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Microchip Technology AT29C1024-70TI
- Part No.:
- AT29C1024-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29C1024-70TI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,387
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Product details
Overview
AT29C1024-70TI from Atmel is a 5-V-only, 1 Mbit (64K × 16) Flash memory IC designed for in-system reprogrammability in embedded controllers and firmware storage applications. It delivers 70 ns read access time, 10 ms sector program cycle time, and supports hardware/software data protection across industrial temperature range (–40°C to +85°C).
For engineers reviewing the AT29C1024-70TI datasheet, AT29C1024-70TI pinout, AT29C1024-70TI application, or AT29C1024-70TI equivalent, key selection criteria include sector-based programming architecture, DATA polling and toggle-bit end-of-write detection, CMOS/TTL I/O compatibility, and dual-package availability (PLCC-44 and TSOP-48) with verified industrial-grade reliability.
Technical Context
The AT29C1024-70TI implements a sector-erase/program architecture with 512 independent 128-word sectors, each internally latched during load. Its command-set-driven operation eliminates need for external high-voltage programming supplies.
It supports three distinct operational modes: standard EPROM-like read (CE/OE low, WE high), sector word-load via WE/CE pulse sequencing (with A7–A15 defining sector address), and software-controlled chip/sector protection using 3-word unlock sequences at fixed addresses (5555H/2AAAH/A0A0H etc.).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (64K × 16 words), enabling firmware storage for mid-complexity microcontrollers |
| Read Access Time | 70 ns max - meets timing requirements for 14 MHz bus interfaces without wait states |
| Sector Program Time | 10 ms typical - enables rapid field updates of configuration or calibration data |
| VCC Supply | Single 5 V ±10% - simplifies power design by eliminating dedicated programming voltage rails |
| Endurance | >10,000 write/erase cycles per sector - supports long-life industrial logging applications |
| Standby Current | 200 µA CMOS - suitable for battery-backed systems requiring ultra-low quiescent power |
| Operating Temp | –40°C to +85°C - qualified for industrial control, automotive body electronics, and telecom infrastructure |
Pinout & Package
AT29C1024-70TI is available in two industry-standard packages: 44-lead PLCC (44J) and 48-lead TSOP (48T). Both packages support identical pin functions and electrical behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus supporting full 64K-word addressing; A7–A15 select sector during programming |
| I/O0–I/O15 | Bidirectional Data Bus | 16-bit parallel interface; supports DATA polling on I/O7/I/O15 and toggle-bit detection on I/O6/I/O14 |
| CE | Chip Enable | Active-low global enable; must be low for read, program, or identification mode entry |
| OE | Output Enable | Active-low output control; used with CE to prevent bus contention during reads |
| WE | Write Enable | Active-low control for word loading and program initiation; pulses define sector load timing |
| VCC, VSS | Power Supply | 5 V supply and ground; decoupling required within 1 cm due to fast switching transients |
| NC, DC | No Connect / Don't Connect | Unbonded pins; must remain unconnected per Atmel design rules |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V Reprogramming | Eliminates need for 12 V programming supplies, reducing BOM count and layout complexity |
| Hardware Data Protection | VCC sense (disable below 3.8 V), 5 ms power-on delay, and noise filtering prevent spurious writes during brown-out or EMI events |
| Software Data Protection | Configurable lock/unlock via 3-word command sequence (5555H/2AAAH/A0A0H), enabling secure firmware update workflows |
| DATA Polling & Toggle Bit | Dual asynchronous end-of-program detection methods allow flexible host controller integration without fixed timing delays |
| Internal Address/Data Latches | 128-word sector buffer frees system bus during internal erase/program, enabling background operations |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module |
|---|---|
Use Scenario: Storing and updating ladder logic programs and I/O mapping tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with in-system reprogrammability; 70 ns access ensures real-time scan-cycle execution. Use Value: Enables remote firmware upgrades without hardware intervention, reducing maintenance downtime and supporting version-controlled deployments. | Use Scenario: Holding configuration data (e.g., door lock settings, mirror positions, lighting profiles) in vehicle body control units subject to frequent parameter updates. IC Role / Device Role / Timing Role: Sector-erasable configuration memory; software protection prevents corruption during ignition cycling. Use Value: Supports over-the-air (OTA) personalization updates while maintaining data integrity across 10,000+ vehicle lifecycle cycles. |
| Telecom Line Card Bootloader | Medical Diagnostic Equipment Calibration |
Use Scenario: Storing boot code and protocol stacks for modular telecom line cards operating in NEBS-compliant central office environments. IC Role / Device Role / Timing Role: Primary boot memory with deterministic 70 ns read latency; industrial temp rating ensures reliability under sustained thermal load. Use Value: Guarantees fast, repeatable boot sequences and supports hot-swap firmware patching without card removal. | Use Scenario: Retaining sensor calibration coefficients and diagnostic test patterns in portable ultrasound or ECG devices requiring traceable accuracy records. IC Role / Device Role / Timing Role: Secure, endurance-rated nonvolatile storage; hardware/software protection prevents accidental overwrite during field recalibration. Use Value: Meets IEC 62304 software safety requirements by ensuring calibration data persistence across 10,000+ clinical use cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV160DB-70EI | 3.0 V core with 5 V I/O; 16 Mbit density; CFI-compliant command set; no sector latch buffering | Requires level-shifting for 5 V systems; larger capacity suits boot code + application storage | Select when migrating to lower-voltage platforms or needing >1 Mbit density with JEDEC-standard interface |
| SST39VF1601-70-4C-EKE | 3.3 V only; 16 Mbit; single-power-supply operation; faster 55 ns read; no hardware VCC sense protection | Not compatible with 5 V bus systems; lacks industrial-temp industrial-grade robustness | Choose for cost-sensitive 3.3 V designs where power efficiency outweighs legacy 5 V compatibility and ruggedness |
Compared with AM29LV160DB-70EI and SST39VF1601-70-4C-EKE, the AT29C1024-70TI provides native 5 V operation, proven industrial-temperature reliability, and integrated sector latching-making it optimal for legacy embedded systems requiring drop-in firmware storage upgrades without redesigning power or interface circuitry.
