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Microchip Technology AT28C010-15JU
- Part No.:
- AT28C010-15JU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT28C010-15JU.pdf
- Description:
- IC EEPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,684
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Product details
Overview
AT28C010-15JU from Microchip Technology is a 1-Mbit (128K × 8) paged parallel EEPROM with 150 ns read access time, JEDEC-standard byte-wide pinout, and industrial temperature range (–40°C to +85°C). It operates from a single 5V ±10% supply, supports hardware/software data protection, and delivers up to 100,000 write cycles with 10-year data retention - used in firmware storage, configuration memory, and boot code retention for embedded controllers.
For engineers reviewing the AT28C010-15JU datasheet, AT28C010-15JU pinout, AT28C010-15JU application, or AT28C010-15JU equivalent, key selection considerations include page-write timing (≤10 ms), DATA polling/Toggle Bit end-of-write detection, CMOS/TTL compatibility, and PLCC-32 packaging with no-connect pin handling.
Technical Context
The AT28C010-15JU implements a paged architecture with a 128-byte internal latching register, enabling simultaneous write of 1–128 bytes per cycle without external address/data bus hold. Its dual-line control (CE/OE) enables flexible bus contention management during read operations, while WE-controlled or CE-controlled write initiation supports both byte and page modes.
Internal VCC sensing (write inhibit below 3.8 V), 5 ms power-on delay, noise filtering (<15 ns pulse rejection), and software data protection (3-byte command sequence) collectively ensure robust immunity against inadvertent writes during power transitions or noise events - critical for field-deployed industrial systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - supports full firmware image or multi-parameter configuration storage |
| Read access time | 150 ns max - compatible with 6–7 MHz bus timing in legacy microcontroller systems |
| Page write time | 10 ms max - enables efficient bulk updates without CPU polling overhead |
| Write endurance | 100,000 cycles (E-grade) - validated for frequent field-upgrade scenarios |
| Data retention | 10 years at +85°C - meets long-life industrial equipment requirements |
| Supply voltage | 5V ±10% - interoperable with standard TTL/CMOS logic rails without level shifting |
| Operating temperature | –40°C to +85°C - qualified for industrial ambient environments |
| Standby current | 200 µA (CMOS mode) - minimizes quiescent power in always-on systems |
Pinout & Package
AT28C010-15JU is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package with JEDEC-standard byte-wide pinout. Pin 1 is a no-connect (NC); A16–A0, I/O7–I/O0, CE, OE, WE, VCC, and GND are fully defined per datasheet DS20006331A.
| 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 page writes |
| I/O0–I/O7 | Bidirectional data bus | 8-bit parallel interface; I/O7 provides DATA Polling feedback; I/O6 provides Toggle Bit status |
| CE | Chip Enable | Active-low chip select; must be low for read/write; high-Z output when deasserted |
| OE | Output Enable | Active-low output gate; controls data bus drive; high-Z when high |
| WE | Write Enable | Active-low write strobe; initiates byte or page write on falling edge |
| VCC | Power supply | +5V ±10% main supply; includes internal VCC sense for write inhibition below 3.8 V |
| GND | Ground reference | Signal and power return path; decoupling required per JEDEC layout guidelines |
| NC (Pin 1) | No connect | Unbonded pin; must remain unconnected per Microchip specification |
Key Features
| Feature | Design Value |
|---|---|
| 128-byte page write register | Reduces host CPU overhead by allowing burst loading of up to 128 bytes before internal programming begins |
| DATA Polling (I/O7) | Enables real-time write completion detection without fixed delays or external timers |
| Toggle Bit (I/O6) | Provides alternative asynchronous write-status monitoring via bit-flip behavior during programming |
| 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) | 3-byte command sequence (AA/55/A0) enables user-configurable lock/unlock of entire memory array |
| 128-byte device ID area | Dedicated EEPROM region (1FF80H–1FFFFH) accessible via 12V A9 for serialization or calibration data storage |
Applications
| Industrial PLC Configuration Storage | Legacy Embedded Boot Memory |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and calibration coefficients in programmable logic controllers subject to frequent reconfiguration and extended field life. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via parallel bus during startup and runtime parameter updates. Use Value: 100,000 write cycles and 10-year data retention ensure reliability across 15+ year product lifecycles without field replacement. | Use Scenario: Holding boot firmware and hardware initialization code for 8/16-bit microcontrollers in medical devices and test equipment where flash replacement is impractical. IC Role / Device Role / Timing Role: Parallel-boot ROM replacement with SRAM-like read interface and deterministic 150 ns access timing. Use Value: JEDEC-standard pinout and TTL/CMOS compatibility enable drop-in replacement of obsolete EPROMs without PCB redesign. |
| Telecom Line Card Parameter Storage | Automated Test Equipment (ATE) Setup Memory |
Use Scenario: Retaining channel-specific gain settings, filter coefficients, and fault history logs in carrier-grade line cards operating in temperature-controlled cabinets. IC Role / Device Role / Timing Role: High-reliability nonvolatile memory interfaced to FPGA or ASIC control logic via dedicated parallel bus. Use Value: Industrial temperature rating (–40°C to +85°C) and low 200 µA standby current support continuous operation with minimal thermal impact. | Use Scenario: Storing test profiles, fixture compensation data, and calibration offsets in rack-mounted ATE systems requiring rapid setup recall between production lots. IC Role / Device Role / Timing Role: Fast-access configuration memory enabling sub-second test initialization via parallel load. Use Value: 128-byte page write capability cuts profile update time by >90% versus byte-by-byte programming, accelerating changeover. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C010-15TU | Identical electrical specs and pinout; packaged in 32-lead TSOP instead of PLCC | Preferred for space-constrained PCBs with surface-mount assembly; lacks PLCC's socket compatibility | Select when board area is limited and reworkability is less critical than footprint density |
| AT28C256-15JU | 256 K × 8 (2 Mbit), same 150 ns speed, PLCC-32, but requires A17 address line and different page size (64 bytes) | Supports larger firmware images; not pin-compatible due to A17 requirement and altered pin mapping (e.g., NC vs. A17) | Choose only if memory capacity expansion is required and PCB layout allows A17 routing and signal integrity validation |
Compared with AT28C010-15TU, the AT28C010-15JU offers socket-based field upgradeability and thermal cycling resilience; compared with AT28C256-15JU, it provides guaranteed pin compatibility and simpler address decoding for legacy 1-Mbit designs - making it optimal for maintenance of existing industrial platforms.
