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Microchip Technology AT29C010A-90TI
- Part No.:
- AT29C010A-90TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29C010A-90TI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,048
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Product details
Overview
AT29C010A-90TI from Atmel is a 1-Mbit (128K × 8) 5-volt-only Flash memory IC used for nonvolatile code and data storage in embedded systems. It delivers 90 ns read access time, supports sector-based reprogramming with 1024 × 128-byte sectors, includes dual 8K-byte boot blocks with independent programming lockout, and operates across -40°C to +85°C industrial temperature range.
For engineers reviewing the AT29C010A-90TI datasheet, AT29C010A-90TI pinout, AT29C010A-90TI application, or AT29C010A-90TI equivalent, this page provides verified technical context, real-world use cases, validated alternatives, and supply-chain support for industrial-grade firmware storage design.
Technical Context
The AT29C010A-90TI implements a sector-erase/program architecture with internal latching of 128-byte pages and automatic erase-before-program sequencing. Its control logic responds to standard CE/OE/WE timing, enabling EPROM-like read operation and byte-load–initiated program cycles without external high-voltage circuitry.
Hardware data protection uses VCC sensing (<3.8 V inhibit), 5 ms power-on delay, and noise filtering on WE/CE inputs; software protection requires three-command sequences (e.g., AAh/55h/A0h) to enable/disable write access. Boot block lockout is set via seven-command algorithm and disables chip erase when active.
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 - enables direct execution from flash (XIP) in systems with ≤11 MHz bus timing. |
| Sector Size | 128 bytes per sector (1024 total sectors) - allows fine-grained firmware updates without erasing entire device. |
| Program Cycle Time | 10 ms per sector - deterministic erase-and-program duration simplifies host controller timeout handling. |
| Supply Voltage | 5 V ± 10% - compatible with legacy 5 V logic rails; no auxiliary voltage required for programming. |
| Endurance | >10,000 program/erase cycles per sector - sufficient for field firmware upgrades over 5+ year product life. |
| Standby Current | 300 µA max (industrial temp.) - enables low-power hold mode in battery-backed systems. |
| Operating Temp. | -40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor equipment. |
Pinout & Package
AT29C010A-90TI is supplied in a 32-lead PLCC (32J) package, measuring 12.5 mm × 12.5 mm × 3.5 mm, with J-leads compliant to JEDEC MS-016 AE. Pin 1 identifier is a corner chamfer; leads are gull-wing shaped with 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 131,072-word addressing; A0–A6 select byte within 128-byte sector. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit CMOS/TTL-compatible interface; carries data during read, byte load, and polling operations. |
| CE | Chip Enable | Active-low chip select; must be low for read or program; high forces outputs to high-Z and inhibits writes. |
| OE | Output Enable | Active-low output control; used with CE to gate read data; high disables outputs during programming. |
| WE | Write Enable | Active-low write strobe; initiates byte loads and triggers internal program cycle after 128-byte latch. |
| VCC | Power Supply | +5 V ± 10% main supply; powers core logic and I/O buffers; internally regulated for programming. |
| GND | Ground | Reference node for all signals and power; separate ground plane recommended for noise immunity. |
| NC | No Connect | Two unconnected pins (PLCC pins 6 and 13); must remain floating - no external tie required. |
Key Features
| Feature | Design Value |
|---|---|
| Two 8K-byte boot blocks with independent lockout | Enables secure bootloader storage: lower block (0x0000–0x1FFF) and upper block (0x1E000–0x1FFFF) can be permanently write-protected to prevent corruption during field updates. |
| Data polling (I/O7) and toggle bit (I/O6) | Provides two hardware-synchronized methods to detect program completion without fixed delays - reduces host CPU polling overhead and improves system responsiveness. |
| Software data protection (3-byte command sequence) | Prevents accidental writes during power transitions or noise events by requiring AAh/55h/A0h before each sector program - eliminates need for external write-protect hardware. |
| Hardware VCC sense and noise filtering | Automatically inhibits programming if VCC drops below 3.8 V or if WE/CE pulses are <15 ns wide - ensures reliable operation in electrically noisy industrial environments. |
| Single-cycle sector erase-and-program | Internal timer manages full sector erase followed by simultaneous 128-byte programming - simplifies firmware update routines and guarantees atomicity at sector level. |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded System Boot Code |
|---|---|
|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation cabinets with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with guaranteed 90 ns read access and industrial temperature rating; boot blocks protect startup routines from overwrite during remote firmware patches. Use Value: Eliminates need for external EEPROM + SRAM combinations; sector locking prevents bricking during partial updates over Modbus or CANopen. |
Use Scenario: Holding boot ROM and BIOS code in 8-bit microcontroller-based medical instruments where regulatory compliance requires immutable startup logic. IC Role / Device Role / Timing Role: Primary boot memory mapped at reset vector; dual boot blocks allow A/B firmware partitioning with hardware-enforced write protection. Use Value: Meets IEC 62304 Class C software requirements by preventing unauthorized modification of certified boot code through both hardware and software lock mechanisms. |
| Point-of-Sale Terminal Configuration | Telecom Line Card Parameter Tables |
|
Use Scenario: Retaining localized language packs, tax tables, and peripheral driver settings in retail terminals subject to frequent regional reconfiguration. IC Role / Device Role / Timing Role: Field-upgradable data storage using sector-level writes; DATA polling confirms completion before terminal resumes transaction processing. Use Value: Enables zero-downtime parameter updates via USB stick - 10 ms sector program time allows full table reload in under 200 ms. |
