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Microchip Technology AT29C010A-12JC
- Part No.:
- AT29C010A-12JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29C010A-12JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,415
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Product details
Overview
AT29C010A-12JC from Atmel is a 5V-only, 1 Mbit (128K × 8) Flash memory IC designed for in-system reprogrammability in embedded boot code and firmware storage applications. It delivers 120 ns read access time, supports sector-based programming with 1024 × 128-byte sectors, and features dual 8K-byte boot blocks with independent lockout capability. Its CMOS/TTL-compatible I/O and industrial temperature range (-40°C to +85°C) make it suitable for legacy industrial controllers and BIOS storage.
For engineers reviewing the AT29C010A-12JC datasheet, AT29C010A-12JC pinout, AT29C010A-12JC application, or AT29C010A-12JC equivalent, key selection considerations include its 120 ns access timing, 5V-only reprogramming architecture, hardware/software data protection mechanisms, boot block lockout behavior, and PLCC-32 package compatibility with legacy socketed designs.
Technical Context
The AT29C010A-12JC implements a sector-erase-and-program architecture where each 128-byte sector is internally latched before simultaneous programming, freeing the address/data bus during tWC = 10 ms internal cycle. It uses standard EPROM-like read protocol (CE/OE low, WE high) and supports both DATA polling on I/O7 and toggle-bit detection on I/O6 for program completion signaling.
Hardware data protection includes VCC sense (<3.8 V inhibits programming), 5 ms power-on delay, and noise filtering (<15 ns pulses ignored); software protection requires three-command sequences (e.g., AAh/55h/A0h) to enable/disable. Boot block lockout is activated via a seven-command algorithm and disables chip erase if either 8K-byte block is secured.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - matches standard 8-bit microcontroller data bus width without byte-swapping logic. |
| Read Access Time | 120 ns max - compatible with 8 MHz Z80, 68K, and early ARM7 systems requiring ≤120 ns memory wait states. |
| Supply Voltage | 5 V ± 10% - eliminates need for dedicated programming voltage; operates directly from system 5V rail. |
| Sector Size | 128 bytes per sector (1024 sectors total) - enables fine-grained firmware updates while minimizing risk of corruption during partial rewrites. |
| Endurance | >10,000 program/erase cycles per sector - sufficient for field-upgradable embedded firmware with infrequent updates. |
| Standby Current | 300 µA max (industrial temp) - enables low-power retention in battery-backed systems during sleep modes. |
| Operating Temp | -40°C to +85°C - certified for industrial control cabinets, automotive ECUs, and telecom line cards without derating. |
Pinout & Package
AT29C010A-12JC is packaged in a 32-lead Plastic J-Leaded Chip Carrier (PLCC-32), compliant with JEDEC MS-016 Variation AE. Pin 1 is marked by a corner notch; body dimensions are 12.5 mm × 12.5 mm × 3.5 mm (max height).
| 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 during programming. |
| CE | Chip Enable | Active-low chip select; must be low for read or byte-load operations; high state forces outputs to high-Z and disables programming. |
| OE | Output Enable | Active-low output control; used with CE to manage bus contention; must be high during programming cycles. |
| WE | Write Enable | Active-low write strobe; controls byte loading and initiates sector programming when CE is low and OE is high. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit TTL/CMOS-compatible data path; carries input data during programming and output data during reads; supports DATA polling on I/O7 and toggle-bit detection on I/O6. |
| VCC | Power Supply | +5 V ± 10% supply; powers core logic and I/O buffers; internal VCC sense circuitry prevents programming below ~3.8 V. |
| GND | Ground | Reference return for all signals and power; requires low-impedance connection to minimize noise-induced read errors. |
| NC | No Connect | Two unconnected pins (positions 6 and 9 in PLCC top view); must remain floating - no external pull-up/down or routing. |
Key Features
| Feature | Design Value |
|---|---|
| Dual boot block lockout | Independent 8K-byte lower (0x0000–0x1FFF) and upper (0x1E000–0x1FFFF) blocks can be permanently write-protected to safeguard bootloader and recovery firmware. |
| Software data protection | Three-command sequence (AAh/55h/A0h) enables/disables write access - prevents accidental overwrites during power transitions or noise events. |
| Hardware data protection | VCC sense, 5 ms power-on delay, and 15 ns noise filtering eliminate need for external voltage monitors or RC reset circuits. |
| DATA polling & toggle bit | I/O7 complement indicates active programming; I/O6 toggling provides asynchronous end-of-cycle detection without CPU polling overhead. |
| Single-cycle sector program | Entire 128-byte sector erased and programmed in one internal 10 ms cycle - simplifies firmware update routines and reduces host MCU intervention. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Retention |
|---|---|
|
Use Scenario: Storing configuration logic and motion control algorithms in programmable logic controllers deployed in factory automation environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with direct 8-bit bus interface; 120 ns access satisfies timing budgets of 80C188-based control CPUs. Use Value: Boot block lockout prevents corruption of startup routines during field firmware upgrades; industrial temperature rating ensures reliability in unconditioned control cabinets. |
Use Scenario: Holding BIOS code in pre-UEFI desktop motherboards and embedded x86 single-board computers where socketed Flash replacement is required. IC Role / Device Role / Timing Role: Drop-in EPROM replacement with identical pinout and read protocol; supports standard BIOS ROM shadowing and checksum validation. Use Value: 5V-only operation eliminates need for 12V programming supplies; PLCC-32 package fits existing sockets used for 27C010/27C020 EPROMs. |
| Telecom Line Card Bootloader | Automotive ECU Calibration Data |
|
