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Microchip Technology AT29LV010A-20TC
- Part No.:
- AT29LV010A-20TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29LV010A-20TC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,709
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Product details
Overview
AT29LV010A-20TC from Atmel is a 1 Mbit (131,072 × 8) 3.3 V-only Flash memory IC organized in 1024 sectors of 128 bytes each, featuring sector erase/program, two lockable 8 KB boot blocks, and 200 ns read access time. It supports in-system reprogramming via software command sequences and operates across commercial temperature range (0°C to 70°C) in a 32-lead TSOP package.
For engineers reviewing the AT29LV010A-20TC datasheet, AT29LV010A-20TC pinout, AT29LV010A-20TC application, or AT29LV010A-20TC equivalent, key selection criteria include sector-based programming timing (20 ms), DATA polling/toggle-bit program status detection, 3.3 V-only operation with TTL/CMOS I/O compatibility, and boot block lockout for firmware protection in embedded boot loaders.
Technical Context
The AT29LV010A-20TC implements a sector-erase architecture where each 128-byte sector is erased and programmed in a single internal cycle, eliminating need for external high-voltage programming. Address latching occurs on falling CE or WE edge, with data latched on subsequent rising edge-enabling bus release during byte loading.
It integrates hardware protections including VCC sense (<1.8 V inhibit), 10 ms power-on delay, noise filtering (<15 ns pulses rejected), and dual-line control (CE/OE) to prevent bus contention. Boot block lockout is activated via seven-command software sequence and disables chip erase when enabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), sufficient for small firmware images or configuration storage |
| Read Access Time | 200 ns max - defines minimum CPU wait states for direct memory-mapped access |
| Supply Voltage | 3.3 V ± 0.3 V - eliminates need for separate 5 V rail in modern 3.3 V systems |
| Active Current | 15 mA at 5 MHz - enables low-power operation in battery-backed or portable designs |
| Standby Current | 40 µA CMOS - supports ultra-low-power sleep modes without external power gating |
| Sector Size | 128 bytes - balances granularity for partial updates against overhead of sector management |
| Endurance | >10,000 write/erase cycles per sector - supports field firmware updates over product lifetime |
Pinout & Package
AT29LV010A-20TC is housed in a 32-lead Thin Small Outline Package (TSOP, Type 1), measuring 20 mm × 8 mm, compliant with JEDEC MO-142 BD. Pin 1 is marked by a beveled corner; package is lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 131,072-byte addressing; A7–A16 select sector, A0–A6 select byte within sector |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface compatible with 3.3 V TTL/CMOS logic levels; supports DATA polling on I/O7 and toggle-bit detection on I/O6 |
| CE | Chip Enable | Active-low chip select; must be low for read/write; high puts device in standby (40 µA) |
| OE | Output Enable | Active-low output control; used with CE to gate data outputs and avoid bus contention |
| WE | Write Enable | Active-low write strobe; controls latching of address/data during sector programming and byte load cycles |
| VCC | Power Supply | 3.3 V ± 0.3 V supply; internal voltage sensing prevents programming below 1.8 V |
| GND | Ground Reference | Signal and power ground reference for all I/O and internal circuitry |
| NC | No Connect | Two unconnected pins (A9 and one adjacent to VCC); must remain floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (AAh/55h/A0h) required before any sector programming - prevents accidental writes during power-up or noise events |
| Boot Block Lockout | Independent locking of first and last 8 KB blocks via 7-command sequence - secures bootloader code from overwrite while allowing application updates elsewhere |
| DATA Polling & Toggle Bit | I/O7 complements last loaded byte until programming completes; I/O6 toggles during operation - enables real-time status monitoring without dedicated status pins |
| Internal Program Timer | Automated erase-and-program cycle (20 ms typical) with no external timing components - simplifies host controller firmware |
| Hardware Write Inhibit | VCC sense, 10 ms power-on delay, and noise filtering eliminate need for external reset supervision during programming |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded Boot Loader |
|---|---|
Use Scenario: Storing firmware for programmable logic controllers operating in factory environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Nonvolatile storage for boot code and runtime firmware; accessed via memory-mapped bus during cold start and field updates. Use Value: 40 µA standby current extends backup battery life; industrial temp range (-40°C to +85°C) ensures reliability; sector locking protects critical startup routines. | Use Scenario: Replacing EPROMs in legacy 8/16-bit microcontroller systems requiring in-circuit reprogramming without UV erasers. IC Role / Device Role / Timing Role: Drop-in Flash replacement for 27C010 EPROM; emulates EPROM read behavior while enabling field updates via WE/CE-controlled byte loads. Use Value: 3.3 V-only operation eliminates level-shifting; 200 ns access matches EPROM timing; software lockout preserves boot vector integrity. |
| Medical Device Configuration Memory | Point-of-Sale Terminal Parameter Storage |
Use Scenario: Holding calibration tables, user preferences, and safety-critical configuration data in Class II medical instruments with long service life. IC Role / Device Role / Timing Role: Secure nonvolatile parameter store; accessed during initialization and updated only during maintenance mode with authenticated commands. Use Value: >10,000 endurance cycles support years of recalibration; boot block lockout prevents corruption of FDA-mandated startup parameters. | Use Scenario: Storing localized language packs, tax tables, and peripheral driver configurations in retail terminals deployed globally. IC Role / Device Role / Timing Role: Field-upgradable firmware partition; updated via serial host interface using sector-by-sector programming. Use Value: 128-byte sector granularity allows precise patching without full image reload; DATA polling enables deterministic update completion detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29BV010A-20TC | Successor device with improved reliability, same pinout and sector structure, but rated for 100,000 endurance cycles and enhanced data retention | Preferred for new designs requiring longer field life or higher write-cycle margins | Select AT29BV010A-20TC if designing new products; AT29LV010A-20TC remains valid for legacy repair or continuity builds |
| SST39VF010-20-4C-NHE | 3.3 V Flash with 200 ns access, 1 Mbit density, and similar sector architecture but uses different unlock sequence (5555h/2AAAh) and lacks boot block lockout | Suitable where boot protection is not required and SST's faster toggle-bit response is beneficial | Choose SST39VF010-20-4C-NHE only if existing firmware already implements SST command set and boot security is handled externally |
Compared with AT29LV010A-20TC, AT29BV010A-20TC offers 10× higher endurance and extended data retention without layout changes, while SST39VF010-20-4C-NHE provides comparable speed and voltage but requires firmware adaptation and omits boot block security-making AT29LV010A-20TC optimal for legacy systems needing proven, lockable Flash with minimal integration risk.
