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Microchip Technology AT29C010A-90JC
- Part No.:
- AT29C010A-90JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29C010A-90JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,096
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Product details
Overview
AT29C010A-90JC from Atmel is a 5V-only, 1 Mbit (128K × 8) 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 two lockable 8K-byte boot blocks, and operates across commercial temperature range (0°C to 70°C) in PLCC-32 package.
For engineers reviewing the AT29C010A-90JC datasheet, AT29C010A-90JC pinout, AT29C010A-90JC application, or AT29C010A-90JC equivalent, this page provides verified technical context, real-world use cases, pin-level design meaning, endurance and protection features, and validated alternative options for legacy system maintenance and industrial firmware storage.
Technical Context
The AT29C010A-90JC implements sector-erase/program architecture with internal latching of 128-byte pages, enabling background bus release during programming. Its dual boot blocks support secure firmware startup from either lowest or highest 8K address space, with independent software-lockout activation via seven-command sequence.
Hardware data protection uses VCC sense (<3.8 V inhibit), 5 ms power-on delay, and noise filtering (<15 ns pulse rejection); software protection requires three-command entry (AAh/55h/A0h) before each sector program. DATA polling on I/O7 and toggle-bit detection on I/O6 provide cycle completion signaling without external timing dependencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), sufficient for full BIOS/firmware images in 8-bit microcontroller systems |
| Read Access Time | 90 ns max - enables direct execution from flash in 8–12 MHz 8051/Z80/68K-based controllers |
| Sector Size | 128 bytes × 1024 sectors - allows fine-grained firmware updates without erasing entire device |
| Program Cycle Time | 10 ms per sector - deterministic timing for host MCU firmware update state machines |
| Endurance | >10,000 write/erase cycles per sector - supports field-upgradable industrial control logic |
| Supply Voltage | 5 V ± 10% - compatible with legacy 5V TTL/CMOS logic rails without level-shifting |
| Standby Current | 100 µA typical - meets low-power requirements for battery-backed embedded systems |
Pinout & Package
AT29C010A-90JC is packaged in 32-lead Plastic J-Leaded Chip Carrier (PLCC-32), JEDEC MS-016 variant AE, with 1.27 mm pitch, 12.45 mm × 14.95 mm body, and pin 1 identifier at corner notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus; A0–A6 select byte within 128-byte sector, A7–A16 select sector |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; I/O7 used for DATA polling, I/O6 for toggle-bit status monitoring |
| CE | Chip Enable | Active-low chip select; must be low for read/program; high disables outputs and enters standby |
| OE | Output Enable | Active-low output control; used with CE to manage bus contention during reads |
| WE | Write Enable | Active-low write strobe; initiates byte load or sector program when CE low and OE high |
| VCC | Power Supply | +5 V ± 10% main supply; powers core logic and I/O buffers |
| GND | Ground | Reference return path for all signals and power; decoupling required within 1 cm of VCC pin |
| NC | No Connect | Two unconnected pins (positions 6 and 9 in PLCC top view); must remain floating, not tied |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Lockout | Two independent 8K-byte regions (0x00000–0x01FFF and 0x1E000–0x1FFFF) prevent accidental overwrite of bootloader code |
| Software Data Protection | Three-command unlock sequence (5555h/2AAAh/5555h + A0h) required before every sector program, preventing spurious writes |
| Hardware Program Inhibit | VCC sense, 5 ms power-on delay, and 15 ns noise filtering eliminate false triggers during power transients or EMI events |
| Data Polling & Toggle Bit | I/O7 complement-read and I/O6 toggling provide asynchronous, bus-compatible program completion detection without timers or interrupts |
| Single 5V Operation | Eliminates need for +12 V programming voltage, simplifying PCB layout and reducing BOM count in 5V-only systems |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Replacement |
|---|---|
Use Scenario: Storing ladder logic and configuration data in programmable logic controllers with infrequent field updates. IC Role / Device Role / Timing Role: Nonvolatile code/data repository accessed via 8-bit parallel bus; 90 ns read time supports real-time scan cycle execution. Use Value: Boot block lockout ensures bootloader integrity across 10,000+ field updates; 100 µA standby current extends backup battery life. |
Use Scenario: Replacing obsolete 27C010 EPROMs in vintage desktop motherboards requiring in-system reprogramming. IC Role / Device Role / Timing Role: Drop-in Flash replacement for 1 Mbit EPROMs; identical pinout and 5V operation enable direct socket substitution. Use Value: Sector erase eliminates full-chip UV erasure; software chip erase (6-byte command) enables rapid BIOS recovery without hardware programmer. |
| Embedded Instrument Bootloader | Telecom Line Card Configuration |
Use Scenario: Hosting secure boot firmware in test equipment that validates calibration data before executing measurement routines. IC Role / Device Role / Timing Role: Dual boot blocks store primary and fallback firmware images; lockout prevents corruption during remote firmware patching. Use Value: Hardware + software protection layers ensure bootloader remains intact during brownout conditions or communication errors. |
