My Inquiry
My Account
Microchip Technology AT49F512-70TC
- Part No.:
- AT49F512-70TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F512-70TC.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,736
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49F512-70TC from Atmel is a 512 Kbit (64K × 8) single-voltage 5V-only CMOS Flash memory IC used for nonvolatile program/data storage in embedded systems. It features 50 ns read access time, 10 µs byte programming, 10-second chip erase, 8K-byte boot block with lockout, and hardware data protection. It operates across 0°C to 70°C and is commonly deployed in firmware storage for microcontroller-based industrial controllers.
For engineers reviewing the AT49F512-70TC datasheet, AT49F512-70TC pinout, AT49F512-70TC application, or AT49F512-70TC equivalent, key selection considerations include its 5V-only operation, boot sector write lockout capability, DATA polling and toggle-bit programming status detection, and TSOP-32 package compatibility with space-constrained PCB layouts.
Technical Context
The AT49F512-70TC implements a standard parallel Flash architecture with address latching on the falling edge of CE or WE (whichever occurs last) and data latching on the rising edge (whichever occurs first). Its command register interprets six-byte software sequences-including chip erase (5555H/AAH → 2AAAH/55H → 5555H/80H → 5555H/AAH → 2AAAH/55H → 5555H/10H) and boot lockout enable (5555H/AAH → 2AAAH/55H → 5555H/80H → 5555H/AAH → 2AAAH/55H → 5555H/40H)-to control erasure, programming, and protection functions without external high-voltage circuitry.
It supports three primary operational modes: Read (CE/OE low, WE high), Byte Program (CE low, OE high, WE low), and Standby/Write Inhibit (CE high). Hardware data protection includes VCC sense (<3.8V inhibits programming), noise filtering (<15 ns pulses ignored), and dual-line control (CE/OE) to prevent bus contention during read cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), enabling full firmware image storage for mid-complexity MCUs |
| Read Access Time | 70 ns max - defines minimum CPU wait-state requirement for zero-wait-state interface at ≤14 MHz bus clock |
| Byte Programming Time | 10 µs typical - enables fast field updates with minimal system downtime |
| Chip Erase Time | 10 seconds max - allows predictable firmware reflash scheduling in production and service environments |
| Boot Block Size | 8K bytes (0000H–1FFFH) - reserves secure region for bootloader code immune to accidental overwrite |
| Operating Voltage | 5.0 V ±10% - eliminates need for dedicated programming voltage rails or charge pumps |
| Standby Current | 100 µA max (CMOS) - supports low-power sleep modes in battery-backed or energy-sensitive applications |
| Endurance | 10,000 write/erase cycles - ensures reliable field-upgrade capability over multi-year product lifecycle |
Pinout & Package
AT49F512-70TC is packaged in a 32-lead Thin Small Outline Package (TSOP), Type 1, 8 mm × 20 mm body, with gull-wing leads and JEDEC-standard pinout. The package supports surface-mount reflow assembly and offers improved thermal performance over PDIP alternatives.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus supporting full 64K-word addressing; A0 least significant bit |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel data path for read, program, and identification operations |
| CE | Chip Enable | Active-low device select; must be low for any internal operation except Product ID entry |
| OE | Output Enable | Active-low output control; used with CE to gate data onto bus during read cycles |
| WE | Write Enable | Active-low control for programming and erase command execution; latches address/data timing |
| VCC | Power Supply | +5V ±10% supply input; powers core logic and I/O buffers |
| GND | Ground Reference | Signal and power return path; decoupling required within 10 mm of VCC pin |
| NC | No Connect | Unbonded pins (positions 1, 2, 17, 31, 32 in TSOP layout); must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V Supply Operation | Eliminates need for +12V programming voltage generation, simplifying power design and reducing BOM cost |
| Hardware Boot Block Lockout | Permanently protects 8K-byte region (0000H–1FFFH) from erase/program once enabled, ensuring bootloader integrity |
| DATA Polling & Toggle Bit Status | Enables real-time, non-intrusive detection of programming/erase completion without requiring external timers or interrupts |
| VCC Sense Protection | Automatically disables programming if VCC drops below ~3.8V, preventing corrupted writes during brown-out conditions |
| Noise-Filtered Control Inputs | Rejects sub-15 ns glitches on CE/WE, improving immunity to EMI in industrial environments |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing firmware and configuration data in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Nonvolatile parallel Flash memory providing direct-mapped instruction/data storage for ARM7-based controller CPUs. Use Value: 70 ns read access enables zero-wait-state execution; boot block lockout prevents unauthorized modification of safety-critical startup routines. | Use Scenario: Holding certified bootloader code and calibration tables in Class II medical diagnostic equipment requiring regulatory traceability. IC Role / Device Role / Timing Role: Secure, field-upgradable firmware repository with hardware-enforced write protection for critical initialization code. Use Value: 10,000-cycle endurance supports multiple FDA-mandated firmware revisions; DATA polling ensures deterministic flash update timing for audit logs. |
| Telecom Base Station Configuration | Automotive Body Control Module (BCM) |
