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Microchip Technology AT28C010E-12PI
- Part No.:
- AT28C010E-12PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT28C010E-12PI.pdf
- Description:
- IC EEPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,172
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Product details
Overview
AT28C010E-12PI from Microchip Technology (formerly Atmel) 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 1–128-byte page writes with 10 ms max cycle time, hardware/software data protection, and DATA polling for write completion detection - used in firmware storage, configuration memory, and boot code retention in embedded controllers.
For engineers reviewing the AT28C010E-12PI datasheet, AT28C010E-12PI pinout, AT28C010E-12PI application, or AT28C010E-12PI equivalent, key selection considerations include its 5V ±10% single-supply operation, CMOS/TTL-compatible I/O, 100K-cycle endurance, 10-year data retention, and PDIP-32 industrial-grade packaging.
Technical Context
The AT28C010E-12PI implements a static RAM-like interface with dual-line chip enable (CE) and output enable (OE) control, enabling bus contention avoidance in microcontroller systems. Its internal 128-byte page register latches address and data during write initiation, freeing the bus for concurrent operations while an internal timer executes programming.
Write completion is verified via DATA polling on I/O7 (complement-to-data during write, true data after completion) or toggle-bit behavior on I/O6. Hardware protection includes VCC sense (<3.8 V inhibits write), 5 ms power-on delay, noise filtering (<15 ns pulses ignored), and CE/OE/WE state-based inhibition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - supports full 16-bit address space with A0–A16 addressing. |
| Read Access Time | 120 ns maximum - enables direct replacement of SRAM in legacy 8051, Z80, and 68K-based systems without wait-state insertion. |
| Page Write Cycle | 10 ms maximum for 1–128 bytes - reduces firmware update latency vs. byte-by-byte writes; requires A7–A16 stable per page. |
| Endurance | 100,000 write/erase cycles (E-suffix variant) - suitable for field-upgradable configuration storage with frequent reprogramming. |
| Data Retention | 10 years at +85°C - ensures long-term reliability in industrial control panels and telecom line cards without refresh. |
| Supply Voltage | 5V ±10% - compatible with standard TTL/CMOS logic rails; no external voltage regulation required. |
| Standby Current | 200 µA (CMOS mode) - enables low-power hold states in battery-backed or energy-constrained applications. |
Pinout & Package
AT28C010E-12PI is packaged in a 32-lead plastic dual inline package (PDIP-32), 0.600" wide, with JEDEC MS-011 compliant footprint and through-hole mounting. Pin 1 is index-marked; pins 17 and 32 are GND and VCC respectively.
| 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. |
| CE | Chip Enable | Active-low device select; must be low with OE low and WE high for read; high or floating disables outputs (high-Z). |
| OE | Output Enable | Active-low output gate; controls data bus drive; used with CE for flexible bus arbitration and contention prevention. |
| WE | Write Enable | Active-low write strobe; falling edge latches address/data; initiates byte or page write when CE is low and OE is high. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit multiplexed data path; presents complement of last written byte on I/O7 during write for polling; toggles on I/O6. |
| GND / VCC | Power Terminals | Pins 17 (GND) and 32 (VCC); decoupling capacitor (0.1 µF) required within 1 cm of VCC/GND for stable 120 ns read timing. |
| NC | No Connect | Pins 1, 31: internally unconnected; must remain unconnected on PCB to avoid parasitic coupling or latch-up risk. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Page Write | Reduces firmware update time by up to 128× vs. byte writes; internal latching frees address/data bus during 10 ms internal programming. |
| DATA Polling & Toggle Bit | Enables real-time write status monitoring without timers or interrupts - I/O7 returns complement until complete; I/O6 toggles during write. |
| Hardware Write Protection | VCC sense + 5 ms power-on delay prevents spurious writes during brown-out or power ramp; noise filter rejects <15 ns glitches on WE/CE. |
| Software Data Protection (SDP) | User-enabled 3-byte command sequence (AAh/55h/A0h) blocks unintended writes; remains active across power cycles until explicitly disabled. |
| Industrial Temperature Range | –40°C to +85°C operation validated per JEDEC JESD22-A108; supports deployment in motor drives, PLCs, and outdoor base stations. |
Applications
| Industrial PLC Configuration Storage | Legacy System Boot Code Retention |
|---|---|
|
Use Scenario: Storing ladder logic parameters, I/O mapping, and calibration coefficients in programmable logic controllers subject to frequent field updates and thermal cycling. IC Role / Device Role / Timing Role: Nonvolatile configuration memory interfaced directly to 8-bit microcontrollers (e.g., 8051 derivatives) using standard address/data bus. Use Value: 100K-cycle endurance and 10-year data retention ensure >10 years of unattended operation in factory automation environments. |
Use Scenario: Holding boot firmware for legacy x86, 68K, or Z80-based instrumentation where BIOS or monitor code must survive power loss. IC Role / Device Role / Timing Role: Drop-in SRAM replacement with identical JEDEC pinout and 120 ns access - no PCB redesign required. Use Value: Eliminates battery backup circuitry while maintaining compatibility with existing memory controllers and timing budgets. |
| Telecom Line Card Parameter Tables | Medical Device Calibration Memory |
|
Use Scenario: Storing channel gain settings, filter coefficients, and fault logs in DSLAMs and optical line terminals operating continuously at elevated ambient temperatures. IC Role / Device Role / Timing Role: High-reliability parameter store accessed via dedicated microcontroller bus; write-protected during normal operation. Use Value: Industrial-grade temperature rating and hardware/software write protection prevent corruption during hot-swap events or ESD transients. |
Use Scenario: Retaining sensor calibration constants and usage history in portable diagnostic equipment requiring FDA-compliant data integrity. IC Role / Device Role / Timing Role: Secure nonvolatile memory with SDP enabled at manufacturing; protected against accidental overwrite during service mode. Use Value: Traceable 128-byte device ID area (1FF80H–1FFFFH) supports UDI/UDI-DI compliance for medical device serialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar paged parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C010-12PI | 10K-cycle endurance, same pinout/package, identical AC/DC specs except endurance and standby current (200 µA vs. 3 mA TTL mode) | Suitable for low-update-frequency applications (e.g., one-time firmware load); lower cost but shorter field life under frequent writes | Select when write cycles are infrequent and total lifetime updates < 10K; verify system-level endurance margin. |
| MN63C010-12PI | Same 120 ns access, 100K-cycle endurance, but requires 12V VPP for chip erase; no software data protection or device ID area | Lacks SDP and toggle-bit polling; relies on external 12V supply for bulk erase - increases BOM and layout complexity | Choose only if legacy design already uses MN63C010; not recommended for new designs due to missing protection features. |
Compared with AT28C010-12PI and MN63C010-12PI, the AT28C010E-12PI uniquely combines 100K-cycle endurance, zero-voltage-programming, integrated software/hardware protection, and a dedicated 128-byte ID area - making it optimal for field-upgradable, safety-critical, or high-reliability embedded systems.
