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AT29C1024-12JI
Microchip Technology
IC FLASH 1MBIT PARALLEL 44PLCC
2002 Pcs New Original In Stock
FLASH Memory IC 1Mbit Parallel 120 ns 44-PLCC (16.6x16.6)
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5.0 / 5.0
- (507 Ratings)
AT29C1024-12JI
Product Overview
1260563
DiGi Electronics Part Number
AT29C1024-12JI-DGManufacturer
Microchip Technology
AT29C1024-12JI
Description
IC FLASH 1MBIT PARALLEL 44PLCCInventory
2002 Pcs New Original In Stock
FLASH Memory IC 1Mbit Parallel 120 ns 44-PLCC (16.6x16.6)
Quantity
Minimum 1
Minimum 1
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AT29C1024-12JI Technical Specifications
Category
Memory, Memory
Packaging
-
Series
-
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Memory Type
Non-Volatile
Memory Format
FLASH
Technology
FLASH
Memory Size
1Mbit
Memory Organization
64K x 16
Memory Interface
Parallel
Write Cycle Time - Word, Page
10ms
Access Time
120 ns
Voltage - Supply
4.5V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TC)
Mounting Type
Surface Mount
Package / Case
44-LCC (J-Lead)
Supplier Device Package
44-PLCC (16.6x16.6)
Base Product Number
AT29C1024
Datasheet & Documents
HTML Datasheet
AT29C1024-12JI-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0071
Additional Information
Other Names
AT29C102412JI
Standard Package
27
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Die Website ist sehr übersichtlich, was das Finden der Produkte erleichtert, und die schnelle Lieferung hat mich positiv überrascht.
de desembre 02, 2025
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de desembre 02, 2025
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de desembre 02, 2025
Fast delivery and excellent after-sales service make DiGi Electronics a top choice.
de desembre 02, 2025
My long-term use of their products confirms their exceptional quality and durability, worth every penny.
de desembre 02, 2025
They stand out with their excellent after-sales assistance and honest pricing.
de desembre 02, 2025
The after-sales support was outstanding; they followed up to ensure I was satisfied with my purchase and offered helpful solutions.
de desembre 02, 2025
Receiving my orders on time from DiGi Electronics has made my planning much easier and more predictable.
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Frequently Asked Questions (FAQ)
Can I replace the obsolete AT29C1024-12JI with a modern equivalent like the AT29LV1024 without redesigning my 5V parallel memory interface?
While the AT29LV1024 offers similar 1Mbit parallel flash functionality, it operates at 3.3V and is not electrically compatible with the 5V supply and I/O levels of the AT29C1024-12JI. Direct replacement risks damage to both the memory and host controller due to voltage mismatch. If your system cannot tolerate a logic-level conversion, consider using a 5V-compatible alternative like the SST39VF1601 (16-bit, 1Mbit, 5V) in a PLCC-44 package, but verify timing compatibility—especially the 120 ns access time—and update firmware if page-write algorithms differ.
What are the risks of continuing to use the AT29C1024-12JI in new designs despite its obsolete status and non-RoHS compliance?
Designing in the AT29C1024-12JI poses long-term supply chain and regulatory risks. As an obsolete, non-RoHS part, future availability is unreliable, and it may violate environmental compliance requirements in EU or other regulated markets. Additionally, MSL 2 classification means it requires dry storage and baking before reflow, increasing manufacturing complexity. For new designs, migrate to a supported, RoHS-compliant alternative such as the Winbond W49V002FA (5V, 2Mbit, PLCC-44) and allocate extra board space for potential pinout differences.
How does the 10ms write cycle time of the AT29C1024-12JI impact real-time firmware update performance in embedded systems?
The 10ms per word/page write time of the AT29C1024-12JI introduces significant latency during in-system programming or field firmware updates, making it unsuitable for time-critical applications. Unlike modern flash with sub-millisecond page writes, this delay can cause watchdog timeouts or communication timeouts in RTOS environments. To mitigate, buffer updates in SRAM and schedule writes during idle periods, or consider migrating to a faster parallel flash like the MX29LV160DB (70 ns access, ~200 µs page write) if your MCU supports its command set and voltage levels.
Is the AT29C1024-12JI safe to use in automotive under-hood applications given its -40°C to 85°C operating temperature rating?
The AT29C1024-12JI’s industrial temperature range (-40°C to 85°C) meets basic automotive ambient requirements, but it lacks AEC-Q100 qualification and long-term reliability data required for safety-critical automotive systems. Furthermore, its obsolete status means no ongoing reliability monitoring or failure analysis support from Microchip. For under-hood use, select an automotive-grade alternative such as the Spansion S29AL016J (16Mbit, AEC-Q100 Grade 2, -40°C to 105°C), even if it requires a density and interface adaptation—this ensures traceability, longevity, and compliance with OEM qualification standards.
Can I interface the AT29C1024-12JI directly with a 3.3V microcontroller using level shifters, and what timing margins should I expect?
Yes, you can interface the 5V AT29C1024-12JI with a 3.3V MCU using bidirectional level translators on the data bus and unidirectional shifters on control lines (CE#, OE#, WE#), but you must account for added propagation delay. The 120 ns access time already leaves minimal margin at higher MCU clock speeds; level shifters typically add 10–20 ns, potentially violating setup/hold times. Validate timing using worst-case conditions (85°C, 4.5V VCC) and consider reducing system clock speed or inserting wait states. For new designs, prefer native 3.3V/5V-tolerant flashes like the AT49BV1614 to avoid translation complexity and improve signal integrity.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
AT29C1024-12JI CAD Models
Microchip Technology AT29C1024-12JI PCB symbols & footprints
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