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Microchip Technology AT29C512-15TC
- Part No.:
- AT29C512-15TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29C512-15TC.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,347
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Product details
Overview
AT29C512-15TC from Atmel is a 512 Kbit (64K × 8) 5-volt-only Flash memory IC designed for in-system reprogrammability in embedded controllers and firmware storage applications. It delivers 150 ns read access time, supports sector-based programming (512 sectors × 128 bytes), features hardware and software data protection, and operates across industrial temperature range (–40°C to +85°C).
For engineers reviewing the AT29C512-15TC datasheet, AT29C512-15TC pinout, AT29C512-15TC application, or AT29C512-15TC equivalent, key selection considerations include its TSOP-32 package, 150 ns access timing, sector erase architecture, DATA polling/Toggle bit program status detection, and compatibility with standard EPROM read protocols.
Technical Context
The AT29C512-15TC implements a sector-programmable Flash architecture where each 128-byte sector is erased and programmed in a single internal cycle. Address latching (A0–A15) and data latching (I/O0–I/O7) occur during byte load phases, decoupling bus activity from internal programming.
Its dual data protection-hardware (VCC sense, noise filtering, CE/OE/WE inhibit) and software (3-byte unlock sequence)-ensures robust write safety. Program completion is verified via I/O7 DATA polling or I/O6 Toggle bit behavior, both usable at any point during tWC = 10 ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (64K × 8 words); sufficient for boot code, configuration tables, or firmware patches in microcontroller systems. |
| Read Access Time | 150 ns max; defines minimum clock period for synchronous read interfaces and determines worst-case instruction fetch latency. |
| Supply Voltage | 5 V ± 10%; eliminates need for dedicated programming voltage rails and simplifies power design in 5 V legacy systems. |
| Program Cycle Time | 10 ms per sector; enables predictable firmware update windows and supports background programming without full system stall. |
| Endurance | >10,000 program/erase cycles per sector; suitable for field-upgradable devices requiring moderate reprogramming frequency. |
| Standby Current | 100 µA (CMOS, commercial); enables low-power sleep modes in battery-backed or energy-sensitive applications. |
| Operating Temp | –40°C to +85°C; qualified for industrial control, automotive body electronics, and outdoor instrumentation environments. |
Pinout & Package
AT29C512-15TC is housed in a 32-lead Thin Small Outline Package (TSOP, Type I, 8 × 20 mm, JEDEC MO-142 BD), pin-compatible with industry-standard 32-pin Flash memory footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus; A0–A6 select byte within 128-byte sector, A7–A15 select sector address. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; carries data during read, byte load, and software identification modes. |
| CE | Chip Enable | Active-low chip select; must be low for read, program, or identification; high disables outputs and enters standby. |
| OE | Output Enable | Active-low output control; used with CE to gate data output and prevent bus contention. |
| WE | Write Enable | Active-low write strobe; initiates byte loads and triggers internal program/erase sequences when CE is low and OE is high. |
| VCC | Power Supply | +5 V supply pin; powers core logic and memory array; internally regulated for programming operations. |
| GND | Ground | Reference return path for all signals and power; requires low-impedance connection to minimize noise coupling. |
| NC | No Connect | Unbonded pins (positions 6, 9, 10, 11 in TSOP top view); must remain unconnected on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Sector-based programming | Enables partial updates without erasing full device; reduces firmware update time and wear on unaffected sectors. |
| DATA polling & Toggle bit | Provides real-time, non-intrusive program status feedback using only I/O7 or I/O6-no external timers or interrupts required. |
| Hardware data protection | VCC sensing, 5 ms power-on delay, and noise filtering prevent spurious writes during brown-out or EMI events. |
| Software data protection | 3-byte unlock sequence (AAh/55h/A0h) prevents accidental writes; remains active across power cycles until explicitly disabled. |
| CMOS/TTL I/O compatibility | Accepts standard 5 V logic thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and drives 2.4 V min VOH at –400 µA, easing integration with diverse host controllers. |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module |
|---|---|
Use Scenario: Storing ladder logic programs and I/O mapping tables in programmable logic controllers subject to frequent field updates. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with sector-level reprogrammability and hardware write protection against electrical transients on factory floors. Use Value: Enables safe in-field firmware upgrades without removing the module; 10,000-cycle endurance supports multi-year maintenance cycles. | Use Scenario: Holding configuration data (e.g., door lock settings, mirror positions) and calibration parameters in vehicle body control units. IC Role / Device Role / Timing Role: Parameter EEPROM replacement with faster 150 ns reads and deterministic 10 ms sector writes, compatible with CAN-connected diagnostic tools. Use Value: Eliminates need for separate EEPROM; software data protection prevents corruption during ignition cycling or jump-start events. |
| Legacy Embedded System Boot Memory | Medical Device Calibration Storage |