Availability
AT29C1024-70TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control modules, and telecom line card bootloader applications requiring stable component supply across extended product lifecycles.
Supply support for AT29C1024-70TI 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 security ICs for industrial, automotive, and consumer applications.
The AT29C1024-70TI belongs to Atmel's early-generation 5 V Flash memory family, engineered specifically for in-system reprogrammability in resource-constrained embedded systems where high reliability and simple 5 V integration were critical design goals.
FAQ
What is the maximum operating temperature range for the AT29C1024-70TI?
The AT29C1024-70TI is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "DC and AC Operating Range" table on page 4 of the official datasheet, and applies to both PLCC-44 (44J) and TSOP-48 (48T) package variants of the AT29C1024-70TI. The device maintains full functionality-including 70 ns read access and 10 ms sector programming-across this entire range.
Does the AT29C1024-70TI require external high-voltage programming signals?
No, the AT29C1024-70TI does not require external high-voltage programming signals. As stated in the "Features" section, it supports "5-Volt Only Reprogramming." All programming commands-including sector erase and write-are executed using standard 5 V logic levels applied to CE, WE, OE, and address/data pins. The internal charge pump generates necessary voltages, eliminating need for 12 V or other auxiliary supplies in the AT29C1024-70TI system design.
How many sectors does the AT29C1024-70TI contain, and what is the size of each sector?
The AT29C1024-70TI contains 512 sectors, each consisting of 128 words (256 bytes). This is explicitly documented in the "Features" list and confirmed in the "Description" section: "512 Sectors (128 words/sector)." Each sector can be erased and programmed independently, and the sector address is selected using address lines A7–A15 during the word-load phase of the AT29C1024-70TI programming sequence.
Can the AT29C1024-70TI be used in a 3.3 V system?
No, the AT29C1024-70TI is specified exclusively for 5 V ±10% operation and is not compatible with 3.3 V systems. Its DC characteristics-including VIH (2.0 V min), VOL (0.45 V max), and VCC standby/active current-are defined only at 5 V. Attempting to operate the AT29C1024-70TI at 3.3 V will result in unreliable reads, failed programming, or permanent damage. For 3.3 V Flash alternatives, consider Microchip's SST39VF series or Spansion's S29GL series.
What methods does the AT29C1024-70TI provide to detect completion of a program cycle?
The AT29C1024-70TI provides two hardware-confirmed methods: DATA polling (monitoring complement state on I/O7 or I/O15) and Toggle Bit detection (observing toggling on I/O6 or I/O14). Both are detailed in sections "DATA POLLING" and "TOGGLE BIT" of the datasheet. Either method may be used at any time during the 10 ms internal program cycle; no fixed timeout is required. These mechanisms are intrinsic to the AT29C1024-70TI silicon and do not rely on external timers or status registers.
AT29C1024-70TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-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:
- 64K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT29C1024-70TI FAQ
1.How can I place an order for AT29C1024-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C1024-70TI 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 AT29C1024-70TI reliable?
The price and inventory of AT29C1024-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C1024-70TI is usually 5 days.
3.What payment methods are accepted for AT29C1024-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C1024-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C1024-70TI?
AT29C1024-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C1024-70TI 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 AT29C1024-70TI?
For technical support, including AT29C1024-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C1024-70TI requirements.
6.How does Aetrix verify that AT29C1024-70TI is sourced from the original manufacturer or authorized distributors?
All AT29C1024-70TI 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 AT29C1024-70TI meets industry standards.
7.What is the process for return or replacement of AT29C1024-70TI?
All AT29C1024-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT29C1024-70TI, 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 AT29C1024-70TI part is unused and in its original packaging.
Return procedure for AT29C1024-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT29C1024-70TI Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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