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Microchip Technology AT29C010A-70JC
- Part No.:
- AT29C010A-70JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29C010A-70JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,620
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Product details
Overview
AT29C010A-70JC from Atmel is a 1 Mbit (128K × 8) 5V-only Flash memory IC used for nonvolatile program/data storage in embedded systems, supporting in-system reprogramming via sector erase-and-program operations. It delivers 70 ns read access time, 10 ms sector program cycle time, and features hardware/software data protection, two 8K-byte boot blocks with independent lockout, and CMOS/TTL-compatible I/O.
For engineers reviewing the AT29C010A-70JC datasheet, AT29C010A-70JC pinout, AT29C010A-70JC application, or AT29C010A-70JC equivalent, this page provides verified technical context, pin-level design meaning, real-world use cases in boot code storage and firmware update, and validated alternative options for legacy system maintenance and industrial controller upgrades.
Technical Context
The AT29C010A-70JC implements a sector-based Flash architecture with 1024 × 128-byte sectors, internal address/data latches for full-sector loading, and automatic erase-before-program sequencing controlled by an on-chip timer. Its dual-line chip enable (CE) and output enable (OE) logic enables bus contention avoidance during mixed read/program operations.
It supports three distinct operational modes: standard EPROM-like read (CE↓, OE↓, WE↑), byte-load programming (CE↓/WE↓ + OE↑), and software-controlled protection/identification via specific address/data command sequences (e.g., 5555h/2AAAh). Toggle-bit (I/O6) and DATA polling (I/O7) provide real-time program completion detection without external timing dependencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - directly maps to 128KB of firmware or configuration storage space. |
| Read Access Time | 70 ns - enables direct execution from flash (XIP) in 10–14 MHz microcontroller buses without wait states. |
| Sector Program Time | 10 ms per 128-byte sector - defines minimum firmware update granularity and worst-case field upgrade latency. |
| VCC Supply | Single 5V ± 10% - eliminates need for charge pumps or auxiliary voltage rails, simplifying power design in legacy 5V systems. |
| Endurance | >10,000 program/erase cycles per sector - supports field firmware updates over 5+ years in industrial controllers with quarterly updates. |
| Standby Current | 100 µA (CMOS, commercial temp) - enables low-power sleep mode in battery-backed embedded devices. |
| Operating Temp | -40°C to +85°C (industrial grade, per -JI/-JI suffix) - qualified for deployment in motor drives, PLCs, and outdoor telecom equipment. |
Pinout & Package
AT29C010A-70JC is packaged in a 32-lead Plastic J-Leaded Chip Carrier (PLCC, package code 32J), compliant with JEDEC MS-016 Variation AE. Pin 1 is marked by a corner notch; leads are arranged in a square 1.27 mm pitch grid.
| 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 (0–1023); no external address latching required. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit multiplexed data path: carries input data during programming, output data during read, and toggles (I/O6) or complements (I/O7) during program status polling. |
| CE | Chip Enable | Active-low device select: must be low for any operation; high state forces outputs to high-impedance, enabling multi-device bus sharing. |
| OE | Output Enable | Active-low read control: enables data output only when CE is also low; decoupled from WE to prevent accidental writes during reads. |
| WE | Write Enable | Active-low programming control: initiates byte load on falling edge; must be high during read to avoid bus contention. |
| VCC | Power Supply | +5V ±10% main supply: powers core logic and array; internal VCC sense circuitry disables programming if voltage drops below 3.8V. |
| GND | Ground | Signal and power reference plane: requires low-inductance connection to minimize noise during sector programming current spikes. |
| NC | No Connect | Unbonded pins at positions A11/A14 (PLCC top view): must remain unconnected; floating or tied to GND/VCC may cause latch-up or timing violations. |
Key Features
| Feature | Design Value |
|---|---|
| Two 8K-byte Boot Blocks with Independent Lockout | Enables secure storage of bootloader code in first/last 8KB; lockout activation prevents accidental overwrite during field firmware updates. |
| Hardware + Software Data Protection | VCC sense, 5ms power-on delay, and 3-byte unlock sequence (5555h/2AAAh/A0h) jointly eliminate spurious writes during power transients or ESD events. |
| DATA Polling & Toggle Bit Status Detection | I/O7 complement and I/O6 toggling provide asynchronous, bus-compatible program completion signaling - no external timers or interrupts needed. |
| Single-Cycle Sector Erase-and-Program | Entire 128-byte sector erased and programmed in one internal operation - eliminates need for separate erase commands and reduces firmware complexity. |
| CMOS/TTL-Compatible I/O Levels | VIH = 2.0V, VIL = 0.8V, VOH = 2.4V (IOH = −400µA) - interoperable with both legacy 5V TTL microcontrollers and modern CMOS logic families. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Boot Code |
|---|---|
|
Use Scenario: Storing ladder logic runtime and configuration parameters in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with sector-level update capability; boot block lockout secures startup initialization code against corruption. Use Value: Enables field firmware patches without replacing the entire controller board; 10,000-cycle endurance supports >10 years of scheduled updates. |
Use Scenario: Holding BIOS initialization routines and hardware abstraction layer in desktop motherboards using Intel 486/Pentium-era chipsets. IC Role / Device Role / Timing Role: Direct-mapped boot ROM replacement; 70 ns access time meets chipset timing requirements for cold boot execution. Use Value: Eliminates UV-EPROM window and eraser dependency; in-system reprogrammability allows BIOS version rollbacks during validation. |
