My Inquiry
My Account
Microchip Technology AT29LV512-12TU-T
- Part No.:
- AT29LV512-12TU-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29LV512-12TU-T.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,330
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT29LV512-12TU-T from Atmel is a 512 Kbit (64K × 8) 3.3 V-only in-system Flash memory with 120 ns read access time, 20 ms max sector program cycle time, and 512 independent 128-byte sectors. It supports software-controlled sector erase-and-program operations without high-voltage programming, and delivers 15 mA active current and 50 µA CMOS standby current for embedded microcontroller boot code storage.
For engineers reviewing the AT29LV512-12TU-T datasheet, AT29LV512-12TU-T pinout, AT29LV512-12TU-T application, or AT29LV512-12TU-T equivalent, key selection criteria include industrial temperature support (–40°C to +85°C), TSOP-32 package compatibility, DATA polling and toggle-bit program status detection, and software data protection requiring three-byte unlock sequences before sector reprogramming.
Technical Context
The AT29LV512-12TU-T implements a sector-based Flash architecture where each of the 512 sectors (128 bytes each) is independently erasable and programmable. Programming requires no external high voltage-only 3.3 V ±0.3 V supply-and uses internal timers and latches to capture full 128-byte sector data at microprocessor speed before initiating automatic erase-and-program.
It features dual program status detection: DATA polling on I/O7 (complement-to-data during programming, true data upon completion) and toggle-bit behavior on I/O6 (toggling during operation, stable upon completion). Input levels tolerate 0–5.5 V on address/control pins while I/O pins are limited to 0–3.6 V, enabling mixed-voltage system interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), sufficient for firmware images in 8-bit microcontrollers |
| Read Access Time | 120 ns - enables direct execution from Flash in timing-critical boot sequences |
| Sector Program Time | 20 ms max - defines minimum delay between sector writes in field-upgrade routines |
| Endurance | >10,000 write/erase cycles per sector - supports frequent firmware updates in industrial controllers |
| VCC Supply Range | 3.0 V to 3.6 V - compatible with standard 3.3 V logic rails without level shifting |
| Standby Current | 50 µA CMOS - enables low-power sleep modes in battery-backed systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded applications |
Pinout & Package
AT29LV512-12TU-T is packaged in a 32-lead Thin Small Outline Package (TSOP Type I), 8 mm × 20 mm footprint, compliant with JEDEC MO-142 BD. Pin 1 identifier located at top-left corner; leads have 0.50 mm pitch and 0.10 mm max coplanarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus; A7–A15 select sector, A0–A6 select byte within 128-byte sector |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; I/O7 used for DATA polling, I/O6 for toggle-bit status |
| CE | Chip Enable | Active-low chip select; must be low for read/write; inhibits programming when high |
| OE | Output Enable | Active-low output control; high-Z state prevents bus contention during standby |
| WE | Write Enable | Active-low write strobe; controls byte load timing and initiates sector programming |
| VCC | Power Supply | 3.0–3.6 V only; internal VCC sense disables programming if below 1.8 V |
| GND | Ground Reference | Signal and power return; decoupling required near VCC pin for noise immunity |
| NC | No Connect | Two unconnected pins (positions 15 and 16 in TSOP layout); must remain floating |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (AAh→55h→A0h) required before every sector program - prevents accidental firmware corruption |
| Internal Sector Latching | Full 128-byte sector data captured at microprocessor speed before erase - frees address/data bus for concurrent operations |
| DATA Polling & Toggle Bit | Dual, hardware-verified program status detection via I/O7 and I/O6 - eliminates need for fixed delays or external timers |
| Hardware Program Inhibit | VCC sense, 10 ms power-on delay, OE/CE/WE logic-level guardrails, and 15 ns noise filtering - robust against supply transients and EMI |
| Green Packaging | Pb/Halide-free TSOP-32 - meets RoHS Directive 2011/65/EU and JESD204B environmental compliance |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
Use Scenario: Storing and updating firmware in programmable logic controllers operating continuously in factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing deterministic 120 ns read access for fast MCU startup and reliable sector-based field upgrades. Use Value: 10,000-cycle endurance and –40°C to +85°C operation ensure long-term reliability without recalibration or replacement. |
Use Scenario: Holding certified bootloader and safety-critical initialization code in portable diagnostic equipment requiring traceable firmware revisions. IC Role / Device Role / Timing Role: Secure, software-protected Flash memory enabling authenticated firmware updates via DATA polling–confirmed sector writes. Use Value: Software data protection prevents unauthorized modification; green packaging satisfies medical regulatory material restrictions. |
| Telecom Edge Node Configuration | Automotive Body Control Module |
Use Scenario: Storing configuration tables and protocol stacks in remote radio units exposed to thermal cycling and electrical noise. IC Role / Device Role / Timing Role: Electrically robust Flash with 5.5 V-tolerant control inputs and 15 ns noise filtering on WE/CE pins. Use Value: Tolerance to mixed-voltage signaling simplifies interface with legacy 5 V management ICs while maintaining 3.3 V core operation. |
Use Scenario: Retaining calibration data and feature-enable bits across ignition cycles in body control modules with constrained PCB space. IC Role / Device Role / Timing Role: Compact TSOP-32 Flash memory supporting fast read access and low 50 µA standby current during vehicle sleep mode. Use Value: Minimal quiescent draw extends battery life; sector granularity allows selective updates without full memory erase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF512-70-4C-NHE | 70 ns read access, 3.0–3.6 V supply, 512 Kbit density, same TSOP-32 package | Higher speed but lacks DATA polling; uses Ready/Busy pin instead | Preferred when faster read timing is critical and system design accommodates dedicated status pin routing |
| MX29LV512CTTI-12G | 120 ns read, 3.0–3.6 V, 512 Kbit, TSOP-32, supports CFI query mode | Includes Common Flash Interface for auto-detection; toggle-bit only (no DATA polling) | Chosen when firmware loader requires standardized CFI identification and unified driver support across multiple densities |
Compared with AT29LV512-12TU-T, SST39VF512 offers faster reads but removes DATA polling flexibility, while MX29LV512CTTI-12G adds CFI compatibility at the cost of losing dual-status verification-making AT29LV512-12TU-T optimal for systems prioritizing robust, pin-efficient status feedback without extra signal routing.