Availability
AT28C010E-12PI is available at Aetrix Electronics and suitable for industrial control, legacy system modernization, and medical device calibration storage requiring stable component supply across extended product lifecycles.
Supply support for AT28C010E-12PI 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 acquired Atmel in 2016 and maintains full support for the AT28C010E family. Atmel pioneered high-endurance parallel EEPROMs for industrial and automotive applications before the acquisition.
The AT28C010E series was designed specifically for drop-in SRAM replacement in legacy 8-bit and 16-bit microcontroller systems requiring nonvolatile, field-upgradable memory with robust write protection and long data retention.
FAQ
What is the endurance rating of the AT28C010E-12PI?
The AT28C010E-12PI is rated for 100,000 write/erase cycles - confirmed by Atmel's characterization and specified in the "Features" section of the official datasheet. This high endurance is enabled by the "E" suffix variant's enhanced CMOS process and internal error correction, distinguishing it from the standard AT28C010-12PI (10K cycles). The AT28C010E-12PI maintains this rating across its full industrial temperature range (–40°C to +85°C).
Does the AT28C010E-12PI require a 12V programming voltage?
No, the AT28C010E-12PI operates from a single 5V ±10% supply for both read and write operations - including page writes and software chip erase. Unlike older EEPROM families, it does not require VPP = 12V. The 12V specification applies only to the optional device identification area (1FF80H–1FFFFH), which is separate from main array programming and unused in standard operation of the AT28C010E-12PI.
How is write completion detected on the AT28C010E-12PI?
Write completion on the AT28C010E-12PI is detected using either DATA polling on I/O7 (returns complement of last written byte until complete, then true data) or the toggle-bit method on I/O6 (toggles between 0 and 1 during write, stabilizes afterward). Both methods are supported simultaneously and can be initiated at any time during the write cycle - no external timer or fixed delay is needed for reliable detection of AT28C010E-12PI write completion.
Is the AT28C010E-12PI pin-compatible with standard SRAM devices?
Yes, the AT28C010E-12PI uses a JEDEC-approved byte-wide pinout identical to common 128K × 8 SRAMs (e.g., IS61LV12816), enabling direct socket replacement in existing designs. Its CE/OE/WE control scheme matches standard SRAM timing, and the 120 ns access time meets or exceeds typical SRAM performance - allowing the AT28C010E-12PI to function as nonvolatile SRAM without hardware modification.
What protection mechanisms prevent accidental writes to the AT28C010E-12PI?
The AT28C010E-12PI implements dual-layer protection: hardware features (VCC sense below 3.8 V, 5 ms power-on delay, noise filtering for <15 ns pulses, and CE/OE/WE state locking) and software data protection (SDP) enabled via a 3-byte command sequence (AAh/55h/A0h). Once SDP is activated, all writes to the AT28C010E-12PI require reissuing that sequence - preventing corruption during power transitions or firmware bugs.
AT28C010E-12PI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT28C010E-12PI FAQ
1.How can I place an order for AT28C010E-12PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C010E-12PI 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-12PI reliable?
The price and inventory of AT28C010E-12PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C010E-12PI is usually 5 days.
3.What payment methods are accepted for AT28C010E-12PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C010E-12PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C010E-12PI?
AT28C010E-12PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C010E-12PI 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-12PI?
For technical support, including AT28C010E-12PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C010E-12PI requirements.
6.How does Aetrix verify that AT28C010E-12PI is sourced from the original manufacturer or authorized distributors?
All AT28C010E-12PI 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-12PI meets industry standards.
7.What is the process for return or replacement of AT28C010E-12PI?
All AT28C010E-12PI units undergo pre-shipment inspection (PSI). If there is an issue with AT28C010E-12PI, 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-12PI part is unused and in its original packaging.
Return procedure for AT28C010E-12PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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