Availability
AT28C010-15JU is available at Aetrix Electronics and suitable for industrial PLCs, legacy embedded boot systems, telecom line cards, and automated test equipment requiring stable component supply, long-term lifecycle support, and green (Pb/Halide-free) packaging compliance.
Supply support for AT28C010-15JU 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 global provider of microcontrollers, analog components, and memory solutions, with a focus on embedded control and connectivity.
The AT28C010 belongs to Microchip's parallel EEPROM product line, designed specifically for reliable, pin-compatible replacement of UV-erasable EPROMs and early flash memory in industrial and telecom infrastructure where deterministic timing and long-term data integrity are mandatory.
FAQ
What is the maximum page write time for AT28C010-15JU?
The AT28C010-15JU has a maximum page write cycle time of 10 ms, as specified in the AC characteristics table (tWC). This applies to all 1–128 byte writes within a single page. The internal control timer manages the full programming sequence autonomously after the last byte is latched, freeing the host bus for other tasks during the 10 ms window. AT28C010-15JU does not require external timing components to meet this spec.
Does AT28C010-15JU support both hardware and software write protection?
Yes, AT28C010-15JU integrates dual-layer write protection: hardware features include VCC sensing (inhibits writes below ~3.8 V), 5 ms power-on delay, and noise filtering on WE/CE inputs; software protection uses a 3-byte command sequence (AA/55/A0 to addresses 5555H/2AAAH/5555H) to enable/disable full-array locking. Both mechanisms operate independently and are active simultaneously in AT28C010-15JU.
What is the function of Pin 1 on AT28C010-15JU?
Pin 1 on AT28C010-15JU is designated "Don't Connect" (DC) per Microchip's datasheet DS20006331A. It is an unbonded, no-connect terminal and must remain unconnected in the PCB layout. Routing or soldering to Pin 1 may cause functional instability or violate JEDEC-compliant operation. All valid signals for AT28C010-15JU are assigned to Pins 2–32 as defined in Table 2-1.
Can AT28C010-15JU be used as a direct replacement for older EPROMs like 27C010?
AT28C010-15JU is electrically and pinout-compatible with 27C010 EPROMs in read mode (same VCC, address/data bus, CE/OE/WE logic levels), but differs in write methodology: it requires no UV erasure and supports in-system page writes. While it fits the same PLCC-32 socket, AT28C010-15JU eliminates UV erasers and programmers - making it a functional, drop-in upgrade for 27C010-based designs where firmware updates are needed post-deployment.
How is end-of-write detection implemented in AT28C010-15JU?
AT28C010-15JU provides two independent, hardware-verified methods: DATA Polling monitors I/O7, which outputs the complement of the last written byte until programming completes; Toggle Bit monitors I/O6, which toggles logic states during active programming and stabilizes upon completion. Both methods allow the host to poll asynchronously without fixed delays - a core design feature confirmed in Sections 5.14 and 5.16 of the AT28C010-15JU datasheet.
AT28C010-15JU 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:
- 150 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)
AT28C010-15JU FAQ
1.How can I place an order for AT28C010-15JU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C010-15JU 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 AT28C010-15JU reliable?
The price and inventory of AT28C010-15JU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C010-15JU is usually 5 days.
3.What payment methods are accepted for AT28C010-15JU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C010-15JU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C010-15JU?
AT28C010-15JU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C010-15JU 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 AT28C010-15JU?
For technical support, including AT28C010-15JU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C010-15JU requirements.
6.How does Aetrix verify that AT28C010-15JU is sourced from the original manufacturer or authorized distributors?
All AT28C010-15JU 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 AT28C010-15JU meets industry standards.
7.What is the process for return or replacement of AT28C010-15JU?
All AT28C010-15JU units undergo pre-shipment inspection (PSI). If there is an issue with AT28C010-15JU, 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 AT28C010-15JU part is unused and in its original packaging.
Return procedure for AT28C010-15JU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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