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Microchip Technology AT27BV512-70JU
- Part No.:
- AT27BV512-70JU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27BV512-70JU.pdf
- Description:
- IC EPROM 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,231
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Product details
Overview
AT27BV512-70JU from Atmel is a 64K × 8-bit (512 Kbit) one-time programmable EPROM optimized for low-voltage, battery-powered systems. It operates from 2.7V to 3.6V (or 4.5V–5.5V), delivers 70 ns read access time, consumes ≤20 µA standby current at 3.6V, and supports JEDEC-standard PLCC-32 packaging. It serves as nonvolatile program storage in portable industrial controllers requiring unregulated battery operation.
For engineers reviewing the AT27BV512-70JU datasheet, AT27BV512-70JU pinout, AT27BV512-70JU application, or AT27BV512-70JU equivalent, key selection criteria include dual-supply compatibility (2.7–3.6V / 4.5–5.5V), rapid 100 µs/byte programming, TTL/LVBO interface compliance, and industrial temperature range (−40°C to +85°C).
Technical Context
The AT27BV512-70JU implements a two-line control architecture (CE and OE/VPP) enabling bus contention avoidance in shared-memory systems. Its output drivers are designed to deliver TTL-compatible logic levels at VCC = 3.0V and meet JEDEC LVBO specifications at VCC = 2.7V, eliminating external level shifters in mixed-voltage designs.
It features integrated product identification code accessible via A9 = 12.0V and A0 toggling, allowing automated programming equipment to verify device identity and select correct algorithms. Programming uses a 100 µs CE pulse width at VCC = 6.5V and OE/VPP = 13.0V, with up to 10 reprogramming attempts per byte before failure declaration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64K × 8-bit (524,288 bits), organized for byte-wide parallel access |
| Read Access Time | 70 ns maximum - enables direct replacement of legacy 5V EPROMs in timing-critical boot memory paths |
| Supply Voltage Range | 2.7V–3.6V (unregulated battery) or 4.5V–5.5V - supports dual-host insertion in 3V/5V card slots |
| Standby Current | ≤20 µA at VCC = 3.6V - extends battery life in always-on embedded monitoring devices |
| Active Power @ 5 MHz | 29 mW max at VCC = 3.6V - reduces thermal load in dense PCB layouts with multiple EPROMs |
| Programming Speed | 100 µs/byte typical - cuts firmware update time by >5× versus standard 5V EPROMs |
| Operating Temperature | −40°C to +85°C - qualified for industrial control cabinets and outdoor telemetry units |
Pinout & Package
AT27BV512-70JU is supplied in a 32-lead Plastic J-Leaded Chip Carrier (PLCC) package per JEDEC MS-016 Variation AE. Pin 1 is marked by a corner notch; pins 1 and 17 are No Connect (NC). The package is Pb/halide-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus supporting full 64K address space; CMOS/TTL compatible thresholds |
| O0–O7 | Data Outputs | Tri-state outputs with TTL-level VOH/VOL at VCC = 3.0V; high-Z when CE or OE/VPP inactive |
| CE | Chip Enable | Active-low chip select; controls power state transition between active and standby modes |
| OE/VPP | Output Enable / Program Supply | Dual-function pin: OE during read, VPP (13.0V) during programming; requires external decoupling |
| VCC | Power Supply | Accepts 2.7–3.6V or 4.5–5.5V; must be applied before/removed after OE/VPP per design rules |
| GND | Ground Reference | Common return path; requires 0.1 µF ceramic capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Single device supports both unregulated 2.7–3.6V battery rails and standard 5V ±10% supplies - eliminates BOM duplication for field-upgradable modules |
| Rapid Programming Algorithm | 100 µs/byte typical programming time with automatic verification loop - reduces production test time and improves yield in high-volume programming stations |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device Code (0x0D) readable via A9 = 12.0V and A0 toggle - enables secure, automated programming validation |
| JEDEC-Compatible Packaging | 32-lead PLCC footprint matches AT27C512R - allows drop-in replacement without PCB redesign in legacy systems |
| LVBO & TTL Interface Compliance | Meets JEDEC LVBO spec at 2.7V and LVTTL spec at 3.0V - interoperates directly with 5V microcontrollers and FPGAs without level-shifting circuitry |
Applications
| Portable Data Logger | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Battery-powered environmental sensor node logging data to flash memory with periodic firmware updates via serial interface. IC Role / Device Role / Timing Role: Nonvolatile boot ROM storing initialization code and calibration constants; accessed during cold start and reset recovery. Use Value: 2.7V minimum supply tolerance enables direct connection to aging lithium cells; 70 ns access ensures fast MCU boot within 100 ms. | Use Scenario: Modular programmable logic controller with field-replaceable I/O cards requiring immutable firmware storage. IC Role / Device Role / Timing Role: OTP EPROM holding safety-critical ladder logic interpreter; immune to accidental overwrite during runtime. Use Value: Industrial temperature rating (−40°C to +85°C) and 2,000V ESD protection ensure reliability in electrically noisy factory environments. |
| Medical Diagnostic Handheld | Telecom Line Card Boot Memory |
