS44400DJs and two TMS44460DJs connected as shown in the

functional block diagram and Table 1. The parity bits are provided by the TMS44460DJ and are controlled by

RAS2 on side 1 and RAS3 on side 2. To ensure proper parity bit operation, all memory accesses should include

a RAS2 or RAS3 pulse. Refer to the TMS44400 and TMS44460 data sheets for details of operation. The

common I/O feature dictates the use of early write cycles to prevent contention on D and Q.