Contact Us 0755-83210559 ext. 805




For Reference Only

Part Number AT27C1024-70VI
Manufacturer Microchip Technology
Description IC OTP 1MBIT 70NS 40VSOP
Datasheet AT27C1024-70VI Datasheet
Package 40-TFSOP (0.488", 12.40mm Width)
In Stock 31,636 piece(s)
Unit Price Request a Quote
Lead Time Can Ship Immediately
Estimated Delivery Time Sep 24 - Sep 29 (Choose Expedited Shipping)
Request for Quotation

Part Number # AT27C1024-70VI (Memory) is manufactured by Microchip Technology and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

For AT27C1024-70VI specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add AT27C1024-70VI with quantity into BOM. does NOT require any registration to request a quote of AT27C1024-70VI.

AT27C1024-70VI Specifications

ManufacturerMicrochip Technology
CategoryIntegrated Circuits (ICs) - Memory
Datasheet AT27C1024-70VIDatasheet
Package40-TFSOP (0.488", 12.40mm Width)
Memory TypeNon-Volatile
Memory FormatEPROM
TechnologyEPROM - OTP
Memory Size1Mb (64K x 16)
Memory InterfaceParallel
Clock Frequency-
Write Cycle Time - Word, Page-
Access Time70ns
Voltage - Supply4.5 V ~ 5.5 V
Operating Temperature-40°C ~ 85°C (TC)
Mounting TypeSurface Mount
Package / Case40-TFSOP (0.488", 12.40mm Width)
Supplier Device Package40-VSOP

AT27C1024-70VI Datasheet

Page 1

Page 2

1 PDIP Top View 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 VPP CE O15 O14 O13 O12 O11 O10 O9 O8 GND O7 O6 O5 O4 O3 O2 O1 O0 OE VCC PGM NC A15 A14 A13 A12 A11 A10 A9 GND A8 A7 A6 A5 A4 A3 A2 A1 A0 VSOP Top View Type 1 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 A9 A10 A11 A12 A13 A14 A15 NC PGM VCC VPP CE O15 O14 O13 O12 O11 O10 O9 O8 GND A8 A7 A6 A5 A4 A3 A2 A1 A0 OE O0 O1 A2 O3 O4 O5 O6 O7 GND Features • Fast Read Access Time - 45 ns • Low-Power CMOS Operation – 100 µA max. Standby – 30 mA max. Active at 5 MHz • JEDEC Standard Packages – 40-Lead 600-mil PDIP – 44-Lead PLCC – 40-Lead VSOP (10 mm x 14 mm) • Direct Upgrade from 512K (AT27C516) EPROM • 5V ± 10% Power Supply • High-Reliability CMOS Technology – 2000V ESD Protection – 200 mA Latchup Immunity • Rapid™ Programming Algorithm - 100 µs/word (typical) • CMOS and TTL Compatible Inputs and Outputs • Integrated Product Identification Code • Commercial, Industrial and Automotive Temperature Ranges Description The AT27C1024 is a low-power, high-performance 1,048,576 bit one-time program- mable read only memory (OTP EPROM) organized 64K by 16 bits. It requires only one 5V power supply in normal read mode operation. Any word can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states. The by-16 orga- Rev. 0019J–07/98 AT27C1024 1-Megabit (64K x 16) OTP EPROM AT27C1024 Note: Both GND pins must be connected. Pin Configurations Pin Name Function A0 - A15 Addresses O0 - O15 Outputs CE Chip Enable OE Output Enable PGM Program Strobe NC No Connect (continued) PLCC Top View 7 8 9 10 11 12 13 14 15 16 17 39 38 37 36 35 34 33 32 31 30 29 O12 O11 O10 O9 O8 GND NC O7 O6 O5 O4 A13 A12 A11 A10 A9 GND NC A8 A7 A6 A5 6 5 4 3 2 1 4 4 4 3 4 2 4 1 4 0 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 O 3 O 2 O 1 O 0 O E N C A 0 A 1 A 2 A 3 A 4 O 1 3 O 1 4 O 1 5 C E V P P N C V C C P G M N C A 1 5 A 1 4