Use Scenario: Portable ultrasound device using rechargeable Li-ion battery with variable discharge voltage (3.6V → 2.8V). IC Role / Device Role / Timing Role: Primary boot memory for ARM-based SoC; holds bootloader and hardware abstraction layer. Use Value: Unregulated 2.7–3.6V operation eliminates need for buck-boost regulator; <1 µA typical standby current preserves battery charge during idle periods. | Use Scenario: Hot-pluggable telecom line card inserted into 3V or 5V backplane chassis depending on system generation. IC Role / Device Role / Timing Role: Dual-voltage boot ROM enabling single BOM across legacy and new infrastructure deployments. Use Value: Pin compatibility with AT27C512R and dual-supply support allow seamless migration without board respin or firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C512R-70PU | 5V-only operation (4.5–5.5V); no 2.7–3.6V support; same 70 ns speed and PLCC-32 package | Restricted to fixed 5V systems; cannot replace AT27BV512-70JU in battery-powered or dual-voltage designs | Select only when legacy 5V supply stability is guaranteed and low-voltage operation is unnecessary. |
| M27C512-70C6 | 5V-only; 70 ns access; 28-pin SOIC package (not PLCC); higher standby current (100 µA) | Requires PCB layout change due to different footprint and pinout; unsuitable for space-constrained PLCC-based designs | Consider only for cost-sensitive, non-battery applications where SOIC placement is preferred and 5V regulation is available. |
Compared with AT27C512R-70PU and M27C512-70C6, the AT27BV512-70JU uniquely enables unregulated battery operation while maintaining pin compatibility and programming equivalence - critical for portable, hot-pluggable, or mixed-voltage embedded systems where supply flexibility and PCB reuse are design priorities.
Availability
AT27BV512-70JU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, portable medical diagnostics, and telecom line card boot memory requiring stable component supply across extended lifecycle windows.
Supply support for AT27BV512-70JU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Atmel Corporation, now part of Microchip Technology, is a semiconductor innovator specializing in microcontrollers, nonvolatile memory, and secure authentication solutions.
The AT27BV512 belongs to Atmel's low-voltage OTP EPROM product line, engineered specifically for portable, battery-operated, and dual-supply embedded systems where power efficiency, supply flexibility, and industrial-grade reliability are mandatory.
FAQ
What is the operating voltage range for AT27BV512-70JU?
The AT27BV512-70JU operates from 2.7V to 3.6V for unregulated battery applications or from 4.5V to 5.5V for standard 5V systems. It does not support intermediate voltages outside these ranges. During programming, VCC must be set to 6.5V ±0.25V and OE/VPP to 13.0V ±0.25V. This dual-range capability makes AT27BV512-70JU suitable for mixed-voltage host environments such as pluggable cards.
Is AT27BV512-70JU pin-compatible with AT27C512R?
Yes, AT27BV512-70JU is pin-compatible with JEDEC-standard AT27C512R in the 32-lead PLCC package. Both share identical pin functions, pin numbering, and physical footprint. However, AT27BV512-70JU adds dual-voltage operation and lower power consumption while retaining full programming compatibility - enabling direct substitution in existing AT27C512R designs without layout changes.
What programming equipment is required for AT27BV512-70JU?
AT27BV512-70JU uses the same programming algorithm and equipment as AT27C512R. Industry-standard EPROM programmers supporting 13.0V VPP and 6.5V VCC are compatible. The integrated product identification code (0x1E/0x0D) allows automatic device recognition. A 0.1 µF capacitor must be placed between VPP and GND during programming to suppress transients, as specified in the AT27BV512-70JU datasheet.
Does AT27BV512-70JU support industrial temperature operation?
Yes, AT27BV512-70JU is rated for industrial temperature operation from −40°C to +85°C. This specification is validated across all electrical parameters including access time, standby current, and programming margins. The device incorporates 2,000V HBM ESD protection and 200 mA latchup immunity, ensuring robustness in harsh industrial environments where thermal cycling and electrical noise are present.
What is the meaning of "JU" in AT27BV512-70JU?
The "JU" suffix in AT27BV512-70JU denotes the Green (Pb/halide-free) 32-lead PLCC package option. It replaces the older "JI" (standard PLCC) variant and complies with RoHS Directive 2011/65/EU. The "70" indicates 70 ns maximum access time, and "BV" identifies the low-voltage OTP EPROM family. No functional or timing differences exist between JU and JI packages beyond environmental compliance.
AT27BV512-70JU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.7V ~ 3.6V, 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT27BV512-70JU FAQ
1.How can I place an order for AT27BV512-70JU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV512-70JU on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT27BV512-70JU reliable?
The price and inventory of AT27BV512-70JU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV512-70JU is usually 5 days.
3.What payment methods are accepted for AT27BV512-70JU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV512-70JU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV512-70JU?
AT27BV512-70JU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV512-70JU order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT27BV512-70JU?
For technical support, including AT27BV512-70JU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV512-70JU requirements.
6.How does Aetrix verify that AT27BV512-70JU is sourced from the original manufacturer or authorized distributors?
All AT27BV512-70JU products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT27BV512-70JU meets industry standards.
7.What is the process for return or replacement of AT27BV512-70JU?
All AT27BV512-70JU units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV512-70JU, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT27BV512-70JU part is unused and in its original packaging.
Return procedure for AT27BV512-70JU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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