Use Scenario: Boot ROM for 8/16-bit microcontrollers in medical infusion pumps and diagnostic analyzers requiring regulatory-compliant firmware retention. IC Role / Device Role / Timing Role: Pin-compatible EPROM drop-in replacement supporting identical read protocol but enabling field updates via JTAG or UART bootloader. Use Value: Reduces BOM count by consolidating boot code and revision history; industrial temp rating ensures reliability in sterilized enclosures. | Use Scenario: Storing sensor calibration coefficients and usage logs in portable ultrasound probes and glucose meters. IC Role / Device Role / Timing Role: Low-power nonvolatile memory with 100 µA standby current and software lock to prevent unauthorized parameter modification. Use Value: Extends battery life between charges; data protection sequence meets IEC 62304 software safety requirements for Class B devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV512-150EC | 3 V core / 5 V I/O; 150 ns access; 100,000 endurance cycles; requires VPP = 12 V for program/erase. | Designed for mixed-voltage systems; higher endurance but needs extra voltage rail and external charge pump. | Select if migrating to lower-power 3 V systems and board layout allows VPP routing. |
| MX29LV512CTTI-15G | 3 V supply only; 150 ns access; 100,000 cycles; no 5 V tolerance; uses different command set (JEDEC standard). | Not pin- or voltage-compatible; requires firmware driver rewrite and PCB redesign for 3 V operation. | Choose only for new designs targeting 3 V platforms with strict power budgets and no legacy 5 V constraints. |
Compared with AM29LV512-150EC and MX29LV512CTTI-15G, the AT29C512-15TC offers true 5 V-only operation without auxiliary voltages, making it ideal for retrofitting into existing 5 V designs-though its 10,000-cycle endurance and lack of 3 V support limit suitability for high-update-rate or next-gen low-voltage applications.
Availability
AT29C512-15TC is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, legacy embedded boot memory, and medical device calibration storage requiring stable component supply and long-lifecycle support.
Supply support for AT29C512-15TC 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.
The AT29C512 product line was engineered for cost-sensitive, 5 V-based embedded systems needing field-upgradable firmware storage without high-voltage programming infrastructure.
FAQ
What is the maximum operating temperature range for the AT29C512-15TC?
The AT29C512-15TC is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the DC and AC Operating Range table of the official datasheet (Rev. 0456F), and applies specifically to the -15TC variant with TSOP packaging. The device maintains full functionality-including 150 ns read access and 10 ms sector programming-across this full range.
Does the AT29C512-15TC require a high-voltage programming signal like older EPROMs?
No, the AT29C512-15TC does not require high-voltage programming. It operates with a single 5 V ± 10% supply for both read and program/erase functions. Programming is initiated using standard 5 V logic-level commands (e.g., AAh/55h/A0h unlock sequence), eliminating the need for external VPP generators or charge pumps-unlike UV-erasable EPROMs or early Flash devices.
How many sectors does the AT29C512-15TC contain, and what is the size of each sector?
The AT29C512-15TC contains exactly 512 sectors, each 128 bytes in size. This is explicitly stated in the Features section and reinforced in the Device Operation section, which confirms that "Reprogramming the AT29C512 is performed on a sector basis; 128 bytes of data are loaded into the device and then simultaneously programmed." Total capacity is thus 512 × 128 = 65,536 bytes (64K × 8).
Can the AT29C512-15TC be used as a direct replacement for a standard EPROM such as the 27C512?
Yes, the AT29C512-15TC is functionally and pin-compatible with the 27C512 EPROM for read operations: CE, OE, and WE control logic matches, and address/data bus behavior is identical during reads. However, write procedures differ-AT29C512-15TC requires software command sequences and sector-based programming, whereas 27C512 requires UV erasure and parallel programming. No PCB changes are needed for read-only use cases.
What methods are available to detect the end of a program cycle on the AT29C512-15TC?
The AT29C512-15TC provides two hardware-supported methods: DATA polling (monitoring complement-to-data state on I/O7) and Toggle bit detection (observing toggling on I/O6). Both are defined in the datasheet's "DATA POLLING" and "TOGGLE BIT" sections and can be initiated at any time during the 10 ms tWC window. Neither method requires external clocks or timers-only standard read accesses.
AT29C512-15TC 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:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 150 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
AT29C512-15TC FAQ
1.How can I place an order for AT29C512-15TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C512-15TC 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 AT29C512-15TC reliable?
The price and inventory of AT29C512-15TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C512-15TC is usually 5 days.
3.What payment methods are accepted for AT29C512-15TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C512-15TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C512-15TC?
AT29C512-15TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C512-15TC 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 AT29C512-15TC?
For technical support, including AT29C512-15TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C512-15TC requirements.
6.How does Aetrix verify that AT29C512-15TC is sourced from the original manufacturer or authorized distributors?
All AT29C512-15TC 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 AT29C512-15TC meets industry standards.
7.What is the process for return or replacement of AT29C512-15TC?
All AT29C512-15TC units undergo pre-shipment inspection (PSI). If there is an issue with AT29C512-15TC, 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 AT29C512-15TC part is unused and in its original packaging.
Return procedure for AT29C512-15TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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