Use Scenario: Storing protocol stack parameters and hardware configuration profiles in T1/E1 line interface cards. IC Role / Device Role / Timing Role: Read-mostly storage accessed during card initialization; 128-byte sector granularity enables per-port parameter updates. Use Value: 10 ms sector program time aligns with card reset timing budgets; CMOS/TTL compatibility avoids level-shifter components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-90JC | 3.3 V core with 5 V I/O tolerance; 90 ns read; 1 Mbit; PLCC-32; no boot block lockout | Lacks dedicated boot blocks and software lockout - requires external MCU-based protection logic | Choose if migrating to lower-voltage system; verify VCC stability and add external write-protection circuitry |
| MX29LV160CBTI-90G | 3.3 V only; 16 Mbit density; TSOP-48; CFI-compliant; 90 ns read; boot block architecture (top/bottom) | Higher density and modern CFI interface; incompatible pinout and voltage - not drop-in | Prefer for new designs needing scalability; requires PCB redesign and CFI-aware bootloader |
Compared with AM29LV010B-90JC and MX29LV160CBTI-90G, the AT29C010A-90JC uniquely combines 5V-only operation, hardware/software dual protection, and factory-configurable boot block lockout - making it irreplaceable for maintaining legacy 5V industrial systems where firmware security and pin compatibility are mandatory.
Availability
AT29C010A-90JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS replacement, embedded instrument bootloaders, and telecom line card configuration requiring stable component supply and long-term obsolescence management.
Supply support for AT29C010A-90JC 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 secure authentication devices.
The AT29C010A-90JC belongs to Atmel's legacy parallel Flash memory product line, designed specifically for 5V embedded systems requiring in-system reprogrammability, robust data retention, and hardware-enforced write protection in industrial and computing applications.
FAQ
What is the operating temperature range for AT29C010A-90JC?
The AT29C010A-90JC is rated for commercial temperature operation from 0°C to 70°C. This is confirmed in the Ordering Information table, where "-90JC" suffix denotes the commercial-grade PLCC-32 variant. Industrial variants (e.g., AT29C010A-90JI) support –40°C to +85°C, but the -90JC specifically targets ambient-controlled environments like desktop PCs and lab instruments.
Does AT29C010A-90JC require high-voltage programming?
No, the AT29C010A-90JC operates with single 5 V ± 10% supply and does not require elevated programming voltages. All reprogramming commands - including sector erase, byte load, and software protection enable/disable - are executed using standard 5 V logic levels, eliminating the need for charge pumps or external HV generators in system design.
How is program completion detected on AT29C010A-90JC?
AT29C010A-90JC supports two hardware-confirmed methods: DATA polling on I/O7 (complement of last loaded byte until completion) and toggle-bit detection on I/O6 (repeated reads cause I/O6 to alternate until programming finishes). Both methods are fully documented in the AC Characteristics section and require no external components or timing assumptions.
Can AT29C010A-90JC be used as a direct replacement for 27C010 EPROMs?
Yes, the AT29C010A-90JC is pin-compatible and functionally equivalent to the 27C010 EPROM in read mode, with identical 32-pin PLCC footprint, address/data bus mapping, and CE/OE/WE control signals. Unlike EPROMs, it adds in-system reprogrammability and hardware write protection - enabling upgrade without UV eraser or socket replacement.
What happens if software data protection is enabled on AT29C010A-90JC?
Once software data protection is enabled on AT29C010A-90JC, all subsequent program operations require the three-command unlock sequence (AAh/55h/A0h) before loading data. Attempts to program without this sequence trigger internal timers but write no data; reads during such attempts behave as polling operations until timeout, preserving memory integrity during power glitches or firmware bugs.
AT29C010A-90JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-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:
- 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT29C010A-90JC FAQ
1.How can I place an order for AT29C010A-90JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-90JC 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-90JC reliable?
The price and inventory of AT29C010A-90JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-90JC is usually 5 days.
3.What payment methods are accepted for AT29C010A-90JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-90JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C010A-90JC?
AT29C010A-90JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-90JC 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-90JC?
For technical support, including AT29C010A-90JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-90JC requirements.
6.How does Aetrix verify that AT29C010A-90JC is sourced from the original manufacturer or authorized distributors?
All AT29C010A-90JC 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-90JC meets industry standards.
7.What is the process for return or replacement of AT29C010A-90JC?
All AT29C010A-90JC units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-90JC, 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-90JC part is unused and in its original packaging.
Return procedure for AT29C010A-90JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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