Availability
AT29LV512-12TU-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, and telecom edge node configuration requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for AT29LV512-12TU-T 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 ICs for embedded systems.
The AT29LV512 product line was designed for in-system programmable nonvolatile storage in resource-constrained 8-bit and 16-bit microcontroller platforms, emphasizing low-voltage operation, sector-level update flexibility, and industrial reliability.
FAQ
What is the correct power-up sequence for AT29LV512-12TU-T?
The AT29LV512-12TU-T requires a minimum 20 ms delay after VCC reaches its specified value (3.0–3.6 V) before any operational mode begins. This ensures internal circuitry stabilizes and prevents spurious commands during power ramp. No external reset signal is needed-timing compliance alone guarantees safe initialization of AT29LV512-12TU-T.
How does software data protection work in AT29LV512-12TU-T?
AT29LV512-12TU-T requires a precise three-byte unlock sequence-writing AAh to address 5555h, then 55h to address 2AAAh, then A0h to address 5555h-before any sector program operation. This sequence must be repeated before each sector write. Power transitions do not reset the protection state, ensuring AT29LV512-12TU-T remains safeguarded during brownout conditions.
Can AT29LV512-12TU-T be used in a 5 V system?
AT29LV512-12TU-T supports 0–5.5 V input voltage on address and control pins (A0–A15, CE, OE, WE), making it compatible with 5 V microcontrollers-but I/O0–I/O7 pins are strictly limited to 0–3.6 V. Therefore, AT29LV512-12TU-T can interface with 5 V logic only if bidirectional level translation is applied to the data bus; direct connection risks damage.
What is the difference between DATA polling and toggle-bit detection in AT29LV512-12TU-T?
DATA polling monitors I/O7: during programming it returns the complement of the last loaded byte, switching to true data upon completion. Toggle-bit monitors I/O6: it toggles between 0 and 1 during programming and stops toggling when complete. AT29LV512-12TU-T supports both simultaneously-providing redundancy and flexibility for different host controller architectures without requiring additional pins.
Is AT29LV512-12TU-T still recommended for new designs?
No-Atmel explicitly labels AT29LV512 as "Not Recommended for New Design" in its official documentation. While AT29LV512-12TU-T remains available and supported for legacy production and repair, new designs should consider modern alternatives such as Microchip's SST26VF032B or Adesto AT25SF041, which offer enhanced security, faster performance, and extended lifecycle assurance. AT29LV512-12TU-T continues to ship under existing product change notifications.
AT29LV512-12TU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ms
- Access Time:
- 120 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29LV512-12TU-T FAQ
1.How can I place an order for AT29LV512-12TU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV512-12TU-T 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 AT29LV512-12TU-T reliable?
The price and inventory of AT29LV512-12TU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV512-12TU-T is usually 5 days.
3.What payment methods are accepted for AT29LV512-12TU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV512-12TU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV512-12TU-T?
AT29LV512-12TU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV512-12TU-T 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 AT29LV512-12TU-T?
For technical support, including AT29LV512-12TU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV512-12TU-T requirements.
6.How does Aetrix verify that AT29LV512-12TU-T is sourced from the original manufacturer or authorized distributors?
All AT29LV512-12TU-T 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 AT29LV512-12TU-T meets industry standards.
7.What is the process for return or replacement of AT29LV512-12TU-T?
All AT29LV512-12TU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV512-12TU-T, 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 AT29LV512-12TU-T part is unused and in its original packaging.
Return procedure for AT29LV512-12TU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT29LV512-12TU-T Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
