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Microchip Technology AT29C010A-70TC
- Part No.:
- AT29C010A-70TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29C010A-70TC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,343
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Product details
Overview
AT29C010A-70TC from Atmel is a 5V-only, 1 Mbit (128K × 8) Flash memory IC used for nonvolatile program/data storage in embedded boot and firmware applications. It delivers 70 ns read access time, supports sector-based reprogramming with 1024 × 128-byte sectors, includes two 8K-byte boot blocks with independent lockout, and operates across commercial temperature range (0°C to 70°C) in a 32-lead TSOP package.
For engineers reviewing the AT29C010A-70TC datasheet, AT29C010A-70TC pinout, AT29C010A-70TC application, or AT29C010A-70TC equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply-ready procurement details - all grounded in Atmel's official documentation Rev. 0394F–FLASH–02/03.
Technical Context
The AT29C010A-70TC implements in-system programmability via sector erase-and-program cycles without high-voltage programming supplies. Its architecture latches 128 bytes per sector internally during byte-load sequences, freeing the address/data bus for concurrent operations while the internal timer manages erase and write phases.
It features dual hardware/software data protection: VCC sense (<3.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and a three-byte software unlock sequence (AAh/55h/A0h) required before any sector program. Boot block lockout is enabled by a seven-command algorithm and disables chip erase when active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), enabling full BIOS or bootloader storage in single-package footprint |
| Read Access Time | 70 ns - meets timing requirements for 14 MHz Z80, 8051, and 68K-based systems without wait states |
| Sector Size | 128 bytes - allows fine-grained firmware updates without erasing unrelated code or configuration data |
| Program Cycle Time | 10 ms per sector - enables predictable field-upgrade latency with deterministic worst-case timing |
| Endurance | >10,000 write/erase cycles per sector - supports long-life industrial control firmware revision cycles |
| Supply Voltage | 5 V ± 5% - compatible with legacy 5V logic rails and eliminates need for auxiliary voltage regulators |
| Standby Current | 100 µA (CMOS) - suitable for low-power modes in battery-backed or energy-constrained embedded systems |
Pinout & Package
AT29C010A-70TC is housed in a 32-lead Thin Small Outline Package (TSOP, Type I, 8 × 20 mm, JEDEC MO-142 BD), pin-compatible with other 32T variants in the AT29C010A family. Pin 1 identifier is marked by a beveled corner on the top-left edge.
| 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 |
| CE | Chip Enable | Active-low chip select; must be low for read/program; high forces outputs to high-Z and inhibits programming |
| OE | Output Enable | Active-low output control; low enables data output during read; high disables outputs and enables byte loading |
| WE | Write Enable | Active-low write strobe; falling edge latches address/data during byte load; controls sector programming initiation |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit CMOS/TTL-compatible data path; carries input data during programming and output data during read |
| NC | No Connect | Two unconnected pins (pins 6 and 9 in TSOP top view); must remain floating - no external tie required |
| VCC | Power Supply | +5 V ± 5% main supply; powers core logic and I/O buffers; requires local 0.1 µF decoupling |
| GND | Ground | Signal and power reference plane; pin 23 in TSOP; must be low-inductance connection to system ground |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Data Protection | VCC sense, 5 ms power-on delay, and noise filtering prevent accidental writes during brown-out or EMI events |
| Software Data Protection | Three-byte unlock sequence (5555h/2AAAh/5555h + A0h) required before each sector program - prevents rogue firmware updates |
| Boot Block Lockout | Independent enable/disable for lower (0x0000–0x1FFF) and upper (0x1E000–0x1FFFF) 8K-byte blocks - secures boot code against corruption |
| Data Polling & Toggle Bit | I/O7 complement polling and I/O6 toggling provide two independent, bus-compatible methods to detect program completion without timers |
| Single 5V Operation | Eliminates need for +12 V or +21 V programming supplies - simplifies power architecture and reduces BOM cost |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Replacement |
|---|---|
Use Scenario: Storing ladder logic firmware and I/O configuration tables in programmable logic controllers requiring field updates without hardware replacement. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with sector-level reprogrammability and hardware lockout to prevent runtime corruption during power cycling. Use Value: Enables remote firmware patching over RS-485 while preserving critical boot code in protected 8K boot blocks. |
Use Scenario: Replacing obsolete 27C010 EPROMs in vintage PC motherboards where socket compatibility and 5V-only operation are mandatory. IC Role / Device Role / Timing Role: Drop-in Flash ROM replacement with identical 32-pin TSOP footprint and 70 ns access matching original EPROM timing budgets. Use Value: Eliminates UV-eraser dependency and supports in-circuit reprogramming during BIOS development and validation. |
| Embedded Network Router Bootloader | Medical Device Configuration Memory |
Use Scenario: Holding secure bootloader code that validates signed firmware images before execution in Ethernet/Wi-Fi routers. IC Role / Device Role / Timing Role: Read-only execution source during cold boot; boot block lockout ensures immutable first-stage loader integrity. Use Value: Prevents unauthorized bootloader modification via physical interface - satisfies IEC 62304 Class C security requirements. |
Use Scenario: Retaining calibrated sensor offsets, user preferences, and audit logs in portable diagnostic equipment with infrequent but critical field updates. IC Role / Device Role / Timing Role: Low-power, high-reliability nonvolatile storage; 100 µA standby current extends battery life between recalibrations. Use Value: Guarantees >10,000 update cycles over 10+ year device lifetime without wear leveling overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-70SC | 3.3 V core with 5 V I/O tolerance; 70 ns access; 1 Mbit; same 32-pin SOIC/TSOP footprint | Requires level-shifting or mixed-voltage board design; lacks boot block lockout and software protection | Choose when migrating to 3.3 V systems and external protection logic is acceptable |
| MX29LV160BTC-70G | 3.3 V only; 16 Mbit density; 70 ns access; CFI-compliant; 48-pin TSOP | Higher pin count and voltage incompatibility preclude direct replacement; supports JEDEC-standard command sets | Choose for new designs needing larger capacity and standardized flash interfaces - not a drop-in substitute |
Compared with AM29LV010B-70SC and MX29LV160BTC-70G, the AT29C010A-70TC uniquely delivers 5V-only operation with integrated boot block lockout and software data protection - making it irreplaceable in legacy 5V systems where firmware integrity and pin-level compatibility are non-negotiable.