| Telecom Line Card Configuration | Medical Device Calibration Data |
|
Use Scenario: Storing port mapping tables, protocol stacks, and DSP filter coefficients on DSLAM line cards operating in temperature-controlled central offices. IC Role / Device Role / Timing Role: Configuration memory accessed during card power-up and hot-swap reinitialization; software protection prevents misconfiguration via management interface. Use Value: 100 µA standby current extends uptime during redundant power failure; industrial temp rating ensures reliability across 24/7 operation. |
Use Scenario: Retaining sensor calibration coefficients and safety-critical diagnostic thresholds in portable ultrasound and ECG units requiring FDA traceability. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile storage; boot block lockout isolates FDA-approved calibration data from user-updatable application logic. Use Value: Hardware VCC sensing and software write lock ensure calibration integrity during battery swaps or brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-70EC | 3.3V core with 5V I/O tolerance; 70 ns access; 1 Mbit density; no boot block lockout. | Lacks dedicated boot block protection; requires level-shifting for pure 5V systems. | Prefer for new 3.3V designs with voltage translation; not drop-in for AT29C010A-70JC's 5V-native interface. |
| SST39VF010-70-4C-NHE | 3.3V supply; 70 ns access; 1 Mbit; includes single-byte programming mode and 100K endurance. | Higher endurance but incompatible VCC requirement; no hardware VCC sense for write inhibit. | Use where extended rewrite cycles are critical and 3.3V infrastructure exists; requires PCB redesign for power and I/O levels. |
Compared with AM29LV010B-70EC and SST39VF010-70-4C-NHE, the AT29C010A-70JC uniquely delivers 5V-native operation with integrated boot block lockout and hardware VCC-sense write protection-making it irreplaceable in legacy 5V industrial controllers where board-level voltage conversion or firmware security modifications are prohibited.
Availability
AT29C010A-70JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS updates, and telecom line card configuration requiring stable component supply across extended product lifecycles.
Supply support for AT29C010A-70JC 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 consumer applications.
The AT29C010A-70JC belongs to Atmel's legacy parallel-interface Flash memory product line, designed specifically for 5V embedded systems requiring in-system reprogrammability, robust data retention, and hardware-enforced write protection in harsh environments.
FAQ
What is the maximum operating temperature range for the AT29C010A-70JC?
The AT29C010A-70JC is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the Ordering Information table (page 14), where the "-JI" suffix denotes the industrial grade, and the AC/DC characteristics tables explicitly list −40°C to +85°C as the operating case temperature range. The device maintains full 70 ns read access and 10 ms sector program performance across this range.
Does the AT29C010A-70JC support byte-level programming?
No, the AT29C010A-70JC does not support true byte-level programming. It operates exclusively on a sector basis: all 128 bytes within a selected sector must be loaded before internal erase-and-program execution begins. Attempting to program only one byte leaves other bytes in that sector indeterminate, as stated in the PROGRAM section (page 3). Single-byte writes require reloading the entire sector with retained data.
How is boot block lockout enabled on the AT29C010A-70JC?
Boot block lockout is enabled via a seven-command software algorithm: load AAh to 5555h, 55h to 2AAAh, 80h to 5555h, AAh to 5555h, 55h to 2AAAh, 40h to 5555h, then 00h to 00000h (lower block) or FFh to 1FFFFh (upper block), with 20 ms pauses between final writes. This process is detailed in the Boot Block Lockout Feature Enable Algorithm (page 12).
Can the AT29C010A-70JC be used in a 3.3V system?
No, the AT29C010A-70JC requires a single 5V ±10% supply (4.5V–5.5V) and is not 3.3V-compatible. Its DC characteristics specify VCC = 5V ±10%, VIH = 2.0V minimum, and VCC sense threshold at 3.8V - operation below 4.5V risks failed programming or data corruption. For 3.3V systems, consider AM29LV010B or SST39VF010 instead.
What packaging options exist for the AT29C010A-70JC?
The AT29C010A-70JC is supplied exclusively in the 32-lead Plastic J-Leaded Chip Carrier (PLCC) package, identified by the "J" suffix in the ordering code and "32J" in the Package Type table (page 14). Other variants like AT29C010A-70PC (PDIP) and AT29C010A-70TC (TSOP) exist, but the -70JC designation unambiguously specifies the PLCC variant with industrial temperature rating.
AT29C010A-70JC 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:
- 70 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-70JC FAQ
1.How can I place an order for AT29C010A-70JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-70JC 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-70JC reliable?
The price and inventory of AT29C010A-70JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-70JC is usually 5 days.
3.What payment methods are accepted for AT29C010A-70JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-70JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C010A-70JC?
AT29C010A-70JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-70JC 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-70JC?
For technical support, including AT29C010A-70JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-70JC requirements.
6.How does Aetrix verify that AT29C010A-70JC is sourced from the original manufacturer or authorized distributors?
All AT29C010A-70JC 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-70JC meets industry standards.
7.What is the process for return or replacement of AT29C010A-70JC?
All AT29C010A-70JC units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-70JC, 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-70JC part is unused and in its original packaging.
Return procedure for AT29C010A-70JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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