My Inquiry
My Account
Microchip Technology AT49F001ANT-45JI
- Part No.:
- AT49F001ANT-45JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49F001ANT-45JI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,606
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49F001ANT-45JI from Atmel is a 5V-only, 1 Mbit (128K × 8) in-system reprogrammable Flash memory with 45 ns read access time, 3-second chip erase cycle, and sector architecture comprising one 16K-byte boot block, two 8K-byte parameter blocks, and two main memory blocks (32K + 64K bytes). It operates across the industrial temperature range (–40°C to +85°C) and supports hardware data protection, DATA polling, and toggle-bit programming status detection for embedded firmware storage applications.
For engineers reviewing the AT49F001ANT-45JI datasheet, AT49F001ANT-45JI pinout, AT49F001ANT-45JI application, or AT49F001ANT-45JI equivalent, key selection considerations include its PLCC-32 package, boot block lockout capability (address range 1C000H–1FFFFH), 30 µs/byte programming time, CMOS standby current of 50 µA, and compatibility with standard microprocessor bus timing without high-voltage programming signals.
Technical Context
The AT49F001ANT-45JI implements a command-based architecture using CE/OE/WE control lines identical to EPROM interfaces, enabling drop-in replacement in legacy systems. Its internal program control logic handles byte programming, sector erasure, and chip erase autonomously-requiring no external clocks or high-voltage pulses.
It features dual-level hardware data protection: VCC sense (inhibits programming below 3.8 V), noise filtering (<15 ns pulse rejection on WE/CE), and control-line gating (OE low, CE high, or WE high disables programming). The RESET pin enables system-level reset and, at 12 V, overrides boot block lockout-though this override is disabled on the AN(T) variant per documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - directly maps to 16-bit or 8-bit microcontroller data buses without glue logic. |
| Read Access Time | 45 ns max - supports 22 MHz bus operation with standard microprocessor timing margins. |
| Erase Cycle Time | 3 seconds typical for full chip erase - enables rapid field firmware updates without extended downtime. |
| Byte Programming Time | 30 µs typical - allows fine-grained patching of firmware images without bulk reprogramming overhead. |
| Standby Current | 50 µA CMOS - suitable for low-power embedded systems requiring persistent nonvolatile storage during sleep modes. |
| Operating Voltage | 5.0 V ±10% - eliminates need for dedicated programming voltage rails; compatible with legacy 5V logic families. |
| Temperature Range | –40°C to +85°C industrial grade - validated for deployment in automotive body control modules and industrial HMIs. |
Pinout & Package
AT49F001ANT-45JI is supplied in a 32-lead Plastic J-Leaded Chip Carrier (PLCC) package, compliant with JEDEC MS-016 Variation AE, with dimensions 12.4 mm × 12.4 mm × 3.4 mm (max height). Pin 1 is marked by a corner chamfer; pin 9 is NC (no connect) per datasheet note.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A11–A16 are don't-care in some command cycles per spec. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read access; controls device selection on shared data buses. |
| OE | Output Enable | Active-low output gate; used with CE to prevent bus contention; high-Z when deasserted regardless of CE state. |
| WE | Write Enable | Active-low write strobe; latches address/data during programming/erase command sequences; must be high for read mode. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface for read data output and program data input; supports DATA polling on I/O7 and toggle-bit detection on I/O6. |
| RESET | Reset Input | Active-low system reset; halts ongoing operations and forces high-Z outputs; 12 V input enables boot block override (functional on ANT variant). |
| VCC / GND | Power Supply | Single 5V supply (4.5–5.5 V); ground reference for all I/O and internal logic; decoupling required within 10 mm of pins 16 and 32. |
| NC | No Connect | Pin 9 is unconnected - must be left floating or tied to GND/VCC per board layout best practices; not bonded internally. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Block Lockout | 16K-byte boot block (1C000H–1FFFFH) can be permanently write-protected via command sequence, securing bootloader code while allowing runtime update of application sectors. |
| Hardware Data Protection | VCC sense, noise filtering, and control-line gating prevent accidental writes during power transients or EMI events - eliminates need for external write-protection circuitry. |
| DATA Polling & Toggle Bit | I/O7 complement feedback and I/O6 toggling provide real-time, software-driven confirmation of programming/erase completion without timer dependencies or external polling hardware. |
| 5V-Only Reprogrammability | Eliminates requirement for 12V programming supplies - simplifies power design and enables in-circuit firmware updates using standard system 5V rail. |
| Industrial Temperature Operation | Validated performance from –40°C to +85°C ensures reliability in under-hood automotive ECUs, factory-floor PLCs, and outdoor telecom equipment. |
Applications
| Automotive Body Control Module | Industrial Programmable Logic Controller |
|---|---|
|
Use Scenario: Storing calibrated sensor lookup tables and actuator control firmware in engine bay-mounted ECUs subject to thermal cycling and vibration. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with fast 45 ns read access for real-time control loop execution and secure boot code retention. Use Value: Boot block lockout prevents corruption of safety-critical startup routines during over-the-air updates; 50 µA standby current extends battery life in always-on modules. |
Use Scenario: Holding ladder logic programs and I/O configuration data in DIN-rail mounted PLCs deployed in manufacturing environments. IC Role / Device Role / Timing Role: Field-upgradable program memory supporting sector-erase granularity to preserve HMI configuration while updating control algorithms. Use Value: 3-second chip erase enables rapid firmware recovery after corrupted uploads; PLCC-32 package provides mechanical robustness for high-vibration installations. |
| Legacy Industrial HMI Display | Medical Diagnostic Equipment Bootloader |
|
