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Microchip Technology AT28LV010-20JU-319
- Part No.:
- AT28LV010-20JU-319
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT28LV010-20JU-319.pdf
- Description:
- IC EEPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT28LV010-20JU-319 from Atmel is a 1 Mbit (128K × 8) low-voltage paged parallel EEPROM with JEDEC byte-wide pinout, 200 ns read access time, 10 ms maximum page write cycle time, and industrial temperature range (–40°C to +85°C). It operates from a single 3.3 V ± 10% supply, supports hardware/software data protection, and integrates a 128-byte page register for efficient multi-byte writes in embedded memory subsystems.
For engineers reviewing the AT28LV010-20JU-319 datasheet, AT28LV010-20JU-319 pinout, AT28LV010-20JU-319 application, or AT28LV010-20JU-319 equivalent, this device serves as a drop-in replacement for legacy 5 V EEPROMs in space-constrained industrial controllers, firmware storage modules, and configuration memory where low-power CMOS standby (20 µA), fast page write capability, and robust write-cycle detection via DATA polling or toggle bit are critical selection criteria.
Technical Context
The AT28LV010-20JU-319 implements a paged parallel EEPROM architecture with internal address/data latching for up to 128-byte writes, eliminating external address/data bus hold requirements during programming. Its software data protection (SDP) command sequence-three specific write operations to addresses 5555H, 2AAAH, and 5555H-is mandatory before every write and remains enabled at all times.
Write completion is verified via dual methods: DATA polling on I/O7 (complement-to-data during write, true data upon completion) and toggle-bit behavior on I/O6 (toggling until write ends). The device uses CMOS technology with 10⁵ endurance cycles and 10-year data retention, and features hardware safeguards including VCC power-on delay, noise filtering (<15 ns pulse rejection), and CE/OE/WE write inhibit logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), enabling full firmware image or parameter table storage in compact footprint |
| Read Access Time | 200 ns max - supports direct interface with 5 MHz microcontrollers without wait states |
| Page Write Cycle Time | 10 ms max - enables rapid field updates of configuration blocks without system stall |
| Supply Voltage | 3.3 V ± 10% - compatible with modern low-voltage logic families and eliminates level-shifting needs |
| Standby Current | 20 µA CMOS - reduces quiescent power in battery-backed or always-on systems |
| Endurance | 10⁵ write/erase cycles - suitable for applications requiring frequent reconfiguration (e.g., calibration data logging) |
| Data Retention | 10 years at 85°C - ensures long-term reliability in industrial environments without refresh |
Pinout & Package
AT28LV010-20JU-319 is packaged in a 32-lead Plastic J-Leaded Chip Carrier (PLCC), JEDEC MS-016 compliant, with 1.27 mm pitch and 12.32 mm × 14.86 mm body size. Pin 1 identifier is a corner notch; leads are gull-wing shaped with 0.102 mm max coplanarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A7–A16 define page boundaries for 128-byte writes |
| I/O0–I/O7 | Bidirectional Data Bus | Byte-wide parallel interface; I/O7 used for DATA polling, I/O6 for toggle-bit status monitoring |
| CE | Chip Enable | Active-low chip select; must remain de-asserted ≥50 ns between reads to prevent data corruption |
| OE | Output Enable | Active-low output control; dual-line (CE+OE) gating prevents bus contention during shared-memory access |
| WE | Write Enable | Active-low write strobe; falling edge latches address; rising edge latches data in SDP-protected mode |
| VCC | Power Supply | 3.3 V ± 10% input; internal 5 ms power-on delay prevents spurious writes during power ramp-up |
| GND | Ground Reference | Signal and power ground reference; decoupling capacitor required within 10 mm of VCC/GND pins |
| NC / DC | No Connect / Don't Connect | Unbonded pins; must be left floating per Atmel design - no external connection permitted |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection (SDP) | Mandatory 3-byte command sequence (5555H/2AAAH/5555H) required before every write - prevents accidental overwrites during power transitions or noise events |
