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Microchip Technology AT28C010E-12JU-341
- Part No.:
- AT28C010E-12JU-341
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT28C010E-12JU-341.pdf
- Description:
- IC EEPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,315
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Product details
Overview
AT28C010E-12JU-341 from Microchip Technology is a 1-Mbit (128K × 8) paged parallel EEPROM with JEDEC-standard byte-wide pinout, 120 ns read access time, and industrial temperature range (–40°C to +85°C). It supports automatic 128-byte page writes with internal latching and timer, operates from a single 5V ±10% supply, and delivers 40 mA active current and 200 µA CMOS standby current for embedded nonvolatile storage in legacy microcontroller systems.
For engineers reviewing the AT28C010E-12JU-341 datasheet, AT28C010E-12JU-341 pinout, AT28C010E-12JU-341 application, or AT28C010E-12JU-341 equivalent, key selection criteria include page write timing (≤10 ms), DATA Polling/Toggle Bit end-of-write detection, hardware/software data protection, 100,000-cycle endurance, and PLCC-32 packaging compatibility with legacy board layouts.
Technical Context
The AT28C010E-12JU-341 implements a static RAM-compatible interface with dual-line chip enable (CE) and output enable (OE) control, enabling bus contention avoidance in shared-memory systems. Its internal 128-byte page register latches address and data during write initiation, freeing the bus for concurrent operations while the device executes autonomous internal programming.
Write completion is verified via two independent 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). Hardware protection includes VCC sense (<3.8 V inhibits write), 5 ms power-on delay, and noise filtering on CE/WE inputs (rejects <15 ns pulses).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 1 Mbit (131,072 × 8 bits); supports firmware/image storage without external address multiplexing |
| Read access time | 120 ns max; enables direct replacement of SRAM or faster EPROM in 5 MHz bus systems |
| Page write cycle time | 10 ms max; reduces system wait states vs. byte-by-byte writes in configuration updates |
| Endurance | 100,000 write/erase cycles; validated for frequent field-upgrade applications |
| Data retention | 10 years at 85°C; ensures long-term reliability in unattended industrial deployments |
| Supply voltage | 5V ±10%; eliminates need for dedicated voltage regulators in 5V logic systems |
| Operating temperature | –40°C to +85°C; qualified for industrial control, automotive body electronics, and telecom infrastructure |
Pinout & Package
AT28C010E-12JU-341 is packaged in a 32-lead Plastic Leaded Chip Carrier (PLCC) with JEDEC-compliant pinout and matte tin (Sn) terminal finish. Pin 1 is designated as "Don't Connect" per datasheet DS20006331A-page 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DC (Pin 1) | Don't Connect | No electrical connection; must remain unconnected to avoid functional disruption |
| 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 | 8-bit parallel data path; I/O7 used for DATA Polling, I/O6 for Toggle Bit status reporting |
| CE | Chip Enable | Active-low global device select; required low with OE low and WE high for read access |
| OE | Output Enable | Active-low output gate; controls data bus drive to prevent contention when high |
| WE | Write Enable | Active-low write strobe; initiates byte or page write on falling edge with CE low |
| VCC | Power Supply | +5V ±10% input; powers all internal logic and memory array |
| GND | Ground Reference | Signal and power return; decoupling capacitor placement critical for noise immunity |
| NC (Pins 6,9) | No Connect | Unbonded pins; must be left floating per design specification |
Key Features
| Feature | Design Value |
|---|---|
| Automatic 128-byte page write | Reduces firmware update time by up to 128× vs. byte writes; internal latching frees address/data bus immediately after first byte |
| DATA Polling & Toggle Bit | Dual, hardware-verified write completion signals eliminate need for fixed delays or external timers in host firmware |
| Hardware write protection | VCC sense, 5 ms power-on delay, and noise filtering prevent spurious writes during brown-out or EMI events |
| Software data protection (SDP) | User-configurable lock/unlock via 3-byte command sequence; protects entire array without altering memory contents |