Page 3

AT27C10242 nization make this part ideal for high-performance 16- and 32-bit microprocessor systems. In read mode, the AT27C1024 typically consumes 15 mA. Standby mode supply current is typically less than 10 µA. The AT27C1024 is available in industry standard JEDEC- approved one-time programmable (OTP) plastic PDIP, PLCC, and VSOP packages. The device features two-line control (CE, OE) to eliminate bus contention in high-speed systems. With high density 64K word storage capabil ity, the AT27C1024 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media. Atmel’s 27C1024 have additional features to ensure high quality and efficient production use. The Rapid™ Program- ming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 µs/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. 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 tran- sients may exceed data sheet limits, resulting in device non-conformance. At a minimum, a 0.1 µF high frequency, low inherent inductance, ceramic capacitor should be uti- lized for each device. This capacitor should be connected between the VCC 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 µF 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

Page 4

AT27C1024 3 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. Notes: 1. X can be VIL or VIH. 2. Refer to Programming Characteristics. 3. VH = 12.0 ± 0.5V. 4. 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. 5. Standby VCC current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in ISB. Absolute Maximum Ratings* Temperature Under Bias............................... -55°C to + 125°C *NOTICE: Stresses beyond those listed under “Absolute Maxi- mum 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 condi- tions beyond those indicated in the operational sec- tions of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Storage Temperature .................................... -65°C to + 150°C 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) Operating Modes Mode/Pin CE OE PGM Ai VPP Outputs Read VIL VIL X (1) Ai X DOUT Output Disable X VIH X X X High Z Standby VIH X X X X (5) High Z Rapid Program(2) VIL VIH VIL Ai VPP DIN PGM Verify VIL VIL VIH Ai VPP DOUT PGM Inhibit VIH X X X VPP High Z Product Identification(4) VIL VIL X A9 = VH (3) A0 = VIH or VIL A1 - A15 = VIL VCC Identification Code

Page 5

AT27C10244 Notes: 1. VCC must be applied simultaneously or before VPP, and removed simultaneously 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.. Note: 2, 3, 4, 5. - see AC Waveforms for Read Operation. DC and AC Operating Conditions for Read Operation AT27C1024 -45 -55 -70 -90 -12 -15 Operating Temp. (Case) Com. 0°C - 70°C 0°C - 70°C 0°C - 70°C 0°C - 70°C 0°C - 70°C 0°C - 70°C Ind. -40°C - 85°C -40°C - 85°C -40°C - 85°C -40°C - 85°C -40°C - 85°C -40°C - 85°C Auto. -40°C - 125°C -40°C - 125°C -40°C - 125°C VCC Power Supply 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10% DC and Operating Characteristics for Read Operation Symbol Parameter Condition Min Max Units ILI Input Load Current VIN = 0V to VCC Com., Ind. ±1 µA Auto. ±5 µA ILO Output Leakage Current VOUT = 0V to VCC Com., Ind. ±5 µA Auto. ±10 µA IPP1 (2) VPP (1)) Read/Standby Current VPP = VCC 10 µA ISB VCC (1) Standby Current ISB1 (CMOS), CE = VCC ± 0.3V 100 µA ISB2 (TTL), CE = 2.0 to VCC + 0.5V 1 mA ICC VCC Active Current f = 5 MHz, IOUT = 0 mA, CE = VIL 30 mA VIL Input Low Voltage -0.6 0.8 V VIH Input High Voltage 2.0 VCC + 0.5 V VOL Output Low Voltage IOL = 2.1 mA 0.4 V VOH Output High Voltage IOH = -400 µA 2.4 V AC Characteristics for Read Operation Symbol Parameter Condition AT27C1024 Units -45 -55 -70 -90 -12 -15 Min Max Min Max Min Max Min Max Min Max Min Max tACC (3) Address to Output Delay CE = OE = VIL 45 55 70 90 120 150 ns tCE (2) CE to Output Delay OE = VIL 45 55 70 90 120 150 ns tOE (2)(3) OE to Output Delay CE = VIL 20 25 25 30 35 50 ns tDF (4)(5) OE or CE High to Output Float, whichever occurred first 20 25 25 30 30 40 ns tOH Output Hold from Address, CE or OE, whichever occurred first 7 7 7 0 0 0 ns

