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Microchip Technology AT29C010A-90TU-T
- Part No.:
- AT29C010A-90TU-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29C010A-90TU-T.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,056
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Product details
Overview
AT29C010A-90TU-T from Atmel is a 1 Mbit (128K × 8) 5V-only Flash memory IC designed for in-system reprogrammability in embedded boot code and firmware storage applications. It features 70 ns read access time, 10 ms sector program cycle time, 10,000 write/erase endurance, and dual 8K-byte boot blocks with independent programming lockout.
For engineers reviewing the AT29C010A-90TU-T datasheet, AT29C010A-90TU-T pinout, AT29C010A-90TU-T application, or AT29C010A-90TU-T equivalent, key selection criteria include sector-based 128-byte programming, DATA polling and toggle-bit end-of-program detection, hardware/software data protection, and TSOP-32 packaging for space-constrained industrial control and legacy system upgrades.
Technical Context
The AT29C010A-90TU-T implements sector-erase architecture with 1024 × 128-byte sectors, where each sector must be fully loaded before internal auto-erase-and-program execution. Address latching occurs on falling CE or WE edges, with A7–A16 selecting the sector and A0–A6 selecting the byte within it.
It supports three distinct protection mechanisms: VCC sense (<3.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and dual software/hardware lockout - including boot block lockout enabled via 7-command sequence and software data protection activated by 3-byte command at 5555h/2AAAh addresses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - supports full firmware image storage for 8-bit microcontrollers. |
| Read Access Time | 90 ns max - ensures compatibility with 11 MHz bus timing in legacy industrial controllers. |
| Sector Program Time | 10 ms typical - enables rapid field updates of 128-byte firmware patches without full chip erase. |
| Endurance | >10,000 program/erase cycles per sector - suitable for infrequently updated boot code with long service life. |
| Supply Voltage | 5 V ±10% - eliminates need for dedicated programming voltage, simplifying power design in 5V-only systems. |
| Standby Current | 300 µA max (industrial range) - reduces quiescent power in always-on embedded devices. |
| Operating Temp | −40°C to +85°C - certified for industrial temperature environments without derating. |
Pinout & Package
AT29C010A-90TU-T is packaged in a 32-lead Thin Small Outline Package (TSOP Type I), measuring 20 mm × 8 mm × 1.2 mm, compliant with JEDEC MO-142 BD. Pin 1 is marked by a notch or dot; package is Pb/halide-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A7–A16 select sector, A0–A6 select byte within sector. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface compatible with TTL/CMOS logic levels; used for read data output and program data input. |
| CE | Chip Enable | Active-low chip select; when high, device enters high-impedance standby mode with 300 µA current draw. |
| OE | Output Enable | Active-low output control; used with CE to prevent bus contention during read operations. |
| WE | Write Enable | Active-low signal initiating byte load and sector programming; combined with CE/OE to define operation mode. |
| VCC | Power Supply | +5 V ±10% supply; powers all internal logic and charge pumps; VCC sense circuitry disables programming if below 3.8 V. |
| GND | Ground | Reference for all I/O and internal circuitry; requires low-impedance connection to minimize noise during programming. |
| NC | No Connect | Two unconnected pins (positions 15 and 29 in TSOP layout); must remain floating - no external connection permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Two Independent Boot Blocks | 8K-byte lower (0x0000–0x1FFF) and upper (0x1E000–0x1FFFF) blocks support secure boot code storage with programmable lockout via 7-command sequence. |
| DATA Polling & Toggle Bit | I/O7 complement indicates active programming; I/O6 toggling provides real-time status feedback - eliminates need for fixed delay timers in host firmware. |
| Software Data Protection | 3-byte unlock sequence (5555h/2AAAh/5555h + A0h) required before any sector program - prevents accidental writes during power-up/down or noise events. |
| Hardware Write Inhibit | VCC sense, 5 ms power-on delay, OE/CE/WE state monitoring, and 15 ns noise filtering collectively eliminate unintended programming in noisy industrial environments. |
| Single-Cycle Sector Reprogram | Internal latching of 128-byte sector data frees address/data bus during 10 ms auto-erase-and-program - enables concurrent host CPU operation. |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded System Boot Code |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in factory-floor environments with wide temperature swings and EMI. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding initialization routines and application firmware; accessed at power-on reset and during over-the-air update cycles. Use Value: 10,000-cycle endurance and −40°C to +85°C rating ensure reliable operation across 10+ years of industrial deployment without refresh. | Use Scenario: Replacing EPROMs in aging medical diagnostic equipment requiring field-upgradable calibration tables and safety-critical startup sequences. IC Role / Device Role / Timing Role: Pin-compatible Flash replacement for UV-erasable EPROMs; retains data without battery backup and supports in-circuit reprogramming via existing JTAG/debug interfaces. Use Value: 5V-only operation and TSOP-32 footprint allow drop-in replacement without PCB redesign or voltage rail changes. |
| Communications Equipment Configuration | Automated Test Equipment (ATE) Pattern Memory |
Use Scenario: Holding configuration profiles and protocol stacks in telecom line cards that require frequent parameter adjustments during network provisioning. IC Role / Device Role / Timing Role: Sector-erasable configuration store enabling selective updates of VLAN settings or QoS parameters without disrupting active traffic paths. Use Value: 128-byte sector granularity allows fine-grained updates; DATA polling enables deterministic timing for host controller synchronization. | Use Scenario: Storing test pattern vectors in semiconductor ATE platforms where pattern sets change between product families and require fast reload times. IC Role / Device Role / Timing Role: High-speed read-access memory delivering stimulus data to DUT interfaces; programmed offline and verified prior to test execution. Use Value: 90 ns read access meets tight timing budgets for 11 MHz pattern clocks; 300 µA standby current minimizes thermal load in densely packed test head assemblies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-90EC | 3.3 V core with 5 V I/O tolerance; 90 ns read; 1 Mbit density; lacks boot block lockout. | Requires level-shifting in pure 5 V systems; no hardware-enforced boot code protection. | Choose for lower-power 3.3 V designs where boot security is managed externally. |
| MX29LV160CBTI-90G | 3.3 V supply; 16 Mbit density; CFI-compliant; includes 16 Kbyte boot sectors with lock bits. | Higher density and standardized command set; incompatible voltage and pinout. | Choose for new designs needing scalable, standards-based Flash with enhanced security features. |
Compared with AM29LV010B-90EC and MX29LV160CBTI-90G, the AT29C010A-90TU-T delivers true 5 V-only operation and dedicated boot block lockout - critical for maintaining legacy 5 V system integrity and preventing unauthorized modification of startup code.
