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Microchip Technology AT29C010A-70JU
- Part No.:
- AT29C010A-70JU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29C010A-70JU.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,515
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Product details
Overview
AT29C010A-70JU from Atmel is a 1 Mbit (128K × 8) 5V-only Flash memory IC designed for in-system reprogrammability in embedded boot code storage. It delivers 70 ns read access time, supports sector-based programming of 128-byte blocks, features dual 8K-byte boot blocks with independent lockout, and operates across industrial temperature range (–40°C to +85°C).
For engineers reviewing the AT29C010A-70JU datasheet, AT29C010A-70JU pinout, AT29C010A-70JU application, or AT29C010A-70JU equivalent, key selection criteria include sector erase granularity, hardware/software data protection, DATA polling and toggle-bit program status detection, and PLCC-32 packaging for legacy board compatibility.
Technical Context
The AT29C010A-70JU implements a nonvolatile CMOS Flash architecture with internal address/data latches for 128-byte sector loading, automatic erase-and-program sequencing, and VCC-sense circuitry that inhibits programming below 3.8 V. Its dual-boot-block lockout uses seven-command software enable sequences applied to fixed addresses (00000H and 1FFFFH).
Program verification relies on two concurrent methods: DATA polling on I/O7 (complement-to-data during programming, true data upon completion) and toggle-bit monitoring on I/O6, both usable at any point during the 10 ms internal write cycle. Sector addressing uses A7–A16; byte addressing within sector uses A0–A6.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits |
| Read Access Time | 70 ns - enables direct replacement of EPROMs in high-speed microcontroller boot interfaces |
| Sector Size | 128 bytes - defines minimum erasable/programmable unit; 1024 sectors total |
| Program Cycle Time | 10 ms per sector - includes internal erase + programming; no external timing control required |
| Supply Voltage | 5 V ±5% - single-rail operation eliminates need for charge pumps or auxiliary voltages |
| Standby Current | 300 µA (industrial temp) - supports low-power hold states in battery-backed systems |
| Endurance | >10,000 write/erase cycles per sector - validated for firmware update cycles in field-deployed devices |
Pinout & Package
AT29C010A-70JU is packaged in a 32-lead Plastic J-Leaded Chip Carrier (PLCC), JEDEC MS-016 variation AE, with 1.27 mm pitch and 12.32 mm × 14.86 mm body dimensions. Pin 1 identifier is a corner chamfer.
| 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 | CMOS/TTL-compatible 8-bit data path; carries load data, polling responses (I/O7), and toggle signals (I/O6) |
| CE | Chip Enable | Active-low chip select; must be low for read, program, or byte-load operations |
| OE | Output Enable | Active-low output control; high-Z when high, enables DATA polling during programming |
| WE | Write Enable | Active-low write strobe; used with CE to latch addresses/data during byte loads and program initiation |
| VCC | Power Supply | +5 V supply; internal voltage sensing disables programming if below 3.8 V |
| GND | Ground | Reference for all inputs/outputs and internal logic; decoupling required near VCC pin |
| NC | No Connect | Two unconnected pins (PLCC positions 13 and 31); must remain floating, not tied to VCC/GND |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V Reprogramming | Eliminates need for 12 V programming supplies or external high-voltage generators |
| Dual Boot Block Lockout | Independent 8K-byte lockout for lower (0x0000–0x1FFF) and upper (0x1E000–0x1FFFF) memory regions prevents accidental overwrite of critical boot code |
| Hardware Data Protection | VCC sense, 5 ms power-on delay, noise filtering (15 ns pulse rejection), and CE/OE/WE inhibit logic prevent spurious writes during power transients or EMI events |
| DATA Polling & Toggle Bit | Real-time program status feedback via I/O7 (data complement → true data) and I/O6 (toggling → stable) enables deterministic firmware update flow without fixed timeouts |
| Software Data Protection | Three-command sequence (AAh/55h/A0h to 5555h/2AAAh/5555h) enables/disables write access globally, surviving power cycles |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded System Boot Memory |
|---|---|
Use Scenario: Storing boot loader and configuration firmware in programmable logic controllers where field updates occur infrequently but require absolute reliability. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU reset vector; provides 70 ns instruction fetch latency compatible with 12–25 MHz microcontrollers. Use Value: Dual boot block lockout ensures primary and backup boot images remain protected during partial firmware upgrades, reducing risk of bricking deployed units. | Use Scenario: Replacing UV-erasable EPROMs in legacy medical instrumentation requiring long-term firmware stability and occasional calibration updates. IC Role / Device Role / Timing Role: Direct drop-in replacement for 27C010 EPROMs; shares identical pinout, timing, and 5 V interface while enabling in-circuit reprogramming without socket removal. Use Value: Eliminates need for EPROM programmers and UV erasers, cutting maintenance downtime and enabling remote calibration patch deployment via serial interface. |
| Automotive Diagnostic Tool Memory | Point-of-Sale Terminal Code Storage |
