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AT29C010A-90PI
Microchip Technology
IC FLASH 1MBIT PARALLEL 32DIP
1411 Pcs New Original In Stock
FLASH Memory IC 1Mbit Parallel 90 ns 32-PDIP
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AT29C010A-90PI
Product Overview
1273181
DiGi Electronics Part Number
AT29C010A-90PI-DGManufacturer
Microchip Technology
AT29C010A-90PI
Description
IC FLASH 1MBIT PARALLEL 32DIPInventory
1411 Pcs New Original In Stock
FLASH Memory IC 1Mbit Parallel 90 ns 32-PDIP
Quantity
Minimum 1
Minimum 1
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AT29C010A-90PI 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
128K x 8
Memory Interface
Parallel
Write Cycle Time - Word, Page
10ms
Access Time
90 ns
Voltage - Supply
4.5V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TC)
Mounting Type
Through Hole
Package / Case
32-DIP (0.600", 15.24mm)
Supplier Device Package
32-PDIP
Base Product Number
AT29C010
Datasheet & Documents
HTML Datasheet
AT29C010A-90PI-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0071
Additional Information
Other Names
AT29C010A90PI
Standard Package
12
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Their products rarely require repairs, saving me time and money.
de desembre 02, 2025
DiGi Electronics delivers excellent products at prices that are hard to beat in the market.
de desembre 02, 2025
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Frequently Asked Questions (FAQ)
Can the AT29C010A-90PI still be used in new designs despite being marked as obsolete by Microchip Technology?
The AT29C010A-90PI is officially obsolete, meaning Microchip no longer manufactures or supports it for new designs. While existing inventory may be available through distributors, relying on it introduces supply chain and long-term reliability risks. New designs should migrate to a modern, actively supported parallel flash memory such as the AT29LV010A or equivalent from Winbond (e.g., W29EE011), which offer similar 1Mbit parallel interfaces with better availability, lower power, and RoHS compliance. Continuing with the AT29C010A-90PI could lead to last-time buy scenarios and potential field failures if replacement becomes impossible.
What are the key reliability risks when designing in the AT29C010A-90PI in industrial environments operating near -40°C to 85°C?
Although the AT29C010A-90PI is rated for -40°C to 85°C (TC), its non-volatile FLASH technology has known endurance limitations—typically 10,000 write/erase cycles—and data retention can degrade over time at elevated temperatures. In industrial applications with frequent firmware updates or logging, this may lead to premature failure. Additionally, being RoHS non-compliant, the part may contain lead-based solder, which can cause tin whisker growth in high-reliability environments. For mission-critical systems, consider using a radiation-tolerant or automotive-grade alternative with enhanced cycling endurance and conformal coating compatibility.
How does the AT29C010A-90PI compare to the Winbond W29EE011 when replacing a legacy 1Mbit parallel flash in an existing through-hole PCB design?
The Winbond W29EE011 is a viable drop-in replacement for the AT29C010A-90PI in many legacy systems due to its identical 32-DIP package, 5V operation, and 1Mbit (128K x 8) organization. However, the W29EE011 has a faster 70 ns access time and supports page-mode writes, reducing overall write cycle time compared to the AT29C010A-90PI’s 10 ms per word/page. One critical difference: the W29EE011 is RoHS-compliant and actively manufactured, reducing obsolescence risk. Before substitution, verify control signal timing (especially /CE, /OE, /WE) and ensure your system can tolerate the slightly different input capacitance and leakage currents.
What design precautions are necessary when interfacing the AT29C010A-90PI with a modern 3.3V microcontroller in a mixed-voltage system?
The AT29C010A-90PI requires a 4.5V to 5.5V supply and has TTL-compatible inputs, meaning its logic-high threshold is ~2.0V. Direct connection to a 3.3V microcontroller risks unreliable operation because 3.3V outputs may not consistently meet the high-level input voltage requirement under load or temperature variation. To ensure robust communication, use a level translator (e.g., TXB0108 or SN74LVC8T245) or design with a 5V-tolerant I/O buffer. Additionally, ensure the microcontroller’s read/write timing meets the 90 ns access time requirement—many modern MCUs run too fast without wait-state insertion, leading to data corruption.
Is it safe to use the AT29C010A-90PI in a battery-powered embedded system where power consumption during standby is critical?
The AT29C010A-90PI is not ideal for low-power battery applications. While it has a typical standby current of 100 µA (max 300 µA), this is significantly higher than modern flash alternatives like the AT29LV010A (1 µA standby) or serial SPI flash devices. In always-on or sleep-mode systems, this quiescent draw can drastically reduce battery life. Furthermore, the 5V supply requirement necessitates a boost converter if running from a single-cell Li-ion battery, adding inefficiency. For new low-power designs, consider migrating to a 3V-compatible parallel or serial flash with deep power-down modes, even if it requires minor firmware changes.
Quality Assurance (QC)
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AT29C010A-90PI CAD Models
Microchip Technology AT29C010A-90PI PCB symbols & footprints
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