Use Scenario: Retaining radio parameter sets, encryption keys, and fail-safe configurations in outdoor telecom remote units exposed to wide temperature swings. IC Role / Device Role / Timing Role: Industrial-grade (–40°C to +85°C capable variant available) parallel Flash memory interfaced to DSP host via local bus. Use Value: 100 µA standby current extends backup battery life; hardware VCC sense prevents corruption during grid instability events. | Use Scenario: Hosting vehicle-specific calibration maps and CAN protocol stack in automotive BCMs operating under engine bay thermal stress. IC Role / Device Role / Timing Role: Automotive-qualified Flash memory (via AT49F512-70TI variant) storing EEPROM-emulated parameters accessed by 8-bit MCU. Use Value: TSOP-32 package enables compact placement near MCU; 8K boot block isolates ASAM-compliant diagnostic boot code from user-modifiable data sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV512-70PC | 48-pin PDIP; 3.3V/5V tolerant; 70 ns read; no boot block lockout feature | Lacks hardware-protected boot sector; requires external logic or software for bootloader protection | Choose when 3.3V compatibility or legacy through-hole mounting is required, but accept increased firmware security risk |
| SST39VF512-70-4C-NHE | 32-pin TSOP; 3.3V only; 70 ns read; includes 8K boot block with lockout, but uses different command set | Requires modified driver code due to SST-specific unlock sequences; not drop-in compatible | Prefer for new 3.3V designs where lower power and pinout match are priorities, provided firmware layer can accommodate command differences |
Compared with AM29LV512-70PC and SST39VF512-70-4C-NHE, the AT49F512-70TC uniquely delivers 5V-only simplicity, hardware-enforced boot block lockout using Atmel's standardized command protocol, and TSOP-32 footprint-making it optimal for cost-sensitive, space-constrained industrial controllers needing robust firmware partitioning without voltage translation.
Availability
AT49F512-70TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, and telecom base station configuration requiring stable component supply and long-term obsolescence management.
Supply support for AT49F512-70TC 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, was a leading designer of microcontrollers, Flash memory, and analog semiconductors focused on embedded control and connectivity solutions.
The AT49F512 belongs to Atmel's early-generation 5V-only parallel Flash memory product line, engineered specifically for in-system programmability and firmware storage in cost-sensitive industrial and consumer electronics where high reliability and simple 5V integration were critical.
FAQ
What is the maximum operating temperature range for the AT49F512-70TC?
The AT49F512-70TC is rated for commercial temperature operation from 0°C to +70°C. For extended temperature range applications, the industrial-grade variant AT49F512-70TI supports –40°C to +85°C and shares identical electrical specifications and pinout with the AT49F512-70TC, differing only in qualification testing and packaging marking.
Does the AT49F512-70TC require external high-voltage circuitry for programming?
No, the AT49F512-70TC does not require external high-voltage circuitry. It supports 5V-only reprogramming using standard logic-level signals and six-byte software command sequences. All programming, erasure, and protection functions-including chip erase and boot block lockout-are executed with VCC = 5V ±10%, eliminating the need for +12V generators or charge pumps in the AT49F512-70TC system design.
How is the boot block protected from accidental reprogramming in the AT49F512-70TC?
The AT49F512-70TC provides hardware-based boot block lockout via a six-byte command sequence (5555H/AAH → 2AAAH/55H → 5555H/80H → 5555H/AAH → 2AAAH/55H → 5555H/40H). Once executed, the 8K-byte region (0000H–1FFFH) becomes permanently write- and erase-protected. Software lockout detection is confirmed by reading I/O0 during Product ID mode at address 00002H.
What package type is used for the AT49F512-70TC, and what are its key mechanical dimensions?
The AT49F512-70TC uses a 32-lead Thin Small Outline Package (TSOP), Type 1, with body dimensions of 8 mm × 20 mm and gull-wing lead pitch of 0.5 mm. Its JEDEC-standard footprint (package code 32T) supports automated SMT assembly and offers superior thermal dissipation compared to PDIP variants, making it suitable for dense industrial PCB layouts.
Can the AT49F512-70TC be used as a direct replacement for EPROMs like the 27C512?
The AT49F512-70TC is functionally compatible with 27C512 EPROMs in read mode (same pinout, 5V supply, and address/data bus behavior), but differs critically in programming methodology: it requires software command sequences instead of UV erasure and high-VPP programming pulses. While hardware interface is drop-in for reads, firmware must implement Atmel-specific commands for erase/program-so it is not a true plug-and-play EPROM replacement without driver updates.
AT49F512-70TC 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:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- 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
AT49F512-70TC FAQ
1.How can I place an order for AT49F512-70TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F512-70TC 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 AT49F512-70TC reliable?
The price and inventory of AT49F512-70TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F512-70TC is usually 5 days.
3.What payment methods are accepted for AT49F512-70TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F512-70TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F512-70TC?
AT49F512-70TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F512-70TC 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 AT49F512-70TC?
For technical support, including AT49F512-70TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F512-70TC requirements.
6.How does Aetrix verify that AT49F512-70TC is sourced from the original manufacturer or authorized distributors?
All AT49F512-70TC 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 AT49F512-70TC meets industry standards.
7.What is the process for return or replacement of AT49F512-70TC?
All AT49F512-70TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49F512-70TC, 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 AT49F512-70TC part is unused and in its original packaging.
Return procedure for AT49F512-70TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F512-70TC 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…