| 128-byte device ID area | Dedicated EEPROM space (1FF80H–1FFFFH) accessible at 12V for unique unit serialization or calibration data storage |
Applications
| Industrial PLC Firmware Storage | Legacy Automotive Body Control Module |
|---|---|
Use Scenario: Storing programmable logic controller (PLC) ladder logic and I/O configuration tables that require field updates without hardware replacement. IC Role / Device Role / Timing Role: Nonvolatile program memory interfaced directly to 8-bit microcontrollers via parallel bus; replaces battery-backed SRAM with zero maintenance. Use Value: 100,000-cycle endurance supports daily firmware revisions over 27 years; 120 ns access meets real-time scan cycle deadlines. | Use Scenario: Retaining vehicle-specific calibration parameters (e.g., window lift profiles, mirror position offsets) across ignition cycles in pre-2010 automotive ECUs. IC Role / Device Role / Timing Role: Configuration memory mapped into microcontroller address space; accessed during power-up initialization before CAN communication begins. Use Value: Industrial temperature rating ensures operation at under-hood temperatures; software data protection prevents corruption during battery jump-start transients. |
| Telecom Line Card Bootloader | Medical Diagnostic Equipment Settings |
Use Scenario: Hosting bootloader code and FPGA bitstreams for redundant line cards in carrier-grade DSLAMs requiring hot-swap capability. IC Role / Device Role / Timing Role: Parallel boot memory providing deterministic fetch latency to ARM7 or ColdFire processors; supports in-system reprogramming via JTAG debug port. Use Value: Page write mode enables full 128K image reload in ≤1.3 seconds; JEDEC pinout guarantees drop-in compatibility with existing PCB footprints. | Use Scenario: Preserving user-adjusted diagnostic thresholds (e.g., ECG gain settings, ultrasound depth calibration) between patient sessions in portable imaging devices. IC Role / Device Role / Timing Role: Parameter storage accessed only during GUI setup; requires high data integrity but minimal write frequency. Use Value: 10-year data retention at 85°C exceeds medical device shelf-life requirements; hardware VCC sensing blocks writes during low-battery conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C010-12JU | Same 1-Mbit density, 120 ns speed, and PLCC-32 package but rated for 10,000 write cycles (vs. 100,000) | Suitable for infrequently updated systems like set-top box channel maps where endurance is secondary to cost | Select when lifetime write count is <1,000 cycles and BOM cost reduction is prioritized |
| MX28F1000PC-12 | Intel-compatible 1-Mbit parallel EEPROM in 32-pin PLCC; 120 ns access but no built-in page write or DATA Polling | Requires external timing logic for write completion detection; lacks software data protection | Choose only for legacy Intel 80x86 designs requiring pin-for-pin compatibility with original MX28F1000 |
Compared with AT28C010-12JU, the AT28C010E-12JU-341 provides 10× higher endurance for field-upgradable systems, while MX28F1000PC-12 offers Intel ecosystem alignment at the cost of increased firmware complexity for write management.
Availability
AT28C010E-12JU-341 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy automotive body control modules, and telecom line card bootloader applications requiring stable component supply and long-lifecycle support.
Supply support for AT28C010E-12JU-341 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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with ISO 9001-certified manufacturing and global distribution.
The AT28C010E-12JU-341 belongs to Microchip's legacy parallel EEPROM product line, engineered for direct replacement of obsolete EPROMs and battery-backed SRAMs in industrial and automotive systems requiring proven reliability and long-term availability.
FAQ
What is the maximum page write size supported by the AT28C010E-12JU-341?
The AT28C010E-12JU-341 supports a maximum page write size of 128 bytes. This is enabled by its internal 128-byte page register, which latches address and data on the first write pulse and automatically executes the full page programming sequence. Each subsequent byte must be loaded within 150 µs of the prior one; exceeding this interval triggers immediate internal programming. The AT28C010E-12JU-341 enforces page boundaries using address lines A7–A16, ensuring all written bytes reside within the same 128-byte physical page.
