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PDF SMJ27C256 Data sheet ( Hoja de datos )
| Número de pieza | SMJ27C256 | |
| Descripción | UVEPROM | |
| Fabricantes | Austin Semiconductor | |
| Logotipo |  |
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Austin Semiconductor, Inc.
UVEPROM
SMJ27C256
256K UVEPROM
UV Erasable Programmable
Read-Only Memory
AVAILABLE AS MILITARY
SPECIFICATIONS
• SMD 5962-86063
• MIL-STD-883
FEATURES
• Organized 32,768 x 8
• Single +5V ±10% power supply
• Pin-compatible with existing 256K ROM’s and
EPROM’s
• All inputs/outputs fully TTL compatible
• Power-saving CMOS technology
• Very high-speed SNAP! Pulse Programming
• 3-state output buffers
• 400-mV DC assured noise immunity with standarad
TTL loads
• Latchup immunity of 250 mA on all input and output
pins
• Low power dissipation (CMOS Input Levels)
PActive - 165mW Worst Case
PStandby - 1.7mW Worst Case (CMOS-input levels)
OPTIONS
• Timing
150ns access
170ns access
200ns access
250ns access
300ns access
MARKING
-15
-17
-20
-25
-30
• Package(s)
Ceramic DIP (600mils)
J
No. 110
• Operating Temperature Ranges
Military (-55oC to +125oC) M
For more products and information
please visit our web site at
www.austinsemiconductor.com
PIN ASSIGNMENT
(Top View)
32-Pin DIP (J)
(600 MIL)
VPP
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 Vcc
27 A14
26 A13
25 A8
24 A9
23 A11
22 G\
21 A10
20 E\
19 DQ7
18 DQ6
17 DQ5
16 DQ4
15 DQ3
Pin Name
Function
A0 - A14 Address Inputs
DA0-DQ7 Inputs (programming)/Outputs
E\ Chip Enable/Power Down
G\ Output Enable
GND Ground
VCC 5V Supply
VPP 13V Programming Power Supply
GENERAL DESCRIPTION
The SMJ27C256 series is a set of 262,144 bit, ultraviolet-
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
outputs are 3-state for connecting multiple devices to a
common bus. The SMJ27C256 is pin-compatible with
28-pin 256K ROMs and EPROMs. It is offered in a 600mil
dual-in-line ceramic pagackage (J suffix) rated for operation
from -55°C to 125°C.
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
programmable by the SNAP! Pulse programming algorithm.
The SNAP! Pulse programming algorithm uses a VPP of 13V
and a VCC of 6.5V for a nominal programming time of four
seconds. For programming outside the system, existing
EPROM programmers can be used. Locations can be
programmed singly, in blocks, or at random.
SMJ27C256
Rev. 1.0 9/01
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
1
1 page  
Austin Semiconductor, Inc.
UVEPROM
SMJ27C256
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage Range, VCC**...........................-0.6V to +7.0V
Supply Voltage Range, Vpp**.........................-0.6V to +14.0V
Input Voltage Range, All inputs except A9**..-0.6V to +6.5V
A9.....-0.6V to +13.5V
Output Voltage Range**...............................-0.6V to VCC +1V
Minimum Operating Free-air Temperature, TA..............-55°C
Maximum Operating Case Temperature, TC...................125°C
Storage Temperature Range, Tstg.....................-65°C to 150°C
*Stresses greater than 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 above those indicated in the
operation section of this specification is not implied.
Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
** All voltage values are with respect to GND.
RECOMMENDED OPERATING CONDITIONS
VCC
Supply Voltage
Read Mode1
SNAP! Pulse programming algorithm
VPP
Supply Voltage
Read Mode2
SNAP! Pulse programming algorithm
MIN
4.5
6.25
12.75
TYP
5
6.5
13
MAX
5.5
6.75
VCC-0.6
13.25
UNIT
V
V
V
V
VIH High-level input voltage
VIL Low-level input voltage
TTL inputs
2
CMOS inputs VCC-0.2
TTL inputs
-0.5
CMOS inputs -0.5
VCC+1
VCC+1
0.8
0.2
V
V
V
V
VID Voltage level on A9 for signature mode
11.5
13 V
TA Operating free-air temperature
-55 °C
TC Operating case temperature
+125
°C
NOTES:
1. VCC must be applied before or at the same time as VPP and removed after or at the same time as VPP. The deivce must not be inserted into or removed from the
board when VPP or VCC is applied.
2. VPP can be connected to VCC directly (except in the program mode). VCC supply current in this case would be ICC2 + IPP1.
ELECTRICAL CHARACTERISTICS OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE AND
OPERATING FREE-AIRTEMPERATURE
PARAMETER
TEST CONDITIONS
MIN TYP1 MAX UNIT
VOH High-level output voltage
IOH = -400µA
2.4
V
VOL Low-level output voltage
IOL = 2.1mA
0.4 V
II Input current (leakage)
VI = 0V to 5.5V
±1 µA
IO Output current (leakage)
VO = 0V to VCC
±1 µA
IPP1 VPP supply current
IPP2 VPP supply current (during program pulse)2
VPP = VCC = 5.5V
VPP = 13V
10 µA
35 50 mA
ICC1
VCC supply current (standby)
TTL-Input Level VCC = 5.5V, E\=VIH
CMOS-Input Level VCC = 5.5V, E\=VCC
500 µA
300 µA
ICC2 VCC supply current (active)
'27C256-15
'27C256-17
'27C256-20
'27C256-25
E\=VIL, VCC=5.5V
tcycle = minimum, outputs
open
15 25 mA
IOS Output current (leakage)
NOTES:
1. Typical values are at TA=25°C and nominal voltages.
2. This parameter has been characterized at 25°C and is not tested.
100 mA
SMJ27C256
Rev. 1.0 9/01
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
5
5 Page 
Austin Semiconductor, Inc.
UVEPROM
SMJ27C256
ASI TO DSCC PART NUMBER
CROSS REFERENCE*
ASI Package Designator J
TI Part #**
SMJ27C256-15JM
SMJ27C256-17JM
SMJ27C256-20JM
SMJ27C256-25JM
SMJ27C256-30JM
SMD Part #
5962-8606305XA
5962-8606304XA
5962-8606301XA
5962-8606302XA
5962-8606303XA
* ASI part number is for reference only. Orders received referencing the SMD part number will be processed per the SMD.
** Parts are listed on SMD under the old Texas Instruments part number. ASI purchased this product line in November of 1999.
SMJ27C256
Rev. 1.0 9/01
11
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet SMJ27C256.PDF ] | |
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