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Microchip Technology AT29C1024-15JC
- Part No.:
- AT29C1024-15JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
AT29C1024-15JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,381
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Product details
Overview
AT29C1024-15JC from Atmel is a 5-V-only, 1 Mbit (64K × 16) Flash memory IC designed for in-system reprogrammability in embedded controllers and firmware storage applications. It delivers 150 ns read access time, supports sector-based programming with 512 sectors (128 words/sector), and operates across commercial temperature range (0°C to 70°C) in a 44-lead PLCC package.
For engineers reviewing the AT29C1024-15JC datasheet, AT29C1024-15JC pinout, AT29C1024-15JC application, or AT29C1024-15JC equivalent, this page provides verified technical context, real-world use cases, validated alternatives, and supply-ready procurement details - all grounded in Atmel's official Rev. 0571A–10/98 specification.
Technical Context
The AT29C1024-15JC implements a sector-erase-and-program architecture with internal latching of 128-word sectors, enabling bus-free background loading during reprogramming. Its dual-line chip enable (CE) and output enable (OE) control allows flexible bus contention management during mixed read/write operations.
Hardware data protection includes VCC sense (<3.8 V inhibits programming), 5 ms power-on delay, and noise filtering (<15 ns pulses rejected). Software data protection uses a three-command sequence (5555H/2AAAH/A0A0H) to enable/disable write lock, persisting across power cycles without reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (65,536 × 16-bit words) - supports firmware images up to 128 KB in 16-bit wide systems. |
| Read Access Time | 150 ns - meets timing for 6.67 MHz bus operation with margin in 8051 or Z80-based designs. |
| Sector Size | 128 words (256 bytes) - enables granular firmware updates without full-chip erase. |
| Program Cycle Time | 10 ms per sector - enables field-upgradable boot code with predictable latency. |
| Supply Voltage | 5 V ± 10% - compatible with legacy 5 V logic rails without level-shifting. |
| Standby Current | 200 µA CMOS - suitable for low-power modes in battery-backed industrial controllers. |
| Endurance | >10,000 program/erase cycles per sector - supports >10 years of daily firmware patching at one sector/day. |
Pinout & Package
AT29C1024-15JC is housed in a 44-lead Plastic Leaded Chip Carrier (PLCC) package, pin-compatible with JEDEC MS-018 AA standard. The package supports socketed prototyping and rework-friendly surface-mount assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; A7–A15 select sector, A0–A6 select word within sector. |
| I/O0–I/O15 | Bidirectional Data Bus | 16-bit parallel data path; supports DATA polling on I/O7/I/O15 and toggle bit detection on I/O6/I/O14. |
| CE | Chip Enable | Active-low device select; must be low for read, program, or identification modes. |
| OE | Output Enable | Active-low output control; high-Z state prevents bus contention when disabled. |
| WE | Write Enable | Active-low control for data loading and sector programming initiation. |
| VCC, VSS | Power Supply | Single 5 V supply with two ground pins (pins 22 and 37) for noise reduction. |
| NC | No Connect | Pins 1, 8, 16, 25, 26, 30, 31, 40, 41, 43 - must remain unconnected per design. |
Key Features
| Feature | Design Value |
|---|---|
| 5-V-only sector programming | Eliminates need for +12 V programming voltage, simplifying power design and enabling direct microcontroller interfacing. |
| Internal address/data latches (128 words) | Allows full sector data load before programming begins, freeing address/data bus for concurrent system tasks. |
| DATA polling & toggle bit detection | Enables software-driven end-of-program detection without external timers or status registers. |
| Dual hardware/software data protection | Prevents accidental writes during power-up, noise events, or firmware bugs via VCC sensing and command-sequence lock. |
| Software product identification mode | Permits runtime part verification (Manufacturer Code 1Fh, Device Code 25h) for multi-density board compatibility. |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded Controller Boot Memory |
|---|---|
Use Scenario: Storing firmware for programmable logic controllers operating in factory-floor environments with 0°C to 70°C ambient. IC Role / Device Role / Timing Role: Nonvolatile boot ROM providing 16-bit instruction fetch with 150 ns access to meet scan-cycle timing budgets. Use Value: Sector erase enables field updates of motion-control algorithms without replacing hardware or halting production lines. |
Use Scenario: Boot memory for 8051- or Z80-based medical analyzers requiring certified, long-lifecycle firmware storage. IC Role / Device Role / Timing Role: 5 V-compatible Flash replacing EPROMs; eliminates UV-erasure and socket wear in service-replaceable modules. Use Value: 10,000-cycle endurance ensures >15 years of calibration data logging and firmware patches under ISO 13485 requirements. |
| Telecom Line Card Configuration | Automotive Diagnostic Tool Memory |
Use Scenario: Storing configuration profiles and protocol stacks on T1/E1 line cards deployed in central office cabinets. IC Role / Device Role / Timing Role: In-system reprogrammable memory supporting hot-swap firmware upgrades without card removal. Use Value: Hardware data protection prevents corruption during power cycling during maintenance windows. |
Use Scenario: Firmware storage in handheld OBD-II diagnostic tools used across vehicle models and ECU variants. IC Role / Device Role / Timing Role: Field-upgradable memory holding J1939/ISO 15765 stack binaries and vehicle-specific calibration tables. Use Value: Software product ID (1Fh/25h) allows tool firmware to auto-select correct sector size and timing parameters per density variant. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV160DB-90EC | 3 V core (5 V tolerant I/O), 16 Mbit density, 90 ns access, no sector latch - requires external buffering for 16-bit bus. | Targets newer 3.3 V systems; lacks 5 V-native operation and internal 128-word latching. | Select only if migrating to lower-voltage platforms and redesigning power delivery and timing control. |
| MX29LV160CBTI-90G | 3 V supply, 16 Mbit, 90 ns, CFI-compliant command set - no software product ID mode or hardware VCC sense. | Designed for PC BIOS and embedded Linux boot; incompatible with AT29C1024-15JC's 5 V-only command protocol. | Choose only for new designs requiring JEDEC-standard CFI interfaces and higher density, not for drop-in replacement. |
Compared with AM29LV160DB-90EC and MX29LV160CBTI-90G, the AT29C1024-15JC uniquely supports true 5 V-only operation, internal sector latching, and dual hardware/software write protection - making it irreplaceable in legacy 5 V industrial controllers where voltage rail and firmware update architecture are fixed.