Page 6

AT27C1024 5 AC Waveforms for Read Operation(1) Notes: 1. Timing measurement reference level is 1.5V for -45 and -55 devices. Input AC drive levels are VIL = 0.0V and VIH = 3.0V. Timing measurement reference levels for all other speed grades are VOL = 0.8V and VOH = 2.0V. Input AC drive levels are VIL = 0.45V and VIH = 2.4V. 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. Note: 1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested. Pin Capacitance f = 1 MHz, T = 25°C(1) Symbol Typ Max Units Conditions CIN 4 10 pF VIN = 0V COUT 8 12 pF VOUT = 0V Input Test Waveforms and Measurement Levels For -45 and -55 Devices Only For -70 and slower Devices Only Output Test Load Note: CL = 100 pF including jig capacitance except -45 and -55 devices, where CL = 30 pF.

Page 7

AT27C10246 Programming Waveforms(1) Notes: 1. The Input Timing Reference is 0.8V for VIL and 2.0V for VIH. 2. tOE and tDFP are characteristics of the device but must be accommodated by the programmer. 3. When programming the AT27C1024 a 0.1 µF capacitor is required across VPP and ground to suppress sputious voltage transients. DC Programming Characteristics TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V Symbol Parameter Test Conditions Limits UnitsMin Max ILI Input Load Current VIN = VIL, VIH ±10 µA VIL Input Low Level -0.6 0.8 V VIH Input High Level 2.0 VCC + 0.1 V VOL Output Low Voltage IOL = 2.1 mA 0.4 V VOH Output High Voltage IOH = -400 µA 2.4 V ICC2 VCC Supply Current (Program and Verify) 50 mA IPP2 VPP Supply Current CE = PGM = VIL 30 mA VID A9 Product Identification Voltage 11.5 12.5 V

Page 8

AT27C1024 7 Notes: 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 µsec ± 5%. AC Programming Characteristics TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V Symbol Parameter Test Conditions(1) Limits UnitsMin Max tAS Address Setup Time Input Rise and Fall Times (10% to 90%) 20ns Input Pulse Levels 0.45V to 2.4V Input Timing Reference Level 0.8V to 2.0V Output Timing Reference Level 0.8V to 2.0V 2 µs tCES CE Setup Time 2 µs tOES OE Setup Time 2 µs tDS Data Setup Time 2 µs tAH Address Hold Time 0 µs tDH Data Hold Time 2 µs tDFP OE High to Output Float Delay (2) 0 130 ns tVPS VPP Setup Time 2 µs tVCS VCC Setup Time 2 µs tPW PGM Program Pulse Width (3) 95 105 µs tOE Data Valid from OE 150 ns tPRT VPP Pulse Rise Time During Programming 50 ns Atmel’s 27C1024 Integrated Product Identification Code Codes Pins Hex DataA0 O15-O8 O7 O6 O5 O4 O3 O2 O1 O0 Manufacturer 0 0 0 0 0 1 1 1 1 0 001E Device Type 1 0 1 1 1 1 0 0 0 1 00F1

Page 9

AT27C10248 Rapid Programming Algorithm A 100 µs 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 µs 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 µs 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 orig- inal data to determine if the device passes or fails.

Page 10

AT27C1024 9 Ordering Information tACC (ns) ICC (mA) Ordering Code Package Operation RangeActive Standby 45 30 0.1 AT27C1024-45JC AT27C1024-45PC AT27C1024-45VC 44J 40P6 40V Commercial (0°C to 70°C) 30 0.1 AT27C1024-45JI AT27C1024-45PI AT27C1024-45VI 44J 40P6 40V Industrial (-40°C to 85°C) 55 30 0.1 AT27C1024-55JC AT27C1024-55PC AT27C1024-55VC 44J 40P6 40V Commercial (0°C to 70°C) 30 0.1 AT27C1024-55JI AT27C1024-55PI AT27C1024-55VI 44J 40P6 40V Industrial (-40°C to 85°C) 70 30 0.1 AT27C1024-70JC AT27C1024-70PC AT27C1024-70VC 44J 40P6 40V Commercial (0°C to 70°C) 30 0.1 AT27C1024-70JI AT27C1024-70PI AT27C1024-70VI 44J 40P6 40V Industrial (-40°C to 85°C) Package Type 44J 44-Lead, Plastic J-Leaded Chip Carrier (PLCC) 40P6 40-Lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 40V 40-Lead, Plastic Thin Small Outline Package (VSOP) 10 x 14 mm (continued)

AT27C1024-70VI Reviews

Average User Rating
5 / 5 (117)
★ ★ ★ ★ ★
5 ★
4 ★
3 ★
2 ★
1 ★

Write a Review

Not Rated
Thanks for Your Review!