Use Scenario: Hosting boot code and diagnostic firmware on T1/E1 interface cards operating in telecom central offices with strict EMI and thermal requirements. IC Role / Device Role / Timing Role: Primary boot memory accessed at power-on reset; sector programming allows field patching of protocol stack modules without full reflash. Use Value: Hardware data protection prevents spurious writes during hot-swap insertion; 300 µA standby current minimizes standby power draw across hundreds of line cards. |
Use Scenario: Storing engine calibration maps and adaptive learning parameters in engine control units subjected to vibration, thermal cycling, and electrical transients. IC Role / Device Role / Timing Role: Field-updatable nonvolatile storage interfaced to 16-bit MCUs (e.g., Motorola MPC5xx); retains data through ignition cycles and battery disconnects. Use Value: >10,000 endurance cycles support lifetime recalibration; boot block lockout secures critical startup parameters against overwrite during dealership flash updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29F010B-120EC | 48-pin TSOP, 5V-only, 120 ns access, but lacks boot block lockout and software data protection. | Requires external hardware write-protection; not suitable for systems needing secure bootloader isolation. | Select only if board layout supports TSOP-48 and boot security is managed externally. |
| MX29LV160CBTI-12G | 48-pin TSOP, 3V/5V tolerant, 120 ns access, includes CFI-compliant command set and 16/64Kbyte boot sectors. | Supports modern flash file systems and JTAG debugging; incompatible pinout and voltage logic levels. | Choose for new designs requiring 3V compatibility and standardized flash interfaces - not a drop-in replacement. |
Compared with AM29F010B-120EC and MX29LV160CBTI-12G, the AT29C010A-12JC uniquely combines PLCC-32 socket compatibility, dual boot block lockout, and 5V-only simplicity - making it irreplaceable in legacy-replacement scenarios where physical form factor and firmware security co-depend.
Availability
AT29C010A-12JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS retention, telecom line card bootloaders, and automotive ECU calibration data applications requiring stable component supply across extended product lifecycles.
Supply support for AT29C010A-12JC 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, nonvolatile memory, and secure authentication ICs for industrial, automotive, and communications markets.
The AT29C010A-12JC belongs to Atmel's legacy parallel Flash memory product line, engineered specifically for socketed, in-system reprogrammable firmware storage in 8-bit and 16-bit embedded systems with strict 5V-only power constraints.
FAQ
What is the maximum read access time specified for the AT29C010A-12JC?
The AT29C010A-12JC has a maximum read access time of 120 ns, as confirmed by its ordering code suffix "-12" and AC Read Characteristics table. This timing applies across the full industrial temperature range (-40°C to +85°C) and ensures compatibility with 8 MHz Z80 and 68000-based systems requiring ≤120 ns memory wait states. The device achieves this using Atmel's advanced nonvolatile CMOS process.
Does the AT29C010A-12JC require a high-voltage programming supply?
No, the AT29C010A-12JC operates with a single 5V ± 10% supply for both read and program operations - no external 12V or 21V programming voltage is needed. Programming is enabled via 5V-only command sequences (e.g., AAh/55h/A0h), and internal circuitry includes VCC sense to inhibit writes below ~3.8 V, eliminating external HV generators and simplifying system design.
How does boot block lockout function on the AT29C010A-12JC?
The AT29C010A-12JC contains two independent 8K-byte boot blocks: one at addresses 0x0000–0x1FFF (lower) and another at 0x1E000–0x1FFFF (upper). Lockout is activated via a seven-command software algorithm; once set, that block becomes permanently read-only - no erasure or programming is possible. Enabling lockout on either block also disables the global chip erase function, ensuring bootloader integrity.
Can the AT29C010A-12JC be used as a direct replacement for EPROMs like the 27C010?
Yes, the AT29C010A-12JC is pin-compatible with 27C010 EPROMs in PLCC-32 packages and uses identical read protocol (CE/OE low, WE high), enabling socket-level replacement. However, unlike EPROMs, it supports in-system reprogramming without UV erasure, requires no windowed package, and adds hardware/software write protection - making it a functional and physical upgrade path.
What methods are available to detect program completion on the AT29C010A-12JC?
The AT29C010A-12JC provides two hardware-confirmed methods: DATA polling on I/O7 (complement of last loaded byte indicates active programming; true data indicates completion) and toggle-bit detection on I/O6 (toggling between 0/1 during programming, steady state upon completion). Both methods are valid at any point during the 10 ms internal cycle and require no additional timing components.
AT29C010A-12JC 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:
- 120 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-12JC FAQ
1.How can I place an order for AT29C010A-12JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-12JC 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-12JC reliable?
The price and inventory of AT29C010A-12JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-12JC is usually 5 days.
3.What payment methods are accepted for AT29C010A-12JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-12JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C010A-12JC?
AT29C010A-12JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-12JC 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-12JC?
For technical support, including AT29C010A-12JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-12JC requirements.
6.How does Aetrix verify that AT29C010A-12JC is sourced from the original manufacturer or authorized distributors?
All AT29C010A-12JC 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-12JC meets industry standards.
7.What is the process for return or replacement of AT29C010A-12JC?
All AT29C010A-12JC units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-12JC, 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-12JC part is unused and in its original packaging.
Return procedure for AT29C010A-12JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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