Use Scenario: Holding diagnostic protocol stacks and vehicle-specific parameter tables in handheld OBD-II scanners operating across automotive temperature ranges. IC Role / Device Role / Timing Role: Industrial-grade Flash memory interfaced to 8-bit/16-bit MCUs; withstands –40°C to +85°C ambient with <300 µA standby current for battery-powered operation. Use Value: Hardware data protection prevents corruption during vehicle ignition transients, while 10,000-cycle endurance supports multi-year tool lifecycle with periodic software updates. | Use Scenario: Storing payment application firmware and encryption keys in EMV-compliant retail terminals where tamper resistance and update integrity are critical. IC Role / Device Role / Timing Role: Secure code storage with software data protection enabled; requires three-command unlock before any sector write, preventing unauthorized firmware modification. Use Value: Combines lockout for boot sectors (holding secure boot ROM) with programmable user sectors, enabling PCI-DSS-aligned firmware update workflows without exposing root keys. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-70JC | 3 V core with 5 V tolerant I/O; 70 ns read; 1 Mbit; 64 Kbyte uniform sectors | Lacks boot-block lockout; uses different command set; requires 3 V supply | Choose for lower active power or migration to 3 V systems; verify command compatibility and sector management in firmware |
| MX29LV160BTC-70G | 16 Mbit density; 70 ns read; 16 Kbyte/64 Kbyte boot sectors; 3 V operation | Higher density and different boot sector layout; no 5 V-only option; requires voltage translation for 5 V buses | Choose when scaling firmware size beyond 1 Mbit or consolidating multiple memories; confirm PCB layout supports TSOP-48 footprint |
Compared with AT29C010A-70JU, AM29LV010B-70JC offers lower voltage operation but removes boot-block lockout and changes command protocols, while MX29LV160BTC-70G increases capacity and sector flexibility at the cost of 5 V compatibility and PLCC packaging - making AT29C010A-70JU uniquely suited for legacy 5 V, space-constrained, boot-critical designs.
Availability
AT29C010A-70JU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy embedded system boot memory, and automotive diagnostic tool memory requiring stable component supply and long-lifecycle support.
Supply support for AT29C010A-70JU 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, specialized in high-reliability nonvolatile memory and microcontroller solutions for industrial and embedded markets.
The AT29C010A product line was engineered for 5 V in-system programmable Flash replacement of EPROMs in cost-sensitive, temperature-stressed applications where boot code integrity and field upgrade capability were essential.
FAQ
What is the maximum operating temperature range for the AT29C010A-70JU?
The AT29C010A-70JU is rated for industrial temperature operation from –40°C to +85°C. This range is confirmed in the DC and AC Operating Range section of the datasheet and applies specifically to the -70JU variant with PLCC packaging. The device maintains full specification compliance-including 70 ns read access and 10 ms sector programming-across this entire range.
Does the AT29C010A-70JU support true 5 V-only programming without external high voltage?
Yes, the AT29C010A-70JU supports true 5 V-only programming: no external 12 V supply or charge pump is required. Programming is initiated using standard 5 V logic levels applied to CE, WE, and OE, with internal circuitry handling erase and program voltage generation. This is explicitly stated in the Features list and Device Operation section of the datasheet.
How does the boot block lockout feature work on the AT29C010A-70JU?
The AT29C010A-70JU contains two independent 8K-byte boot blocks (lower: 0x0000–0x1FFF; upper: 0x1E000–0x1FFFF). Lockout is enabled via a seven-command software sequence written to specific addresses. Once activated, programming and erasure of the locked block are permanently disabled-even chip erase is inhibited-and the lock state persists through power cycles.
Can the AT29C010A-70JU be used as a direct replacement for the 27C010 EPROM?
Yes, the AT29C010A-70JU is designed as a functional and pin-compatible replacement for the 27C010 EPROM. It matches the 32-pin PLCC package, 5 V supply, and read interface timing (70 ns access), while adding in-system reprogrammability. No PCB changes are required, though firmware must implement sector-based write algorithms instead of byte-wise EPROM programming.
What methods does the AT29C010A-70JU provide to detect program completion?
The AT29C010A-70JU provides two hardware-verified methods: DATA polling on I/O7 (returns complement of loaded data during programming, then true data upon completion) and toggle-bit detection on I/O6 (toggles between 0/1 during programming, stabilizes when complete). Both methods are usable at any time during the 10 ms internal cycle and do not require fixed delays.
AT29C010A-70JU 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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT29C010A-70JU FAQ
1.How can I place an order for AT29C010A-70JU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-70JU 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-70JU reliable?
The price and inventory of AT29C010A-70JU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-70JU is usually 5 days.
3.What payment methods are accepted for AT29C010A-70JU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-70JU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C010A-70JU?
AT29C010A-70JU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-70JU 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-70JU?
For technical support, including AT29C010A-70JU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-70JU requirements.
6.How does Aetrix verify that AT29C010A-70JU is sourced from the original manufacturer or authorized distributors?
All AT29C010A-70JU 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-70JU meets industry standards.
7.What is the process for return or replacement of AT29C010A-70JU?
All AT29C010A-70JU units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-70JU, 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-70JU part is unused and in its original packaging.
Return procedure for AT29C010A-70JU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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