August 21, 2020

Itams as described Fast and cheap shipping.


August 17, 2020

Very effective shopping path, service steady as a rock, keep up the great work.


August 16, 2020

good item, quick delivery, prefer to recommended.


August 16, 2020

I always enjoy shopping with Heisener, never disappoint me, most dependable, and no long waiting for deliveries.


August 15, 2020

Excellent website experience for search any product I want, problem solvers. You guys I can trust and reply on.

Patr***** Ross

August 1, 2020

Great product at a good price. No complaints.


July 30, 2020

The items I want are often in stock and available in small quantities.


July 30, 2020

Excellent sales and service. Thank you. Buy with confidence.


July 26, 2020

All resistors exactly -0.01%. Pretty good.


July 8, 2020

Does what it says. As with this this type of device it is important to have it mounted so that heat can dissipate. The higher the amperage the hotter the device.

AT27C1024-70VI Guarantees

Service Guarantee

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantee

Quality Guarantees

We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

AT27C1024-70VI Packaging

Verify Products
Customized Labels
Professional Packaging

AT27C1024-70VI Related Products

SIT1602BI-81-30N-25.000000T SIT1602BI-81-30N-25.000000T SiTIME, -40 TO 85C, 7050, 20PPM, 3.0V, 2, -, - View
BFC2373FM275MI BFC2373FM275MI Vishay BC Components, CAP FILM 2.7UF 5% 400VDC RADIAL, Radial, - View
C316C222F3G5TA C316C222F3G5TA KEMET, CAP CER 2200PF 25V C0G RADIAL, Radial, - View
DSPIC33EP16GS502T-I/MX DSPIC33EP16GS502T-I/MX Microchip Technology, IC MCU 16BIT 16KB FLASH 28UQFN, 28-UQFN Exposed Pad, - View
hotST72F361K9TC ST72F361K9TC STMicroelectronics, IC MCU 8BIT 60KB FLASH 32LQFP, 32-LQFP, - View
1-1776491-8 1-1776491-8 TE Connectivity AMP Connectors, TERMINAL BLK 18POS 5MM SIDE ENT, -, - View
NC05A2800000G NC05A2800000G Amphenol Anytek, TERM BLOCK HDR 5POS VERT 7.5MM, -, - View
643645-3 643645-3 TE Connectivity AMP Connectors, CONN SOCKET SIP 13POS TIN, -, - View
SSM-148-L-DV SSM-148-L-DV Samtec Inc., CONN RCPT .100" 96POS DUAL VERT, -, - View
BCS-130-L-D-HE-012 BCS-130-L-D-HE-012 Samtec Inc., BOX CONNECTOR SOCKET STRIP, -, - View
D38999/26WJ4PE-LC D38999/26WJ4PE-LC TE Connectivity Deutsch Connectors, CONN PLUG HSNG MALE 56POS INLINE, -, - View
Payment Methods
Delivery Services

Quick Inquiry


Certified Quality

Heisener's commitment to quality has shaped our processes for sourcing, testing, shipping, and every step in between. This foundation underlies each component we sell.

ISO9001:2015, ICAS, IAF, UKAS

View the Certificates

Do you have any question about AT27C1024-70VI?

0755-83210559 ext. 805 heisener007 3008774228 Send Message

AT27C1024-70VI Tags

  • AT27C1024-70VI
  • AT27C1024-70VI PDF
  • AT27C1024-70VI datasheet
  • AT27C1024-70VI specification
  • AT27C1024-70VI image
  • Microchip Technology
  • Microchip Technology AT27C1024-70VI
  • buy AT27C1024-70VI
  • AT27C1024-70VI price
  • AT27C1024-70VI distributor
  • AT27C1024-70VI supplier
  • AT27C1024-70VI wholesales

AT27C1024-70VI is Available in