Availability
AT29C1024-15JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy embedded controller boot memory, and telecom line card configuration requiring stable component supply across extended product lifecycles.
Supply support for AT29C1024-15JC 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 fabless semiconductor company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs for industrial and automotive markets.
The AT29C1024-15JC belongs to Atmel's early-generation 5 V Flash memory product line, engineered specifically for seamless EPROM replacement and in-system firmware updates in cost-sensitive, long-lifecycle embedded systems.
FAQ
What is the maximum operating temperature range for the AT29C1024-15JC?
The AT29C1024-15JC is rated for commercial temperature operation from 0°C to 70°C. Its ordering code suffix "JC" explicitly denotes the 44-lead PLCC package in the commercial grade. Industrial-grade variants (e.g., AT29C1024-15JI) support –40°C to +85°C, but the AT29C1024-15JC itself is not qualified beyond 70°C ambient.
Does the AT29C1024-15JC require external high-voltage circuitry for programming?
No. The AT29C1024-15JC uses 5-V-only programming - all commands (sector erase, word load, software protection) execute using standard 5 V logic levels. No external +12 V or charge-pump circuitry is needed, unlike older EPROMs or some early Flash devices. This simplifies PCB layout and reduces BOM count for the AT29C1024-15JC implementation.
How does software data protection work on the AT29C1024-15JC?
Software data protection on the AT29C1024-15JC is enabled by writing three specific values (AAh to 5555h, 55h to 2AAAh, A0h to 5555h) in sequence. Once activated, every subsequent sector program cycle must begin with that same three-command sequence. The AT29C1024-15JC retains this protected state across power cycles until explicitly disabled using the corresponding unlock sequence.
Can the AT29C1024-15JC be used as a direct replacement for standard EPROMs like the 27C1024?
Yes - the AT29C1024-15JC is pin- and function-compatible with the 27C1024 EPROM in read mode (CE/OE/WE timing matches), but adds in-system reprogrammability. Unlike the 27C1024, the AT29C1024-15JC requires no UV erasure or external programmer for updates, and its WE pin replaces the 27C1024's OE* for write control. Full compatibility requires verifying OE/WE timing margins in the target system.
What packaging format is used for the AT29C1024-15JC?
The AT29C1024-15JC is supplied in a 44-lead Plastic Leaded Chip Carrier (PLCC) package, designated "44J" in Atmel's ordering information. It follows JEDEC MS-018 AA mechanical standard, features J-shaped leads, and is socket-compatible with standard 44-pin PLCC sockets used in development and field-replaceable modules.
AT29C1024-15JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 1Mbit
- Memory Organization:
- 64K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 150 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.6x16.6)
AT29C1024-15JC FAQ
1.How can I place an order for AT29C1024-15JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C1024-15JC 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 AT29C1024-15JC reliable?
The price and inventory of AT29C1024-15JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C1024-15JC is usually 5 days.
3.What payment methods are accepted for AT29C1024-15JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C1024-15JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C1024-15JC?
AT29C1024-15JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C1024-15JC 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 AT29C1024-15JC?
For technical support, including AT29C1024-15JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C1024-15JC requirements.
6.How does Aetrix verify that AT29C1024-15JC is sourced from the original manufacturer or authorized distributors?
All AT29C1024-15JC 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 AT29C1024-15JC meets industry standards.
7.What is the process for return or replacement of AT29C1024-15JC?
All AT29C1024-15JC units undergo pre-shipment inspection (PSI). If there is an issue with AT29C1024-15JC, 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 AT29C1024-15JC part is unused and in its original packaging.
Return procedure for AT29C1024-15JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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