Availability
AT29C010A-90TU-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy embedded system boot code replacement, and communications equipment configuration requiring stable component supply across extended production lifecycles.
Supply support for AT29C010A-90TU-T 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, Flash memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT29C010A-90TU-T belongs to Atmel's legacy 5V Flash memory product line, engineered specifically for seamless EPROM replacement and in-system firmware updates in cost-sensitive, temperature-stressed embedded systems.
FAQ
What is the maximum read access time specified for the AT29C010A-90TU-T?
The AT29C010A-90TU-T has a maximum read access time of 90 ns under industrial temperature conditions (−40°C to +85°C) and 5 V ±10% supply. This timing is guaranteed across the full operating range and enables direct interfacing with 11 MHz microcontroller buses without wait states. The value reflects the delay from address stabilization and CE/OE assertion to valid data on I/O0–I/O7.
Does the AT29C010A-90TU-T support sector-level erasure only, or is full-chip erase possible?
The AT29C010A-90TU-T supports both sector-level erasure and optional full-chip erase. Sector erase is the default mode - 1024 sectors of 128 bytes each can be erased individually. Full-chip erase is enabled via a 6-byte software command sequence (5555h/2AAAh/5555h/2AAAh/5555h/10h), but becomes disabled if either boot block lockout feature is activated.
How does the boot block lockout feature work on the AT29C010A-90TU-T?
The AT29C010A-90TU-T contains two 8K-byte boot blocks - one at addresses 0x0000–0x1FFF (lower) and one at 0x1E000–0x1FFFF (upper). Lockout is enabled independently for each block using a 7-command software sequence. Once activated, the locked block cannot be erased or programmed; reading remains functional. Status is verified by reading address 0x0002 (lower) or 0x1FFF2 (upper): FEh = unlocked, FFh = locked.
Can the AT29C010A-90TU-T be used as a direct replacement for standard EPROMs like the 27C010?
Yes, the AT29C010A-90TU-T is designed as a pin- and function-compatible replacement for the 27C010 EPROM in 32-pin PLCC or TSOP packages. It matches the 27C010's 1 Mbit organization, address/data bus structure, and read-mode timing. Unlike EPROMs, it requires no UV erasure and supports in-system programming with standard 5 V signals - eliminating the need for UV erasers or socketed programming fixtures.
What are the power consumption characteristics of the AT29C010A-90TU-T during active and standby operation?
The AT29C010A-90TU-T draws up to 50 mA during active read operations (f = 5 MHz, IOUT = 0 mA) and as low as 300 µA in CMOS standby mode (CE = VCC − 0.3 V) across the industrial temperature range. Its low standby current makes it suitable for battery-backed or energy-sensitive applications, while its 275 mW typical active power dissipation ensures thermal stability in enclosed industrial enclosures.
AT29C010A-90TU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 90 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29C010A-90TU-T FAQ
1.How can I place an order for AT29C010A-90TU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-90TU-T 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 AT29C010A-90TU-T reliable?
The price and inventory of AT29C010A-90TU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-90TU-T is usually 5 days.
3.What payment methods are accepted for AT29C010A-90TU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-90TU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C010A-90TU-T?
AT29C010A-90TU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-90TU-T 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 AT29C010A-90TU-T?
For technical support, including AT29C010A-90TU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-90TU-T requirements.
6.How does Aetrix verify that AT29C010A-90TU-T is sourced from the original manufacturer or authorized distributors?
All AT29C010A-90TU-T 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 AT29C010A-90TU-T meets industry standards.
7.What is the process for return or replacement of AT29C010A-90TU-T?
All AT29C010A-90TU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-90TU-T, 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 AT29C010A-90TU-T part is unused and in its original packaging.
Return procedure for AT29C010A-90TU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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