Availability
AT29C010A-70TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS replacement, and embedded network router bootloader applications requiring stable component supply and long-term lifecycle support.
Supply support for AT29C010A-70TC 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.
The AT29C010A-70TC belongs to Atmel's legacy parallel-interface Flash memory product line, designed specifically for 5V embedded systems requiring in-system reprogrammability, boot code security, and EPROM drop-in compatibility.
FAQ
What is the maximum operating temperature range for the AT29C010A-70TC?
The AT29C010A-70TC is rated for commercial temperature operation from 0°C to 70°C. This is explicitly defined in the Ordering Information table (page 14) and confirmed in the DC and AC Operating Range section (page 5) of the official datasheet Rev. 0394F–FLASH–02/03. Industrial-grade variants (e.g., AT29C010A-70TI) support –40°C to +85°C, but the -70TC suffix denotes the commercial version.
Does the AT29C010A-70TC require high-voltage programming signals?
No, the AT29C010A-70TC does not require high-voltage programming signals. As stated in the Description section (page 2), it is a "5-volt-only in-system Flash programmable" device. Programming is initiated using standard 5 V logic levels and specific software command sequences (e.g., AAh/55h/A0h), eliminating the need for +12 V or +21 V supplies commonly used in older EPROMs.
How many sectors does the AT29C010A-70TC have, and what is the size of each sector?
The AT29C010A-70TC contains 1024 sectors, each 128 bytes in size. This is directly specified in the Features list (page 1) and reinforced in the Device Operation section (page 3), which states: "Reprogramming the AT29C010A is performed on a sector basis; 128 bytes of data are loaded into the device and then simultaneously programmed." Total memory (131,072 bytes) divided by 128 equals exactly 1024 sectors.
Can the boot blocks of the AT29C010A-70TC be independently locked?
Yes, the AT29C010A-70TC provides independent programming lockout for its two 8K-byte boot blocks - one at the lowest addresses (0x0000–0x1FFF) and one at the highest (0x1E000–0x1FFFF). The Boot Block Lockout Feature Enable Algorithm (page 12) confirms separate activation for each block using distinct address writes (00000H for lower, 1FFFFH for upper), and the datasheet explicitly states the feature "can be set independently for either block."
What methods does the AT29C010A-70TC provide to detect the end of a program cycle?
The AT29C010A-70TC provides two hardware-confirmed methods: DATA polling (monitoring complement state on I/O7) and the Toggle Bit (observing toggling on I/O6). Both are documented in dedicated sections (pages 4–5 and 11), with waveforms and timing specs. During programming, reading the last loaded byte returns ~data on I/O7; I/O6 toggles until completion. Neither method requires external timers or clocks.
AT29C010A-70TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- 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-TSOP
AT29C010A-70TC FAQ
1.How can I place an order for AT29C010A-70TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-70TC 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-70TC reliable?
The price and inventory of AT29C010A-70TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-70TC is usually 5 days.
3.What payment methods are accepted for AT29C010A-70TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-70TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C010A-70TC?
AT29C010A-70TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-70TC 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-70TC?
For technical support, including AT29C010A-70TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-70TC requirements.
6.How does Aetrix verify that AT29C010A-70TC is sourced from the original manufacturer or authorized distributors?
All AT29C010A-70TC 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-70TC meets industry standards.
7.What is the process for return or replacement of AT29C010A-70TC?
All AT29C010A-70TC units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-70TC, 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-70TC part is unused and in its original packaging.
Return procedure for AT29C010A-70TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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