Fast Read Access Time Power CMOS Operation Maximum Standby Maximu

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Fast Read Access Time Power CMOS Operation Maximum Standby Maximu

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AT27C2048
Fast Read Access Time Power CMOS Operation
Maximum Standby Maximum Active JEDEC Standard Packages 40-Lead PDIP 44-Lead PLCC 40-Lead TSOP Direct Upgrade from 512K (AT27C516 AT27C1024) EPROMs Power Supply High Reliability CMOS Technology 2,000V Protection Latchup Immunity RapidProgramming Algorithm µs/word (typical) CMOS Compatible Inputs Outputs Integrated Product Identification Code Commercial Industrial Temperature Ranges
2-Megabit (128K EPROM AT27C2048
Description
AT27C2048 low-power, high performance 2,097,152-bit one-time programmable read only memory (OTP EPROM) organized 128K bits. requires single power supply normal read mode operation. word accessed less than eliminating need speed-reducing WAIT states. by-16 organization makes this part ideal high-performance microprocessor systems. (continued)
Configurations
Name
Note:
PDIP View
Function Addresses Outputs Chip Enable Output Enable Program Connect
Both pins must connected.
PLCC View
TSOP View Type
0632B-A-06/97
Note:
PLCC package pins DON'T CONNECT.
Description
read mode, AT27C2048 typically consumes Standby mode supply current typically less than AT27C2 ndus anda JEDEC-approved one-time programmable (OTP) plastic PDIP, PLCC, TSOP packages. device features two-line control (CE, eliminate contention high-speed systems. With high density 128K word storage capability, AT27C2048 allows firmware stored reliably accessed system without delays mass storage media. Atmel's AT27C2048 additional features that ensure high quality efficient production use. RapidProgramming Algorithm reduces time required program part guarantees reliable programming. Programming time typically only µs/word. Integrated Product Identification Code electronically identifies device manufacturer. This feature used industry standard programming equipment select proper programming algorithms voltages.
System Considerations
Switching between active standby conditions Chip Enable produce transient voltage excursions. Unless accommodated system design, these transients exceed data sheet limits, resulting device non-conformance. minimum, high frequency, inherent inductance, ceramic capacitor should utilized each device. This capacitor should connected between Ground terminals device, close device possible. Additionally, stabilize supply voltage level printed circuit boards with large EPROM arrays, bulk electrolytic capacitor should utilized, again connected between Ground terminals. This capacitor should positioned close possible point where power supply connected array.
AT27C2048
AT27C2048
Block Diagram
Absolute Maximum Ratings*
*NOTICE:
Temperature Under Bias .-55°C +125°C Storage Temperature.-65°C +150°C Voltage with Respect Ground .-2.0V +7.0V(1) Voltage with Respect Ground .-2.0V +14.0V(1) Supply Voltage with Respect Ground .-2.0V +14.0V(1)
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. This stress rating only functional operation device these other conditions beyond those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
Note:
Maximum voltage -0.6V which undershoot 2.0V pulses less than Maximum output voltage 0.75V which overshoot +7.0V pulses less than
Operating Modes
Mode/Pin Read Output Disable Standby Rapid Program(2)
X(1)
VH(3)
X(1) X(5)
Outputs DOUT High High DOUT High Identification Code
Verify Inhibit Product Identification
Notes:
VIH. Refer Programming characteristics. 12.0 0.5V. identifier words selected. inputs held (VIL), except which which toggled (VIL) select Manufacturer's Identification word high (VIH) select Device Code word. Standby current (ISB) specified with VCC. will cause slight increase ISB.
Operating Conditions Read Operation
AT27C2048 Operating Temperature (Case) Power Supply Com. Ind. 70°C -40°C 85°C 70°C -40°C 85°C 70°C -40°C 85°C 70°C -40°C 85°C 70°C -40°C 85°C
Operating Characteristics Read Operation
Symbol IPP1(2) Parameter Input Load Current Output Leakage Current VPP(1) Read/Standby Current Condition VOUT ISB1 (CMOS) 0.3V ISB2 (TTL) 0.5V MHz, IOUT -0.6 -400 Units
VCC(1)
Standby Current
