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Features
* Fast Read Access Time - 90 ns * Dual Voltage Range Operation * * * * * * * *
- Unregulated Battery Power Supply Range, 2.7V to 3.6V or Standard 5V 10% Supply Range Pin Compatible with JEDEC Standard AT27C1024 Low Power CMOS Operation - 20 A max. (less than 1 A typical) Standby for VCC = 3.6V - 36 mW max. Active at 5 MHz for VCC = 3.6V JEDEC Standard Surface Mount Packages - 44-Lead PLCC - 40-Lead VSOP (10 x 14mm) High Reliability CMOS Technology - 2,000V ESD Protection - 200 mA Latchup Immunity RapidTM Programming Algorithm - 100 s/word (typical) CMOS and TTL Compatible Inputs and Outputs - JEDEC Standard for LVTTL and LVBO Integrated Product Identification Code Commercial and Industrial Temperature Ranges
Description
The AT27BV1024 is a high performance, low power, low voltage 1,048,576-bit onetime programmable read only memory (OTP EPROM) organized as 64K by 16 bits. It requires only one supply in the range of 2.7V to 3.6V in normal read mode operation. The by-16 organization makes this part ideal for portable and handheld 16- and 32-bit microprocessor based systems using either regulated or unregulated battery power. (continued)
1-Megabit (64K x 16) Unregulated Battery-VoltageTM High-Speed OTP EPROM AT27BV1024
Pin Configurations
Pin Name A0 - A15 O0 - O15 CE OE PGM NC Note: Function Addresses Outputs Chip Enable
Output Enable Program Strobe No Connect Both GND pins must be connected. PLCC Top View
O13 O14 O15 CE VPP NC VCC PGM NC A15 A14 A9 A10 A11 A12 A13 A14 A15 NC PGM VCC VPP CE O15 O14 O13 O12 O11 O10 O9 O8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 GND A8 A7 A6 A5 A4 A3 A2 A1 A0 OE O0 O1 O2 O3 O4 O5 O6 O7 GND
VSOP Top View Type 1
O3 O2 O1 O0 OE NC A0 A1 A2 A3 A4
18 19 20 21 22 23 24 25 26 27 28
O12 O11 O10 O9 O8 GND NC O7 O6 O5 O4
7 8 9 10 11 12 13 14 15 16 17
6 5 4 3 2 1 44 43 42 41 40
39 38 37 36 35 34 33 32 31 30 29
A13 A12 A11 A10 A9 GND NC A8 A7 A6 A5
Rev. 0631B-10/98
Note: PLCC Package Pins 1 and 23 are DON'T CONNECT.
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Atmel's innovative design techniques provide fast speeds that rival 5V parts while keeping the low power consumption of a 3V supply. At V CC = 2.7V, any word can be accessed in less than 120 ns. With a typical power dissipation of only 18 mW at 5 MHz and VCC = 3V, the AT27BV1024 consumes less than one fifth the power of a standard 5V EPROM. Standby mode supply current is typically less than 1 A at 3V. The AT27BV1024 simplifies system design and stretches battery lifetime even further by eliminating the need for power supply regulation. The AT27BV1024 is available in industry standard JEDECapproved one-time programmable (OTP) plastic PLCC and VSOP packages. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention. The AT27BV1024 operating with V CC at 3.0V produces TTL level outputs that are compatible with standard TTL logic devices operating at VCC = 5.0V. At VCC = 2.7V, the part is compatible with JEDEC approved low voltage battery operation (LVBO) interface specifications. The device is also capable of standard 5-volt operation making it ideally suited for dual supply range systems or card products that are pluggable in both 3-volt and 5-volt hosts. Atmel's AT27BV1024 has additional features to ensure high quality and efficient production use. The RapidTM Pro-
gramming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 s/word. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming algorithms and voltages. The AT27BV1024 programs exactly the same way as a standard 5V AT27C1024 and uses the same programming equipment.