How does hardware write protection function on the AT28C010E-12JU-341?
Hardware write protection on the AT28C010E-12JU-341 operates through four mechanisms: (1) VCC sense circuitry inhibits writes if supply voltage drops below ~3.8 V; (2) a 5 ms internal power-on delay timer prevents writes until VCC stabilizes; (3) write inhibition occurs if OE is low, CE is high, or WE is high; and (4) a noise filter rejects CE/WE pulses shorter than ~15 ns. These features collectively prevent accidental writes during power transitions, ESD events, or signal glitches-critical for maintaining data integrity in the AT28C010E-12JU-341's target applications.
Can the AT28C010E-12JU-341 be used as a direct replacement for the AT28C010-12JU in existing designs?
Yes, the AT28C010E-12JU-341 is a pin-and-function compatible upgrade to the AT28C010-12JU, sharing identical PLCC-32 packaging, JEDEC pinout, 120 ns access time, and operating voltage. The primary enhancement is extended endurance (100,000 vs. 10,000 write cycles), with no changes required to PCB layout, firmware timing, or interface logic. All existing AT28C010-12JU read/write sequences, DATA Polling, and software data protection commands function identically in the AT28C010E-12JU-341, making it a seamless drop-in reliability upgrade.
What is the purpose of the 128-byte device identification area in the AT28C010E-12JU-341?
The AT28C010E-12JU-341 includes a dedicated 128-byte device identification area located at addresses 1FF80H–1FFFFH. This region is electrically isolated from main memory and accessed by raising A9 to 12V ±0.5V during write/read operations. It enables permanent unit-level serialization, factory calibration data storage, or firmware version tagging without consuming main array capacity. Because this area uses the same EEPROM technology as the main array, it inherits the AT28C010E-12JU-341's 100,000-cycle endurance and 10-year data retention, supporting traceability requirements in regulated industries.
Does the AT28C010E-12JU-341 support chip erase functionality?
Yes, the AT28C010E-12JU-341 supports optional software-controlled chip erase using a 6-byte command sequence, documented in Microchip's Software Chip Erase application note. This feature allows complete memory array erasure without UV exposure or specialized equipment. Unlike page or byte writes, chip erase requires elevated voltage (12.0V ±0.5V on A9) and specific timing (minimum 10 ms pulse width). The AT28C010E-12JU-341's hardware protection remains active during chip erase, ensuring the command sequence is validated before execution to prevent accidental bulk erasure.
AT28C010E-12JU-341 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:
- 120 ns
- Voltage - Supply:
- 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)
AT28C010E-12JU-341 FAQ
1.How can I place an order for AT28C010E-12JU-341 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C010E-12JU-341 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 AT28C010E-12JU-341 reliable?
The price and inventory of AT28C010E-12JU-341 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C010E-12JU-341 is usually 5 days.
3.What payment methods are accepted for AT28C010E-12JU-341?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C010E-12JU-341 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C010E-12JU-341?
AT28C010E-12JU-341 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C010E-12JU-341 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 AT28C010E-12JU-341?
For technical support, including AT28C010E-12JU-341 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C010E-12JU-341 requirements.
6.How does Aetrix verify that AT28C010E-12JU-341 is sourced from the original manufacturer or authorized distributors?
All AT28C010E-12JU-341 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 AT28C010E-12JU-341 meets industry standards.
7.What is the process for return or replacement of AT28C010E-12JU-341?
All AT28C010E-12JU-341 units undergo pre-shipment inspection (PSI). If there is an issue with AT28C010E-12JU-341, 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 AT28C010E-12JU-341 part is unused and in its original packaging.
Return procedure for AT28C010E-12JU-341:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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