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Microchip Technology AT29C1024-70JC
- Part No.:
- AT29C1024-70JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
AT29C1024-70JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,472
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Product details
Overview
AT29C1024-70JC 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 70 ns read access time, supports sector-based programming with 512 sectors (128 words/sector), and features hardware/software data protection. Its PLCC-44 package operates across commercial temperature range (0°C to 70°C).
For engineers reviewing the AT29C1024-70JC datasheet, AT29C1024-70JC pinout, AT29C1024-70JC application, or AT29C1024-70JC equivalent, key selection criteria include 70 ns read timing, 5 V ± 5% supply compliance, sector erase architecture, CMOS/TTL I/O compatibility, and PLCC-44 mechanical fit for legacy board designs.
Technical Context
The AT29C1024-70JC implements a sector-program Flash architecture where each of 512 sectors holds 128 words (256 bytes); programming requires loading all 128 words before internal auto-erase-and-write execution. Address latching occurs on falling CE or WE edges, with A7–A15 selecting the sector and A0–A6 selecting the word within it.
It integrates dual data protection: hardware-level VCC sense (inhibit below 3.8 V), 5 ms power-on delay, and noise filtering (<15 ns pulse rejection), plus software protection enabled via three-word command sequence (5555H/2AAAH/A0A0H). End-of-program detection uses DATA polling on I/O7/I/O15 or TOGGLE bit on I/O6/I/O14.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (64K × 16 words), enabling firmware storage for mid-complexity microcontrollers |
| Read Access Time | 70 ns - meets timing requirements for 14 MHz bus interfaces without wait states |
| Supply Voltage | 5 V ± 5% - compatible with standard TTL/CMOS logic rails; no auxiliary voltage required |
| Active Current | 60 mA - supports sustained read operations in real-time control loops |
| Standby Current | 200 µA CMOS - enables low-power sleep modes in battery-backed systems |
| Endurance | >10,000 program/erase cycles per sector - suitable for field-upgradable firmware with infrequent updates |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade industrial control panels and office equipment |
Pinout & Package
AT29C1024-70JC is housed in a 44-lead Plastic J-Leaded Chip Carrier (PLCC-44) package with gull-wing leads, JEDEC MS-018 AA compliant, footprint size 16.7 mm × 16.7 mm, suitable for through-hole or surface-mount reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus; A0–A6 select word within sector, A7–A15 select sector (512 total) |
| I/O0–I/O15 | Bidirectional Data Bus | 16-bit parallel interface; supports DATA polling on I/O7/I/O15 and TOGGLE on I/O6/I/O14 |
| CE | Chip Enable | Active-low chip select; must be low for read, program, or identification mode |
| OE | Output Enable | Active-low output control; high-Z when high, enables bus sharing with other peripherals |
| WE | Write Enable | Active-low write strobe; controls data load timing and initiates sector programming |
| VCC | Power Supply | +5 V ± 5% main supply; powers core logic and I/O buffers |
| VSS | Ground | Two dedicated ground pins (pins 13 and 30 in PLCC) reduce noise coupling |
| NC / DC | No Connect / Don't Connect | Unbonded pins (e.g., pins 1, 8, 25, 31, 32, 40, 43, 44); must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle sector erase + program | Eliminates external high-voltage circuitry; full 128-word sector rewritten in one 10 ms internal cycle |
| Hardware data protection | VCC sense, 5 ms power-on delay, and noise filtering prevent spurious writes during brown-out or EMI events |
| Software data protection | User-configurable lock via 3-word command sequence (5555H/2AAAH/A0A0H); persists across power cycles |
| DATA polling & TOGGLE bit | Real-time end-of-program detection without timers or external interrupts - reduces firmware overhead |
| CMOS/TTL I/O compatibility | Direct interfacing with both 5 V CMOS and legacy TTL microcontrollers without level shifters |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing firmware images and calibration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with 70 ns read access supporting deterministic scan-cycle execution. Use Value: Sector-level reprogramming allows field updates without removing the module; 10,000-cycle endurance ensures multi-year service life. |
Use Scenario: Holding device-specific configuration parameters and safety-critical boot code in diagnostic imaging equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory with hardware/software write protection preventing unauthorized parameter changes. Use Value: VCC-sense and noise filtering guarantee immunity to power transients common in hospital-grade AC supplies. |
| Point-of-Sale Terminal Boot ROM | Telecom Line Card Parameter Storage |
Use Scenario: Hosting boot loader and application firmware in retail terminals requiring fast startup and reliable update capability. IC Role / Device Role / Timing Role: Read-optimized Flash memory delivering sub-70 ns instruction fetch latency for rapid system initialization. Use Value: 60 mA active current and 200 µA standby enable energy-efficient operation during idle periods between transactions. |
Use Scenario: Storing line-specific provisioning data and DSP coefficients in carrier-class DSLAM line cards. IC Role / Device Role / Timing Role: In-system reprogrammable storage accessed via microcontroller parallel bus during card initialization. Use Value: PLCC-44 package provides mechanical robustness and thermal cycling reliability required for telecom central office environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV160DB-70EC | 3 V core with 5 V tolerant I/O; 16 Mbit density; 70 ns access; different sector map (32 × 64 KB + 8 × 8 KB) | Requires level translation for pure 5 V systems; larger capacity suits complex bootloaders but increases cost and layout area | Select only if migrating to 3 V design or needing >1 Mbit; not drop-in compatible due to pinout and command set differences |
| MX29LV160CBTI-70G | 3 V supply only; 16 Mbit; 70 ns access; CFI-compliant command set; TSOP-48 package | Incompatible voltage domain; lacks 5 V-only operation; no hardware VCC-sense protection | Use only in new 3 V designs with CFI-aware firmware; unsuitable as direct replacement for AT29C1024-70JC in existing 5 V systems |
Compared with AM29LV160DB-70EC and MX29LV160CBTI-70G, the AT29C1024-70JC uniquely supports true 5 V-only operation with integrated VCC-sense protection and PLCC-44 packaging-critical for maintaining legacy industrial hardware compatibility and robustness in noisy power environments.
