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Microchip Technology AT29C010A-70PC
- Part No.:
- AT29C010A-70PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT29C010A-70PC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT29C010A-70PC from Atmel is a 1 Mbit (128K × 8) 5V-only Flash memory IC used for nonvolatile code and 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-70PC datasheet, AT29C010A-70PC pinout, AT29C010A-70PC application, or AT29C010A-70PC equivalent, this page provides verified technical context, pin-level design meaning, real-world use scenarios, and validated alternative options for industrial control, legacy BIOS, and firmware update architectures requiring reliable 5V Flash with boot-block security.
Technical Context
The AT29C010A-70PC implements a sector-based Flash architecture with 1024 × 128-byte sectors, internal address/data latches for full-sector buffering, and automatic erase-then-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 functions including data protection (3-byte unlock sequence), boot block lockout (7-byte enable), and product identification (AAh/55h/90h entry). 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 firmware image storage with byte-addressable access. |
| Read Access Time | 70 ns max - enables direct execution from Flash (XIP) in 14 MHz CPU systems without wait states. |
| Sector Size | 128 bytes per sector - allows fine-grained firmware patching; 1024 sectors support modular updates without full chip erase. |
| Program Cycle Time | 10 ms per sector - deterministic erase+program duration simplifies host-side timeout handling in bootloader implementations. |
| VCC Supply | 5V ± 10% - eliminates need for dedicated programming voltage; compatible with legacy 5V logic rails and power supplies. |
| Endurance | >10,000 write/erase cycles per sector - supports field firmware upgrades over 5+ years in industrial controllers. |
| Standby Current | 100 µA (CMOS, commercial temp) - enables low-power retention in battery-backed systems during sleep modes. |
| Operating Temp | 0°C to +70°C - qualified for commercial-grade embedded applications including PC peripherals and instrumentation. |
Pinout & Package
AT29C010A-70PC uses a 32-lead Plastic Dual Inline Package (PDIP), 0.600" wide (package code 32P6), with through-hole mounting and industry-standard 2.54 mm pin pitch. Pin 1 is marked by a notch or dot at the top-left corner of the package body.
| 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 - enables precise sector targeting without external decoding. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; carries program data during byte loads and returns read data or polling status (I/O6 toggle, I/O7 complement). |
| CE | Chip Enable | Active-low global device select; when high, forces outputs to high-impedance - prevents bus conflicts during multi-device sharing. |
| OE | Output Enable | Active-low read control; must be low with CE low for valid data output - decouples memory access timing from chip selection. |
| WE | Write Enable | Active-low programming control; initiates byte load on falling edge - synchronizes data latching independent of address stability. |
| VCC | Power Supply | +5V ±10% supply; powers core logic and charge pumps - no auxiliary voltage required for programming or erase. |
| GND | Ground Reference | Signal and power return path; separates digital I/O ground from VCC return to minimize noise coupling during programming. |
| NC | No Connect | Unbonded pins (positions 3, 4, 29, 30 in PDIP) - must remain unconnected; floating NC pins do not affect operation or EMI. |
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 while allowing full reprogramming of remaining 112KB. |
| Hardware + Software Data Protection | VCC sense (<3.8V inhibit), 5ms power-on delay, and 3-byte unlock sequence (5555h/2AAAh/80h) jointly prevent spurious writes during power transients or software faults. |
| DATA Polling & Toggle Bit Detection | I/O7 complement and I/O6 toggling provide asynchronous, bus-compatible program completion signaling - eliminates need for fixed delays or external status registers. |
| Single-Cycle Sector Reprogram | Internal latching of full 128-byte sector allows host to release address/data bus after load phase - enables concurrent background processing during 10ms internal program cycle. |
| CMOS/TTL-Compatible I/O | VIH = 2.0V, VIL = 0.8V, VOH = 2.4V (IOH = −400µA) - interoperates with both 5V TTL and CMOS logic families without level-shifting circuitry. |
| 10,000+ Endurance Cycles | Validated sector-level endurance supports frequent field updates in diagnostic tools, configuration managers, and calibration storage applications. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Memory |
|---|---|
|
Use Scenario: Storing ladder logic programs and I/O configuration tables in programmable logic controllers operating in factory environments with temperature cycling and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile code storage with sector-level update capability; boot blocks hold safety-critical startup routines, protected from accidental overwrite. Use Value: Enables field-upgradable firmware without chip replacement; 70 ns access supports real-time scan-cycle execution; 100 µA standby current reduces thermal load in sealed enclosures. |
Use Scenario: Replacing UV-erasable EPROMs in desktop motherboard BIOS chips where cost-sensitive, socketed 5V Flash is required for BIOS updates via DOS utilities. IC Role / Device Role / Timing Role: Drop-in EPROM replacement with identical pinout and read protocol; boot block lockout secures critical POST and boot vector code. Use Value: Eliminates need for EPROM programmers and UV erasers; software data protection prevents corruption during power-loss events during BIOS flash operations. |
| Embedded Instrument Calibration Storage | Telecom Line Card Configuration |
|
Use Scenario: Holding calibrated sensor offset/gain coefficients and linearization tables in portable test equipment subject to periodic recalibration in metrology labs. IC Role / Device Role / Timing Role: Sector-erasable nonvolatile memory; individual 128-byte sectors store parameters for each sensor channel, updated independently. Use Value: 10,000-cycle endurance ensures >10 years of daily recalibration; DATA polling allows host MCU to resume operation immediately after write confirmation. |