| Page Write Architecture | 128-byte internal latch allows burst loading of partial pages; only addressed bytes within A0–A6 are modified - avoids unnecessary wear on unaltered memory locations |
| DATA Polling & Toggle Bit | Dual asynchronous write-complete detection: I/O7 returns complemented data until done; I/O6 toggles at ~100 kHz - enables non-blocking polling without timer dependencies |
| Hardware Write Inhibit | VCC power-on delay, WE/CE noise filtering (<15 ns), and OE/CE/WE state-based inhibition eliminate need for external reset supervision circuitry |
| Green Packaging | Pb/halide-free PLCC package (32J) - complies with RoHS Directive 2011/65/EU and IPC/JEDEC J-STD-609A Class 1 moisture sensitivity |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Memory |
|---|---|
Use Scenario: Storing runtime-configurable I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via parallel bus; provides deterministic 200 ns read latency and 10 ms page write for field-upgradable settings. Use Value: Enables zero-downtime parameter updates via SDP-secured page writes while maintaining 10⁵-cycle endurance across 15+ year equipment lifecycles. |
Use Scenario: Retaining sensor calibration coefficients, usage logs, and safety-critical firmware signatures in portable diagnostic instruments operating under battery power. IC Role / Device Role / Timing Role: Low-power configuration EEPROM interfaced to ARM Cortex-M0+ MCU; leverages 20 µA standby current and DATA polling for energy-efficient write verification. Use Value: Guarantees 10-year data retention at 85°C ambient - meets IEC 62304 Class C software safety requirements for permanent calibration storage. |
| Telecom Line Card Bootloader Storage | Automotive Body Control Module NVM |
Use Scenario: Holding boot code checksums, FPGA configuration bitstreams, and vendor-specific feature keys in carrier-grade optical line cards requiring hot-swap capability. IC Role / Device Role / Timing Role: Parallel EEPROM mapped into microprocessor address space; supports JEDEC-standard pinout for drop-in compatibility with legacy 27C010 sockets. Use Value: Eliminates need for external level shifters (3.3 V native operation) and provides 200 ns read timing to meet telecom boot-time SLAs under worst-case voltage/temperature corners. |
Use Scenario: Storing seat position presets, window auto-up/down profiles, and lighting configuration in automotive BCMs exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: Industrial-temp EEPROM integrated into CAN-connected microcontroller subsystem; withstands –40°C to +85°C ambient with 10⁵ endurance for daily user adjustments. Use Value: Green (Pb/halide-free) PLCC package meets automotive ELV directive; hardware write inhibit prevents corruption during load-dump transients per ISO 7637-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar paged parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C256-15PU | 5 V operation, 150 ns access, 256 Kbit density, DIP-28 package | Lacks SDP, no toggle-bit detection, higher active current (30 mA) | Select only if legacy 5 V system integration and through-hole assembly are required; not pin-compatible with AT28LV010-20JU-319 |
| ST M28W640ECT | 3.3 V, 64 Mbit Flash, 70 ns read, TSOP-48 package, no page write | Block-erase architecture, requires erase-before-write, no DATA polling | Choose for high-density firmware storage where sequential access dominates; requires driver-level rewrite of EEPROM abstraction layer |
Compared with AT28LV010-20JU-319, AT28C256-15PU offers faster access but demands 5 V infrastructure and lacks modern write safeguards, while ST M28W640ECT provides greater density at the cost of deterministic write timing and byte-level update capability - making AT28LV010-20JU-319 optimal for applications needing reliable, low-overhead, field-upgradable configuration memory.
Availability
AT28LV010-20JU-319 is available at Aetrix Electronics and suitable for industrial PLC configuration storage, medical device calibration memory, and telecom line card bootloader storage requiring stable component supply, long-lifecycle support, and RoHS-compliant green packaging.
