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Details, datasheet, quote on part number:WS57C49C-55J
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Datasheet text preview:
WS57C49C
HIGH SPEED 8K x 8 CMOS PROM/RPROM
KEY FEATURES
· Ultra-Fast Access Time
-- -- t ACC = 25 ns t CS = 12 ns
· Pin Compatible with Bipolar PROMs · Immune to Latch-UP
-- Up to 200 mA
· Low Power Consumption · Fast Programming
· ESD Protection Exceeds 2000 V · Available in 300 Mil DIP and PLDCC
GENERAL DESCRIPTION
The WS57C49C is a High Performance 64K UV Erasable Electrically Re-Programmable Read Only Memory (RPROM). It is manufactured in an advanced CMOS technology which enables it to operate at Bipolar PROM speeds while consuming only 25% of the power required by its Bipolar counterparts. A further advantage of the WS57C49C over Bipolar PROM devices is the fact that it utilizes a proven EPROM technology. This enables the entire memory array to be tested for switching characteristics and functionality after assembly. Unlike devices which cannot be erased, every WS57C49C in a windowed package is 100% tested with worst case test patterns both before and after assembly. The WS57C49C is configured in the standard Bipolar PROM pinout which provides an easy upgrade path for systems which are currently using Bipolar PROMs, or its predecessor, the WS57C49B.
BLOCK DIAGRAM
PIN CONFIGURATION
TOP VIEW
8 A5 - A12 ROW ADDRESSES
ROW DECODER
EPROM ARRAY
Chip Carrier
NC
65,536 BITS
CERDIP/Plastic DIP Flatpack
A7 A6 A5 A10 A4 CS1/VPP A3 A11 A2 A12 A1 NC A0 O7 O0 O6 O1 O2 GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VC C A8 A9 A10 CS1/VPP A11 A12 O7 O6 O5 O4 O3
A5 A 6 A 7
5 A0 - A4 COLUMN ADDRESSES
VCC A8 A9
COLUMN DECODER
SENSE AMPLIFIERS
A4 A3 A2 A1 A0 NC O0
28 27 26 1 5 25 6 24 7 23 8 22 9 21 10 20 11 19 12 13 14 15 16 17 18 O1 O2 NC O3 O4 O5
432
CS1/ VPP
GND
8
OUTPUTS
PRODUCT SELECTION GUIDE
PARAMETER Address Access Time (Max) CS to Output Valid Time (Max) 57C49C-25 25 ns 12 ns 57C49C-35 35 ns 20 ns 57C49C-45 45 ns 25 ns 57C49C-55 55 ns 25 ns 57C49C-70 70 ns 25 ns
Return to Main Menu
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WS57C49C
ABSOLUTE MAXIMUM RATINGS*
Storage Temperature....65° to + 150°C Voltage on any Pin with Respect to Ground ... 0.6V to +7V VPP with Respect to Ground..........0.6V to + 13V ESD Protection ........> 2000V
MODE SELECTION
PINS MODE Read Output Disable Program Program Verify CS1/VPP VI L VI H VPP VI L VCC VCC VCC VCC VCC OUTPUTS DOUT High Z DI N DOUT
*NOTICE:
Stresses above 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 operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect device reliability.
OPERATING RANGE
RANGE Commercial Industrial Military TEMPERATURE 0°C to +70°C 40°C to +85°C 55°C to +125°C VCC +5V ± 10% +5V ± 10% +5V ± 10%
DC READ CHARACTERISTICS Over Operating Range. (See Above)
SYMBOL VIL VIH VOL VOH PARAMETER Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage VCC Active Current (CMOS) (Note 3) (Note 3) IOL = 16 mA IOH = 4 mA VCC = 5.5 V, f = 0 MHz (Note 1), Output Not Loaded Add 3 mA/MHz for AC Operation VCC = 5.5 V, f = 0 MHz (Note 2), Output Not Loaded Add 3 mA/MHz for AC Operation VIN = 5.5V or Gnd VOUT = 5.5 V or Gnd Comm'l Industrial Military Comm'l Industrial Military 10 10 2.4 30 35 35 40 50 50 10 10 TEST CONDITIONS MIN 0.1 2.0 MAX 0.8 VCC + 0.3 0.4 UNITS V V V V mA mA mA mA mA mA µA µA
ICC1
ICC2
VCC Active Current (TTL) Input Leakage Current Output Leakage Current
ILI ILO
NOTES:
1. CMOS inputs: GND ± 0.3V or VCC ± 0.3V. 2. TTL inputs: VIL 0.8V, VIH 2.0V. 3. These are absolute voltages with respect to device ground pin and include all overshoots due to system and/or tester noise. Do not attempt to test these values without suitable equipment.
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WS57C49C
AC READ CHARACTERISTICS Over Operating Range. (See Above)
PARAMETER Address to Output Delay CS1 to Output Delay Output Disable to Output Float* Address to Output Hold SYMBOL tACC tCS tDF tOH 0 57C49C-25 57C49C-35 57C49C-45 57C49C-55 57C49C-70
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
UNITS
25 12 12 0
35 20 25 0
45 25 25 0
55 25 25 0
70 25 ns 25
*Sampled, Not 100% Tested.
AC READ TIMING DIAGRAM
ADDRESSES
VALID tACC tOH
CS tCS OUTPUTS VALID tDF
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