System Considerations
Switching between active and standby conditions via the Chip Enable pin may produce transient voltage excursions. Unless accommodated by the system design, these transients may exceed data sheet limits, resulting in device non-conformance. At a minimum, a 0.1 F high frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the V CC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7 F bulk electrolytic capacitor should be utilized, again connected between the VCC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array.
Block Diagram
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AT27BV1024
AT27BV1024
Absolute Maximum Ratings*
Temperature Under Bias ................................ -55C to +125C Storage Temperature ..................................... -65C to +150C Voltage on Any Pin with Respect to Ground .........................................-2.0V to +7.0V(1) Voltage on A9 with Respect to Ground ......................................-2.0V to +14.0V(1) VPP Supply Voltage with Respect to Ground .......................................-2.0V to +14.0V(1) Note: 1. Minimum voltage is -0.6V dc which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is VCC + 0.75V dc which may overshoot to +7.0V for pulses of less than 20 ns. *NOTICE: Stresses beyond 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 beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability
Operating Modes
Mode \ Pin Read
(2) (2)
CE VIL X VIH
(3)
OE VIL VIH X VIH VIL X VIL
PGM X
(1)
Ai Ai X X Ai Ai X A9 = VH(4) A0 = VIH or VIL A1 - A15 = VIL
VPP X X X(5) VPP VPP VPP VCC
VCC VCC VCC
(2) (2)
Outputs DOUT High Z High Z DIN DOUT High Z Identification Code
Output Disable Standby(2)
X X VIL VIH X X
VCC(2) VCC VCC VCC
(3) (3) (3)
Rapid Program PGM Verify
(3) (3)
VIL VIL VIH VIL
PGM Inhibit
Product Identification(3)(5) Notes: 1. X can be VIL or VIH.
VCC(3)
2. Read, output disable, and standby modes require, 2.7V VCC 3.6V, or 4.5V VCC 5.5V. 3. Refer to Programming Characteristics. Programming modes require VCC = 6.5V. 4. VH = 12.0 0.5V. 5. Two identifier words may be selected. All Ai inputs are held low (VIL), except A9 which is set to VH and A0 which is toggled low (VIL) to select the Manufacturer's Identification word and high (VIH) to select the Device Code word.
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DC and AC Operating Conditions for Read Operation
AT27BV1024-90 Operating Temperature (Case) VCC Power Supply Com. Ind. 0C - 70C -40C - 85C 2.7V to 3.6V 5V 10% AT27BV1024-12 0C - 70C -40C - 85C 2.7V to 3.6V 5V 10% AT27BV1024-15 0C - 70C -40C - 85C 2.7V to 3.6V 5V 10%
DC and Operating Characteristics for Read Operation
Symbol Parameter Condition Min Max Units VCC = 2.7V to 3.6V ILI ILO IPP1(2) ISB ICC VIL Input Load Current Output Leakage Current VPP
(1)
VIN = 0V to VCC VOUT = 0V to VCC VPP = VCC ISB1 (CMOS), CE = VCC 0.3V ISB2 (TTL), CE = 2.0 to VCC + 0.5V f = 5 MHz, IOUT = 0 mA, CE = VIL, VCC = 3.6V VCC = 3.0 to 3.6V VCC = 2.7 to 3.6V -0.6 -0.6 2.0 0.7 x VCC
1 5 10 20 100 8 0.8 0.2 x VCC VCC + 0.5 VCC + 0.5 0.4 0.2 0.1 2.4 VCC - 0.2 VCC - 0.1
A A A A A mA V V V V V V V V V V
Read/Standby Current
VCC(1) Standby Current VCC Active Current Input Low Voltage
VIH
Input High Voltage
VCC = 3.0 to 3.6V VCC = 2.7 to 3.6V IOL = 2.0 mA
VOL
Output Low Voltage
IOL = 100 A IOL = 20 A IOH = -2.0 mA
VOH
Output High Voltage
IOH = -100 A IOH = -20 A
VCC = 4.5V to 5.5V ILI ILO IPP1(2) ISB ICC VIL VIH VOL VOH Input Load Current Output Leakage Current VPP
(1)
VIN = 0V to VCC VOUT = 0V to VCC VPP = VCC ISB1 (CMOS), CE = VCC 0.3V ISB2 (TTL), CE = 2.0 to VCC + 0.5V f = 5 MHz, IOUT = 0 mA, CE = VIL -0.6 2.0 IOL = 2.1 mA IOH = -400 A 2.4
1 5 10 100 1 30 0.8 VCC + 0.5 0.4
A A A A mA mA V V V V
Read/Standby Current
VCC(1) Standby Current VCC Active Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage
Notes:
1. VCC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP . 2. VPP may be connected directly to VCC, except during programming. The supply current would then be the sum of ICC and IPP .