Availability
AT29C1024-70JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and point-of-sale terminal boot ROM applications requiring stable component supply and long-term obsolescence management.
Supply support for AT29C1024-70JC 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, Flash memory, and secure authentication ICs for embedded systems.
The AT29C1024 belongs to Atmel's early-generation 5 V Flash memory product line, engineered specifically for in-system reprogrammability in cost-sensitive, space-constrained industrial and consumer applications without requiring high-voltage programming circuitry.
FAQ
What is the operating voltage range for the AT29C1024-70JC?
The AT29C1024-70JC operates strictly at 5 V ± 5%, as specified in its DC and AC operating range table. It does not support 3 V operation or mixed-voltage I/O. This 5 V-only requirement eliminates need for voltage translators but mandates stable 5 V regulation in the host system to ensure reliable sector programming and hardware data protection functionality.
How many sectors does the AT29C1024-70JC have, and what is the sector size?
The AT29C1024-70JC contains 512 sectors, each holding 128 words (256 bytes). This structure is fixed and confirmed in the device description and sector program operation section. Sector addressing uses A7–A15, while A0–A6 select the word within the sector - a layout that enables efficient partial firmware updates without erasing the entire memory array.
Does the AT29C1024-70JC support both hardware and software data protection?
Yes, the AT29C1024-70JC implements dual-layer protection: hardware protection via VCC sensing (inhibits programming below ~3.8 V), 5 ms power-on delay, and noise filtering on WE/CE inputs; and software protection activated by a three-word command sequence (5555H/2AAAH/A0A0H). Both mechanisms coexist and can be used independently or together to safeguard critical firmware or configuration data.
What package type is used for the AT29C1024-70JC?
The AT29C1024-70JC uses a 44-lead Plastic J-Leaded Chip Carrier (PLCC-44) package, identified as "44J" in Atmel's ordering information. Its dimensions (16.7 mm × 16.7 mm) and JEDEC MS-018 AA outline are documented in the packaging section. This package provides mechanical stability and thermal performance suited for industrial PCBs with through-hole or surface-mount assembly.
Can the AT29C1024-70JC be programmed in-system without removing it from the circuit board?
Yes, the AT29C1024-70JC is explicitly designed for in-system reprogrammability. It requires only standard 5 V supply and standard TTL/CMOS logic levels - no external high-voltage programming signals. Programming is executed via sector-based commands issued over the parallel bus, and the device automatically handles internal erase-and-write sequencing once the 128-word sector data is loaded.
AT29C1024-70JC 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:
- 70 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)
AT29C1024-70JC FAQ
1.How can I place an order for AT29C1024-70JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C1024-70JC 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 AT29C1024-70JC reliable?
The price and inventory of AT29C1024-70JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C1024-70JC is usually 5 days.
3.What payment methods are accepted for AT29C1024-70JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C1024-70JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C1024-70JC?
AT29C1024-70JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C1024-70JC 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 AT29C1024-70JC?
For technical support, including AT29C1024-70JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C1024-70JC requirements.
6.How does Aetrix verify that AT29C1024-70JC is sourced from the original manufacturer or authorized distributors?
All AT29C1024-70JC 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 AT29C1024-70JC meets industry standards.
7.What is the process for return or replacement of AT29C1024-70JC?
All AT29C1024-70JC units undergo pre-shipment inspection (PSI). If there is an issue with AT29C1024-70JC, 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 AT29C1024-70JC part is unused and in its original packaging.
Return procedure for AT29C1024-70JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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