Use Scenario: Replacing obsolete EPROMs in aging human-machine interface panels where PCB layout cannot accommodate new footprints. IC Role / Device Role / Timing Role: Pin-compatible Flash replacement for 27C010-style EPROMs, leveraging identical CE/OE/WE timing and 5V-only operation. Use Value: 45 ns access time meets original EPROM timing specs; no redesign needed for address/data bus loading or timing margin analysis. |
Use Scenario: Securing certified bootloader code in Class II medical devices requiring FDA-compliant firmware integrity verification. IC Role / Device Role / Timing Role: Tamper-resistant boot memory with hardware-enforced write protection and 10,000-cycle endurance for regulatory audit trails. Use Value: Boot block lockout ensures bootloader immutability post-certification; 12 V RESET override allows authorized service personnel to reflash only with physical hardware intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV001BT-45EI | 45 ns access, 1 Mbit, 3.0 V core (5 V I/O), 12 V RESET not supported; boot block at 00000H–03FFFH. | Lacks 12 V boot override; requires separate 3.3 V supply; boot block location differs - incompatible for direct replacement in ANT-optimized layouts. | Select if migrating to lower-voltage systems and boot block address alignment is not critical. |
| SST39VF010-45-4C-NHE | 45 ns access, 1 Mbit, 3.3 V only, no 12 V RESET pin; sector erase only (no chip erase), 100,000 write cycles. | Not 5 V tolerant; lacks RESET-based boot override; higher endurance but incompatible voltage domain and command set. | Choose for new 3.3 V designs prioritizing longevity over legacy 5 V compatibility and boot security features. |
Compared with AM29LV001BT-45EI and SST39VF010-45-4C-NHE, the AT49F001ANT-45JI uniquely combines 5 V-only operation, 12 V RESET-enabled boot override, and industrial-grade PLCC packaging - making it the sole option for retrofitting legacy 5 V systems requiring field-recoverable secure boot code.
Availability
AT49F001ANT-45JI is available at Aetrix Electronics and suitable for automotive body control modules, industrial programmable logic controllers, and legacy HMI display upgrades requiring stable component supply and long-term obsolescence management.
Supply support for AT49F001ANT-45JI 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, nonvolatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT49F001A(N)(T) family was designed as a 5V-only Flash memory solution for in-system reprogramming of embedded firmware in cost-sensitive, thermally demanding environments - emphasizing pin compatibility with EPROMs and hardware-based data integrity.
FAQ
What is the boot block address range for AT49F001ANT-45JI?
The AT49F001ANT-45JI uses the "T" variant memory map, where the 16K-byte boot block occupies addresses 1C000H to 1FFFFH. This differs from the base AT49F001A(N) variant (00000H–03FFFH) and is confirmed in the datasheet's sector address table and boot lockout detection section. The AT49F001ANT-45JI's boot block location is fixed and cannot be remapped.
Does AT49F001ANT-45JI support 12 V RESET-based boot block override?
Yes, the AT49F001ANT-45JI supports 12 V ±0.5 V applied to the RESET pin to temporarily disable boot block lockout and enable chip/sector erase or byte programming of protected regions. This feature is explicitly documented as functional for the AT49F001A(N)T series - and the "ANT" suffix confirms inclusion of the T variant's RESET functionality.
What package type is used for AT49F001ANT-45JI?
The AT49F001ANT-45JI is packaged in a 32-lead Plastic J-Leaded Chip Carrier (PLCC), designated as package code "32J" in Atmel's ordering information. Its dimensions comply with JEDEC MS-016 Variation AE, and pin 9 is a no-connect terminal - consistent across all PLCC variants of the AT49F001A(N)(T) family.
How does hardware data protection work on AT49F001ANT-45JI?
The AT49F001ANT-45JI implements three hardware protections: (1) VCC sense inhibits programming if supply drops below ~3.8 V; (2) programming is blocked if OE is low, CE is high, or WE is high; and (3) noise pulses <15 ns on WE/CE are ignored. These features prevent spurious writes during power-up, brownout, or EMI events without software intervention - a key reliability feature of the AT49F001ANT-45JI.
Can AT49F001ANT-45JI be used as a direct replacement for AT29C010A-15PU?
No - the AT49F001ANT-45JI is not a direct replacement for AT29C010A-15PU. While both are 1 Mbit 5V Flash memories, the AT29C010A uses a different command set, lacks boot block lockout, has slower 150 ns access time, and employs a 32-pin PDIP package. The AT49F001ANT-45JI's PLCC-32 footprint, 45 ns speed, and sector architecture require PCB and firmware validation before substitution.
AT49F001ANT-45JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- 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:
- 50µs
- Access Time:
- 45 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT49F001ANT-45JI FAQ
1.How can I place an order for AT49F001ANT-45JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F001ANT-45JI 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 AT49F001ANT-45JI reliable?
The price and inventory of AT49F001ANT-45JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F001ANT-45JI is usually 5 days.
3.What payment methods are accepted for AT49F001ANT-45JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F001ANT-45JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F001ANT-45JI?
AT49F001ANT-45JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F001ANT-45JI 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 AT49F001ANT-45JI?
For technical support, including AT49F001ANT-45JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F001ANT-45JI requirements.
6.How does Aetrix verify that AT49F001ANT-45JI is sourced from the original manufacturer or authorized distributors?
All AT49F001ANT-45JI 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 AT49F001ANT-45JI meets industry standards.
7.What is the process for return or replacement of AT49F001ANT-45JI?
All AT49F001ANT-45JI units undergo pre-shipment inspection (PSI). If there is an issue with AT49F001ANT-45JI, 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 AT49F001ANT-45JI part is unused and in its original packaging.
Return procedure for AT49F001ANT-45JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F001ANT-45JI 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…