Use Scenario: Storing line-specific provisioning data (framing, clock source, alarm thresholds) in T1/E1 line cards deployed in central office switching systems. IC Role / Device Role / Timing Role: Configuration memory accessed during card initialization; boot blocks hold default settings, locked to prevent runtime corruption. Use Value: Hardware VCC-sense protection prevents misconfiguration during brown-out conditions; 5V-only operation simplifies power domain design in legacy telecom chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29F010B-70JC | 48-pin PLCC; 70 ns access; requires 12V VPP for programming; no boot block lockout. | Lacks integrated software/hardware write protection and boot block security - requires external logic for safe in-system programming. | Choose only if existing PLCC footprint and 12V programming infrastructure exist; not suitable for new designs requiring robust data integrity. |
| SST39SF010-70-4C-NHE | 32-pin TSOP; 70 ns access; single 5V supply; includes command register interface and 100K endurance. | Uses different command set (e.g., 5555h/2AAAh/A0h for program); no hardware VCC-sense protection - relies solely on software locks. | Preferred for space-constrained PCBs using surface-mount TSOP; verify bootloader compatibility with SST's command protocol before migration. |
Compared with AM29F010B-70JC and SST39SF010-70-4C-NHE, the AT29C010A-70PC uniquely combines PDIP packaging, dual boot block lockout, and VCC-sense hardware protection - making it optimal for cost-sensitive, through-hole industrial designs requiring fail-safe firmware updates.
Availability
AT29C010A-70PC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS replacement, embedded instrument calibration, and telecom line card configuration requiring stable component supply across extended product lifecycles.
Supply support for AT29C010A-70PC 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, Flash memory, and secure authentication devices for industrial, automotive, and consumer applications.
The AT29C010A-70PC belongs to Atmel's early-generation 5V Flash memory product line, designed specifically for drop-in EPROM replacement and in-system programmability in cost-sensitive, 5V-centric embedded systems without requiring high-voltage programming infrastructure.
FAQ
What is the maximum operating temperature range for the AT29C010A-70PC?
The AT29C010A-70PC is rated for commercial temperature operation from 0°C to +70°C. This range is explicitly defined in the Ordering Information table for the "-70PC" suffix, which denotes the Plastic DIP package with commercial grade qualification. Industrial variants (e.g., AT29C010A-70PI) extend to −40°C to +85°C, but the -70PC variant does not support operation outside the 0°C to +70°C envelope.
Does the AT29C010A-70PC require a high-voltage programming supply?
No, the AT29C010A-70PC operates with a single 5V ±10% supply for both read and program operations. Its "5-volt Only Reprogramming" feature eliminates the need for external 12V VPP generators, distinguishing it from older Flash devices like the AM29F010B. All internal charge pumps are powered from VCC, enabling true in-system programming using standard 5V logic levels.
How is boot block protection enabled on the AT29C010A-70PC?
Boot block lockout on the AT29C010A-70PC is enabled via a 7-byte 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). Once activated, the corresponding 8K-byte block becomes permanently read-only until the device is replaced.
Can the AT29C010A-70PC be used as a direct replacement for a 27C010 EPROM?
Yes, the AT29C010A-70PC is pin-compatible and functionally compatible with the 27C010 EPROM in read mode (CE↓, OE↓, WE↑), delivering identical 70 ns access time and 128K×8 organization. However, programming requires issuing sector-based commands instead of EPROM-style byte programming, and the AT29C010A-70PC lacks UV-erasability - it must be erased electrically at the sector or chip level.
What methods does the AT29C010A-70PC provide to detect program completion?
The AT29C010A-70PC provides two hardware-verified methods: DATA polling (monitoring I/O7 - it returns complement of last loaded byte until completion, then true data) and Toggle Bit detection (monitoring I/O6 - it toggles between 0 and 1 during programming, then stabilizes). Both methods operate asynchronously and require no external clocks or timers, enabling efficient polling loops in host firmware.
AT29C010A-70PC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-DIP (0.600", 15.24mm)
- 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:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT29C010A-70PC FAQ
1.How can I place an order for AT29C010A-70PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-70PC 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-70PC reliable?
The price and inventory of AT29C010A-70PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-70PC is usually 5 days.
3.What payment methods are accepted for AT29C010A-70PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-70PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C010A-70PC?
AT29C010A-70PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-70PC 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-70PC?
For technical support, including AT29C010A-70PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-70PC requirements.
6.How does Aetrix verify that AT29C010A-70PC is sourced from the original manufacturer or authorized distributors?
All AT29C010A-70PC 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-70PC meets industry standards.
7.What is the process for return or replacement of AT29C010A-70PC?
All AT29C010A-70PC units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-70PC, 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-70PC part is unused and in its original packaging.
Return procedure for AT29C010A-70PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT29C010A-70PC Tags
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