Supply support for AT28LV010-20JU-319 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 manufacturer specializing in microcontrollers, nonvolatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT28LV010 product line delivers low-voltage, paged parallel EEPROMs optimized for direct replacement of obsolete 5 V EPROMs and EEPROMs in space- and power-constrained embedded systems requiring guaranteed write integrity and long-term data retention.
FAQ
What is the function of the SDP command sequence for AT28LV010-20JU-319?
The SDP (Software Data Protection) command sequence for AT28LV010-20JU-319 is a mandatory three-step write operation-loading data AAH to address 5555H, 55H to 2AAAH, then A0H to 5555H-that enables internal write circuitry before any data can be programmed. This sequence prevents inadvertent writes during power-up, noise events, or software glitches. AT28LV010-20JU-319 enforces SDP at all times, unlike older EEPROMs where it could be disabled.
Does AT28LV010-20JU-319 support true byte-write operations?
No, AT28LV010-20JU-319 does not support true random byte writes. It implements page-write architecture: up to 128 bytes can be loaded into an internal latch and written simultaneously, but only bytes whose A0–A6 bits are asserted during the load phase are modified. Unaddressed bytes in the same page retain their prior values, minimizing wear. Each write cycle still requires the full SDP sequence and completes in ≤10 ms.
How is write completion detected on AT28LV010-20JU-319?
AT28LV010-20JU-319 provides two independent, hardware-supported methods: DATA polling on I/O7 (returns complement of last written byte until complete, then true data) and toggle-bit detection on I/O6 (toggles between 0 and 1 during write, stabilizes when done). Both methods operate asynchronously and require no external timing components - enabling efficient polling loops or interrupt-driven handling in AT28LV010-20JU-319-based systems.
What is the significance of the "-319" suffix in AT28LV010-20JU-319?
Per Atmel's ordering information, the "-319" suffix in AT28LV010-20JU-319 indicates shipment with Software Data Protection (SDP) permanently enabled - the standard and recommended configuration. Units ordered with "SL319" would have SDP temporarily disabled for factory programming, but AT28LV010-20JU-319 ships with SDP active by default, ensuring robust field-write protection out-of-box.
Can AT28LV010-20JU-319 be used in place of a 27C010 EPROM?
AT28LV010-20JU-319 is pin-compatible with the 27C010 EPROM in JEDEC-standard 32-pin configurations (e.g., PLCC or TSOP), sharing identical A0–A16, I/O0–I/O7, CE, OE, and WE pin assignments. However, it requires 3.3 V operation instead of 5 V, and replaces UV-erase with electrical erase/write - so while socket-compatible, AT28LV010-20JU-319 eliminates UV erasers and enables in-system reprogramming without hardware changes.
AT28LV010-20JU-319 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 200 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT28LV010-20JU-319 FAQ
1.How can I place an order for AT28LV010-20JU-319 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28LV010-20JU-319 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 AT28LV010-20JU-319 reliable?
The price and inventory of AT28LV010-20JU-319 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28LV010-20JU-319 is usually 5 days.
3.What payment methods are accepted for AT28LV010-20JU-319?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28LV010-20JU-319 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28LV010-20JU-319?
AT28LV010-20JU-319 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28LV010-20JU-319 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 AT28LV010-20JU-319?
For technical support, including AT28LV010-20JU-319 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28LV010-20JU-319 requirements.
6.How does Aetrix verify that AT28LV010-20JU-319 is sourced from the original manufacturer or authorized distributors?
All AT28LV010-20JU-319 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 AT28LV010-20JU-319 meets industry standards.
7.What is the process for return or replacement of AT28LV010-20JU-319?
All AT28LV010-20JU-319 units undergo pre-shipment inspection (PSI). If there is an issue with AT28LV010-20JU-319, 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 AT28LV010-20JU-319 part is unused and in its original packaging.
Return procedure for AT28LV010-20JU-319:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT28LV010-20JU-319 Tags
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