Availability
AT29LV010A-20TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy embedded boot loader upgrades, and medical device configuration memory requiring stable component supply and long-term obsolescence management.
Supply support for AT29LV010A-20TC 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 semiconductor manufacturer specializing in microcontrollers, Flash memory, and secure authentication devices.
The AT29LV010A belongs to Atmel's legacy low-voltage Flash memory product line, designed specifically for 3.3 V embedded systems requiring in-system programmability, sector-level flexibility, and robust boot code protection.
FAQ
What is the maximum read access time specified for the AT29LV010A-20TC?
The AT29LV010A-20TC has a maximum read access time (tACC) of 200 ns, as indicated by the "-20" suffix in its part number. This value is guaranteed across the commercial temperature range (0°C to 70°C) at VCC = 3.3 V ± 0.3 V. The AT29LV010A-20TC meets this specification under standard AC test conditions with CL = 5 pF and applies to both PLCC and TSOP packages.
Does the AT29LV010A-20TC support true 3.3 V-only operation for both read and write functions?
Yes, the AT29LV010A-20TC performs all read and write operations using only a 3.3 V supply - no 5 V or 12 V programming voltage is required. Its software data protection scheme (AAh/55h/A0h unlock sequence) and internal charge pump enable sector erase and program at 3.3 V. The AT29LV010A-20TC also tolerates input voltages up to 5.5 V on address and control pins, easing interface with mixed-voltage systems.
How does the boot block lockout feature work on the AT29LV010A-20TC?
The AT29LV010A-20TC includes two independent 8 KB boot blocks - one at the lowest addresses (0x00000–0x01FFF) and one at the highest (0xFE000–0xFFFFF). Lockout is enabled via a seven-command software sequence; once activated, those blocks become permanently read-only. The AT29LV010A-20TC supports software detection of lockout status by reading addresses 0x00002 (lower block) and 0x1FFF2 (upper block), returning FFh if locked.
Can the AT29LV010A-20TC be used as a direct replacement for standard 27C010 EPROMs?
The AT29LV010A-20TC is functionally compatible with 27C010 EPROMs in read mode - identical pinout, same 1 Mbit × 8 organization, and EPROM-like access timing. However, it requires software command sequences for programming and lacks UV erasure. The AT29LV010A-20TC supports in-system reprogramming but cannot be substituted without modifying host firmware to implement unlock sequences and sector management.
What are the supported package types and temperature ranges for the AT29LV010A-20TC?
The AT29LV010A-20TC is offered exclusively in the 32-lead TSOP (Type 1, 20 mm × 8 mm) package and is rated for the commercial temperature range (0°C to 70°C). The "-20" speed grade denotes 200 ns read access; the "TC" suffix explicitly identifies the TSOP variant. Industrial-grade versions (e.g., AT29LV010A-20TI) use the same TSOP package but are qualified for -40°C to +85°C operation.
AT29LV010A-20TC 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:
- 20ms
- Access Time:
- 200 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29LV010A-20TC FAQ
1.How can I place an order for AT29LV010A-20TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV010A-20TC 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 AT29LV010A-20TC reliable?
The price and inventory of AT29LV010A-20TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV010A-20TC is usually 5 days.
3.What payment methods are accepted for AT29LV010A-20TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV010A-20TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV010A-20TC?
AT29LV010A-20TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV010A-20TC 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 AT29LV010A-20TC?
For technical support, including AT29LV010A-20TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV010A-20TC requirements.
6.How does Aetrix verify that AT29LV010A-20TC is sourced from the original manufacturer or authorized distributors?
All AT29LV010A-20TC 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 AT29LV010A-20TC meets industry standards.
7.What is the process for return or replacement of AT29LV010A-20TC?
All AT29LV010A-20TC units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV010A-20TC, 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 AT29LV010A-20TC part is unused and in its original packaging.
Return procedure for AT29LV010A-20TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT29LV010A-20TC Tags
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