Use Scenario: Storing line calibration coefficients, protocol stack versions, and fault log history in DSLAM line cards operating in telecom central offices. IC Role / Device Role / Timing Role: Persistent parameter storage with >10,000 endurance cycles; CMOS standby current <300 µA minimizes backplane power draw during idle periods. Use Value: Supports 15-year service life with quarterly calibration updates while meeting NEBS Level 3 thermal and power constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF010-90-4C-NHE | Same density (1 Mbit), 90 ns access, but uses 3.3 V supply and requires VPP = 12 V for programming; no boot block lockout. | Requires level-shifting for 5 V systems; lacks hardware-secured boot regions - unsuitable for safety-critical boot code storage. | Select only if migrating to 3.3 V platform and external high-voltage generation is acceptable. |
| MX29LV160CBTI-90G | 16 Mbit density, 90 ns access, 3 V supply, CFI-compliant; includes 16/64 KB uniform blocks instead of 128-byte sectors. | Higher capacity supports larger firmware; different block structure complicates porting of existing sector-based update logic. | Choose for new designs needing scalability beyond 1 Mbit, but expect firmware update layer redesign. |
Compared with SST39VF010-90-4C-NHE and MX29LV160CBTI-90G, the AT29C010A-90TI uniquely combines 5 V operation, 128-byte sector granularity, dual boot block lockout, and software/hardware write protection - making it irreplaceable for legacy 5 V industrial systems requiring secure, fine-grained firmware updates.
Availability
AT29C010A-90TI is available at Aetrix Electronics and suitable for industrial PLCs, legacy medical devices, and telecom line cards requiring stable component supply with long-term lifecycle assurance and consistent parametric performance.
Supply support for AT29C010A-90TI 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, nonvolatile memory, and security ICs for industrial, automotive, and consumer applications.
The AT29C010A-90TI belongs to Atmel's legacy parallel-interface Flash memory product line, designed specifically for drop-in replacement of EPROMs in 5 V embedded systems requiring in-system reprogrammability without high-voltage programming circuits.
FAQ
What is the maximum operating temperature range for the AT29C010A-90TI?
The AT29C010A-90TI is rated for industrial temperature operation from -40°C to +85°C. This specification is confirmed in the "DC and AC Operating Range" table of the official datasheet (Rev. 0394F–FLASH–02/03), where the "-90TI" suffix explicitly denotes the industrial grade variant. The device maintains full functionality-including 90 ns read access and 10 ms sector programming-across this full range.
Does the AT29C010A-90TI require external high voltage for programming?
No, the AT29C010A-90TI does not require external high voltage for programming. It is a 5-volt-only Flash memory: all program and erase operations are executed using standard 5 V logic levels on CE, OE, and WE pins. Internal charge pumps generate necessary voltages, eliminating the need for VPP = 12 V or other auxiliary supplies - a key distinction from older EPROM or early Flash devices.
How many sectors does the AT29C010A-90TI have, and what is the size of each sector?
The AT29C010A-90TI contains 1024 sectors, each 128 bytes in size. This is explicitly stated in the "Features" section of the datasheet and confirmed in the "Device Operation" description: "1024 Sectors (128 Bytes/sector)". Sector addressing uses A7–A16, while A0–A6 select the byte within the sector - enabling precise, non-disruptive firmware updates.
Can the boot blocks on the AT29C010A-90TI be independently locked?
Yes, the AT29C010A-90TI has two 8K-byte boot blocks - one at the lowest addresses (0x0000–0x1FFF) and one at the highest (0x1E000–0x1FFFF) - and the programming lockout feature can be enabled independently for either or both blocks. Activation requires a documented seven-command algorithm; once set, the lock cannot be reversed without chip erase (which itself is disabled if either boot block is locked).
What methods does the AT29C010A-90TI provide to detect end-of-program status?
The AT29C010A-90TI provides two hardware-synchronized methods: DATA polling on I/O7 (returns complement of last loaded byte until complete) and Toggle Bit detection on I/O6 (toggles between 0 and 1 during programming, then stabilizes). Both are usable at any time during the 10 ms program cycle and are detailed in Sections 4 and 5 of the datasheet with corresponding waveforms and timing specs.
AT29C010A-90TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- 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-90TI FAQ
1.How can I place an order for AT29C010A-90TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-90TI 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-90TI reliable?
The price and inventory of AT29C010A-90TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-90TI is usually 5 days.
3.What payment methods are accepted for AT29C010A-90TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-90TI transactions.
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4.How is shipping managed for AT29C010A-90TI?
AT29C010A-90TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-90TI 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-90TI?
For technical support, including AT29C010A-90TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-90TI requirements.
6.How does Aetrix verify that AT29C010A-90TI is sourced from the original manufacturer or authorized distributors?
All AT29C010A-90TI 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-90TI meets industry standards.
7.What is the process for return or replacement of AT29C010A-90TI?
All AT29C010A-90TI units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-90TI, 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-90TI part is unused and in its original packaging.
Return procedure for AT29C010A-90TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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