Notes:
Active Current Input Voltage Input High Voltage Output Voltage Output High Voltage
must applied simultaneously before VPP, removed simultaneously after VPP. connected directly VCC, except during programming. supply current would then IPP.
Characteristics Read Operation
AT27C2048 Symbol tACC(3) tCE(2) tOE(2)(3) tDF(4)(5) Parameter Address Output Delay Output Delay Output Delay High Output Float, whichever occurred first Output Hold from Address, whichever occurred first Condition Units
tOH(4)
Notes:
Waveforms Read Operation diagram.
AT27C2048
AT27C2048
Waveforms Read Operation(1)
Notes:
Timing measurement references 0.8V 2.0V. Input drive levels 0.45V 2.4V, unless otherwise specified. delayed after falling edge without impact tCE. delayed tACC after address valid without impact tACC. This parameter only sampled 100% tested. Output float defined point when data longer driven.
Input Test Waveforms Measurement Levels
devices only:
Output Test Load
(10% 90%)
-70, -90, devices:
Note:
including capacitance, except devices, where
(10% 90%)
Capacitance
25°C)(1)
COUT
Note:
Units
Conditions VOUT
Typical values nominal supply voltage. This parameter only sampled 100% tested.
Programming Waveforms(1)
Notes:
Input Timing Reference 0.8V 2.0V VIH. tDFP characteristics device must accommodated programmer. When programming AT27C2048, capacitor required across ground suppress spurious voltage transients.
Programming Characteristics
5°C, 0.25V, 13.0 0.25V Limits Symbol ICC2 IPP2 Parameter Input Load Current Input Level Input High Level Output Voltage Output High Voltage Supply Current (Program Verify) Supply Current Product Identification Voltage 11.5 -400 12.5 Test Conditions VIL, -0.6 Units
AT27C2048
AT27C2048
Programming Characteristics
5°C, 0.25V, 13.0 0.25V Test Conditions(1) Symbol tOES tDFP tVPS tVCS tPRT
Notes:
Limits Conditions Test Input Rise Fall Times (10% 90%) 20ns Input Pulse Levels 0.45V 2.4V Input Timing Reference Level 0.8V 2.0V Units 52.5
Parameter Address Setup Time Setup Time Data Setup Time Address Hold Time Data Hold Time High Output Float Delay(2) Setup Time Setup Time Program Pulse Width Data Valid from Pulse Rise Time During Programming
Output Timing Reference Level 0.8V 2.0V
47.5
must applied simultaneously before removed simultaneously after VPP. This parameter only sampled 100% tested. Output Float defined point where data longer driven -see timing diagram. Program Pulse width tolerance µsec
Atmel's 27C2048 Intergrated Product Identification Code
Pins Codes Manufacturer Device Type 015-08 Data 001E 00F7
AT27C2048
Rapid Programming Algorithm
pulse width used program. address first location. raised 6.5V raised 13.0V. Each address first programmed with pulse without verification. Then verification/reprogramming loop executed each address. event word fails pass verification, successive pulses applied with verification after each pulse. word fails verify after pulses have been applied, part considered failed. After word verifies properly, next address selected until have been checked. then lowered 5.0V 5.0V. words read again compared with original data determine device passes fails.
AT27C2048
Ordering Information
tACC (ns) (mA) Active Standby Ordering Code AT27C2048-55JC AT27C2048-55PC AT27C2048-55VC AT27C2048-55JI AT27C2048-55PI AT27C2048-55VI AT27C2048-70JC AT27C2048-70PC AT27C2048-70VC AT27C2048-70JI AT27C2048-70PI AT27C2048-70VI AT27C2048-90JC AT27C2048-90PC AT27C2048-90VC AT27C2048-90JI AT27C2048-90PI AT27C2048-90VI AT27C2048-12JC AT27C2048-12PC AT27C2048-12VC AT27C2048-12JI AT27C2048-12PI AT27C2048-12VI AT27C2048-15JC AT27C2048-15PC AT27C2048-15VC AT27C2048-15JI AT27C2048-15PI AT27C2048-15VI Package 40P6 40P6 40P6 40P6 40P6 40P6 40P6 40P6 40P6 40P6 Operation Range Commercial (0°C 70°C) Industrial (-40°C 85°C) Commercial (0°C 70°C) Industrial (-40°C 85°C) Commercial (0°C 70°C) Industrial (-40°C 85°C) Commercial (0°C 70°C) Industrial (-40°C 85°C) Commercial (0°C 70°C) Industrial (-40°C 85°C)
Package Type 40P6 Lead, Plastic J-Leaded Chip Carrier (PLCC) Lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) Lead, Plastic Thin Small Outline Package (TSOP)

Fast Read Access Time Power CMOS Operation Maximum Standby Maximu

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