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AT27BV1024
AT27BV1024
AC Characteristics for Read Operation
VCC = 2.7V to 3.6V and 4.5V to 5.5V
AT27BV1024 -90 Symbol tACC(3) tCE(2) tOE(2)(3) tDF(4)(5) tOH Parameter Address to Output Delay CE to Output Delay OE to Output Delay OE or CE High to Output Float, whichever occurred first Output Hold from Address, CE or OE, whichever occurred first 0 Condition CE = OE = VIL OE = VIL CE = VIL Min Max 90 90 30 30 0 Min -12 Max 120 120 35 30 0 Min -15 Max 150 150 50 40 Units ns ns ns ns ns
AC Waveforms for Read Operation(1)
Notes:
1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified. 2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE. 3. OE may be delayed up to tACC - tOE after the address is valid without impact on tACC. 4. This parameter is only sampled and is not 100% tested. 5. Output float is defined as the point when data is no longer driven. 6. When reading a 27BV1024, a 0.1 F capacitor is required across VCC and ground to suppress spurious voltage transients.
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Input Test Waveforms and Measurement Levels
Output Test Load
tR, tF < 20 ns (10% to 90%) Note: CL = 100 pF including jig capacitance.
Pin Capacitance
f = 1 MHz T = 25C (1)
Symbol CIN COUT Note: Typ 4 8 Max 10 12 Units pF pF Conditions VIN = 0V VOUT = 0V
1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.
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AT27BV1024
AT27BV1024
Programming Waveforms(1)
Notes:
1. 2. 3.
The Input Timing Reference is 0.8V for VIL and 2.0V for VIH. tOE and tDFP are characteristics of the device but must be accommodated by the programmer. When programming the AT27BV1024 a 0.1 F capacitor is required across VPP and ground to suppress spurious voltage transients.
DC Programming Characteristics
TA = 25 5C, VCC = 6.5 0.25V, VPP = 13.0 0.25V
Limits Symbol ILI VIL VIH VOL VOH ICC2 IPP2 VID Parameter Input Load Current Input Low Level Input High Level Output Low Voltage Output High Voltage VCC Supply Current (Program and Verify) VPP Supply Current A9 Product Identification Voltage CE = PGM = VIL 11.5 IOL = 2.1 mA IOH = -400 A 2.4 50 30 12.5 Test Conditions VIN = VIL, VIH -0.6 2.0 Min Max 10 0.8 VCC + 0.1 0.4 Units
A
V V V V mA mA V
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AC Programming Characteristics
TA = 25 5C, VCC = 6.5 0.25V, VPP = 13.0 0.25V
Limits Symbol tAS tCES tOES tDS tAH tDH tDFP tVPS tVCS tPW tOE tPRT Notes: Parameter Address Setup Time CE Setup Time OE Setup Time Data Setup Time Address Hold Time Data Hold Time OE High to Output Float Delay(2) VPP Setup Time VCC Setup Time PGM Program Pulse Width(3) Data Valid from OE VPP Pulse Rise Time During Programming Output Timing Reference Level: 0.8V to 2.0V Input Timing Reference Level: 0.8V to 2.0V Input Rise and Fall Times: (10% to 90%) 20 ns Input Pulse Levels: 0.45V to 2.4V Test Conditions
(1)
Min 2 2 2 2 0 2 0 2 2 95
Max
Units s s s s s s
130
ns s s s ns ns
105 150
50
1. VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP . 2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven-- see timing diagram. 3. Program Pulse width tolerance is 100 sec 5%.
