SMJ27C512 Datasheet, PDF (1/11 Pages) Austin Semiconductor – UV Erasable Programmable Read-Only Memory

UVEPROM
SMJ27C512
512K UVEPROM
UV Erasable Programmable
Read-Only Memory
PIN ASSIGNMENT
(Top View)
AVAILABLE AS MILITARY
SPECIFICATIONS
• SMD 5962-87648
• MIL-STD-883
FEATURES
• Organized 65,536 x 8
• High-reliability MIL-PRF-38535 processing
• Single +5V ±10% power supply
• Pin-compatible with existing 512K read-only memories (ROMs)
and electrically programmable ROMs (EPROMs)
• All inputs/outputs fully TTL compatible
• Power-saving CMOS technology
• Very high-speed SNAP! Pulse Programming
• 3-state output buffers
• 400mV minimum DC noise immunity with standard TTL loads
• Latchup immunity of 250mA on all input and output lines
• Low power dissipation (CMOS input levels)
3Active - 193mW (MAX)
3Standby - 1.7mW (MAX)
28-Pin DIP (J) 600-Mils
A15 1
A12 2
A7 3
A6 4
A5 5
A4 6
A3 7
A2 ⁸
A1 ⁹
A0 ¹⁰
DQ0 ¹¹
DQ1 ¹²
DQ2 ¹³
GND ¹⁴
28 ^Vcc
27 ^A14
26 ^A13
25 ^A8
24 A9
23 A11
22 G\/V_PP
21 A10
20 E\
19 DQ7
18 DQ6
17 DQ5
16 DQ4
15 _DQ3
Pin Name
Function
A0 - A15 Address Inputs
DA0-DQ7 Inputs (programming)/Outputs
E\ Chip Enable/Power Down
GND Ground
G\ /V_PP Output Enable/13V Programming
V_CC 5V Power Supply
OPTIONS
• Timing
150ns access
200ns access
250ns access
MARKING
-15
-20
-25
• Package(s)
Ceramic DIP (600mils)
J No. 110
• Operating Temperature Ranges
Military (-55^oC to +125^oC)
M
For more products and information
please visit our web site at
www.micross.com
GENERAL DESCRIPTION
The SMJ27C512 is a set of 65536 by 8-bit (524,288-bit),
ultraviolet (UV) light erasable, electrically programmable
read-only memories. These devices are fabricated using power-
saving CMOS technology for high speed and simple interface
with MOS and bipolar circuits. All inputs (including program
data inputs can be driven by Series 54 TTL circuits without
the use of external pullup resistors. Each output can drive one
Series 54 TTL circuit without external resistors. The data out-
puts are 3-state for connecting multiple devices to a common
bus. The SMJ27C512 is pin-compatible with existing 28-pin
512K ROMs and EPROMs.
Because this EPROM operates from a single 5V supply
(in the read mode), it is ideal for use in microprocessor-based
systems. One other supply (13V) is needed for programming.
All programming signals are TTL level. This device is pro-
grammable by the SNAP! Pulse programming algorithm. The
SNAP! Pulse programming algorithm uses a V_PP of 13V and
a V_CC of 6.5V for a nominal programming time of seven sec-
onds. For programming outside the system, existing EPROM
programmers can be used. Locations may be programmed
singly, in blocks, or at random.
SMJ27512
Rev. 1.2 01/10
Micross Components reserves the right to change products or specifications without notice.
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