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參數(shù)資料
| 型號(hào)： | 5962D0153301QXX |
| 元件分類： | SRAM |
| 英文描述： | 512K X 32 MULTI DEVICE SRAM MODULE, 35 ns, QMA68 |
| 封裝： | DUAL CAVITY, CERAMIC, QFP-68 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 124K |
| 代理商： | 5962D0153301QXX |
FEATURES
q 35ns maximum (3.3 volt supply) address access time
q MCM contains four (4) 512K x 8 industry-standard
asynchronous SRAMs; the control architecture allows
operation as 8, 16, 24, or 32-bit data width
q TTL compatible inputs and output levels, three-state
bidirectional data bus
q Typical radiation performance
- Total dose
- To 50krads
- SEL Immune >100 MeV-cm
2/mg
- LETTH(0.25) = 40 MeV-cm
2/mg
- Saturated Cross Section cm2 per bit, 1.0E-9
- <1E-10 errors/bit-day, Adams 90% geosynchronous
heavy ion
- Inherent Neutron Hardness: 1.0E14n/cm
2
- Dose Rate (estimated)
- Upset 1.0E8 rad(Si)/sec
- Latchup >1.0E11 rad(Si)/sec
q Packaging options:
- 68-lead dual cavity ceramic quad flatpack (CQFP)
q Standard Microcircuit Drawing pending
- QML T and Q compliant part
INTRODUCTION
The QCOTSTM UT8Q512K32 Quantified Commercial
Off-the-Shelf product is a high-performance 2M byte
(16Mbit) CMOS static RAM multi-chip module (MCM),
organized as four individual 524,288 x 8 bit SRAMs with a
common output enable. Memory expansion is provided by
an active LOW chip enable (En), an active LOW output
enable (G), and three-state drivers. This device has a power-
down feature that reduces power consumption by more than
90% when deselected.
Writing to each memory is accomplished by taking the chip
enable (En) input LOW and write enable ( Wn) inputs LOW.
Data on the I/O pins is then written into the location
specified on the address pins (A
0 through A 18 ). Reading
from the device is accomplished by taking the chip enable
(En) and output enable (G) LOW while forcing write enable
(Wn) HIGH. Under these conditions, the contents of the
memory location specified by the address pins will appear
on the I/O pins.
The input/output pins are placed in a high impedance state
when the device is deselected (En HIGH), the outputs are
disabled (G HIGH), or during a write operation (En LOW
and Wn LOW). Perform 8, 16, 24 or 32 bit accesses by
making Wn along with En a common input to any
combination of the discrete memory die.
Figure 1. UT8Q512K32 SRAM Block Diagram
512K x 8
DQ(31:24)
or
DQ3(7:0)
DQ(23:16)
or
DQ2(7:0)
DQ(15:3)
or
DQ1(7:0)
DQ(7:0)
or
DQ0(7:0)
G
A(18:0)
W
3
E
3
E
2
E1
E0
W2
W
1
W0
Standard Products
QCOTS
TM UT8Q512K32 16Megabit SRAM MCM
Advanced Data Sheet
August 6, 2001
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