Atmel's 27BV1024 Integrated Product Identification Code(1)
Pins Codes Manufacturer A0 0 O15-O8 0 O7 0 O6 0 O5 0 O4 1 O3 1 O2 1 O1 1 O0 0 Hex Data 001E
Device Type 1 0 1 1 1 1 0 0 0 1 00F1 Note: 1. The AT27BV1024 has the same Product Identification Code as the AT27C1024. Both are programming compatible.
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AT27BV1024
AT27BV1024
Rapid Programming Algorithm
A 100 s PGM pulse width is used to program. The address is set to the first location. VCC is raised to 6.5V and VPP is raised to 13.0V. Each address is first programmed with one 100 s PGM pulse without verification. Then a verification / reprogramming loop is executed for each address. In the event a word fails to pass verification, up to 10 successive 100 s pulses are applied with a verification after each pulse. If the word fails to verify after 10 pulses have been applied, the part is considered failed. After the word verifies properly, the next address is selected until all have been checked. VPP is then lowered to 5.0V and VCC to 5.0V. All words are read again and compared with the original data to determine if the device passes or fails.
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Ordering Information
tACC (ns) 90 ICC (mA) Active 8 8 120 8 8 150 8 8 Standby 0.02 0.02 0.02 0.02 0.02 0.02 Ordering Code AT27BV1024-90JC AT27BV1024-90VC AT27BV1024-90JI AT27BV1024-90VI AT27BV1024-12JC AT27BV1024-12VC AT27BV1024-12JI AT27BV1024-12VI AT27BV1024-15JC AT27BV1024-15VC AT27BV1024-15JI AT27BV1024-15VI Package 44J 40V 44J 40V 44J 40V 44J 40V 44J 40V 44J 40V Operation Range Commercial (0C to 70C) Industrial (-40C to 85C) Commercial (0C to 70C) Industrial (-40C to 85C) Commercial (0C to 70C) Industrial (-40C to 85C)
Package Type 44J 40V 44-Lead, Plastic J-Leaded Chip Carrier (PLCC) 40-Lead, Plastic Thin Small Outline Package (VSOP) 10 x 14 mm
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AT27BV1024
AT27BV1024
Packaging Information
44J, 44-Lead, Plastic J-Leaded Chip Carrier (PLCC) Dimensions in Inches and (Millimeters)
JEDEC STANDARD MS-018 AC
40V, 40-Lead, Plastic Thin Small Outline Package (VSOP) Dimensions in Millimeters and (Inches)
JEDEC OUTLINE MO-142 CA
.045(1.14) X 45
PIN NO. 1 IDENTIFY
.045(1.14) X 30 - 45
.012(.305) .008(.203)
.656(16.7) SQ .650(16.5) .032(.813) .026(.660) .695(17.7) SQ .685(17.4)
.630(16.0) .590(15.0) .021(.533) .013(.330)
.050(1.27) TYP .500(12.7) REF SQ
.043(1.09) .020(.508) .120(3.05) .090(2.29) .180(4.57) .165(4.19)
.022(.559) X 45 MAX (3X)
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(c) Atmel Corporation 1998. Atmel Cor poration makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Atmel's Terms and Conditions located on the Company's website. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual proper ty of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel's products are not authorized for use as critical components in life suppor t devices or systems. Marks bearing
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are registered trademarks and trademarks of Atmel Corporation. Printed on recycled paper.
0631B-10/98/xM
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