My Inquiry
My Account
Microchip Technology AT49BV001NT-90VC
- Part No.:
- AT49BV001NT-90VC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49BV001NT-90VC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,036
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49BV001NT-90VC from Microchip Technology (formerly Atmel) is a 1 Mbit (128K × 8) single-supply 2.7–3.6V in-system reprogrammable Flash memory IC with 90 ns read access time, 10-second chip erase cycle, and sector-based architecture including a 16-Kbyte boot block with programmable lockout. It operates across commercial temperature range (0°C to 70°C) in a 32-lead VSOP package and is used for firmware storage in embedded microcontroller systems.
For engineers reviewing the AT49BV001NT-90VC datasheet, AT49BV001NT-90VC pinout, AT49BV001NT-90VC application, or AT49BV001NT-90VC equivalent, key selection considerations include its 3.0V-only command set, DATA polling/Toggle Bit programming status detection, hardware data protection features, and boot block lockout override via 12V RESET input - all critical for secure, field-upgradable firmware storage designs.
Technical Context
The AT49BV001NT-90VC implements a standard parallel Flash interface with CE/OE/WE control logic and supports both byte-programming (30 µs typical) and sector/chip erase operations via six-cycle software command sequences. Its internal program control logic eliminates need for external high-voltage programming signals.
It features dual-mode boot block protection: permanent lockout when enabled on the NT variant, with override capability via 12V applied to RESET during erase/program cycles. The device uses Atmel's nonvolatile CMOS process and includes VCC sense, noise filtering, and write-inhibit logic for robust hardware data protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - sufficient for bootloader + parameter storage in resource-constrained MCU systems. |
| Read Access Time | 90 ns maximum - enables direct execution from Flash (XIP) in 10–12 MHz bus systems without wait states. |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3V logic and battery-backed operation down to 2.7V. |
| Erase Cycle Time | 10 seconds typical for full chip erase - supports rapid firmware updates in production and field service. |
| Programming Speed | 30 µs/byte typical - allows efficient incremental firmware patching without excessive downtime. |
| Endurance | 10,000 program/erase cycles - validated for long-term field deployment in industrial control and telecom equipment. |
| Standby Current | 50 µA CMOS - enables ultra-low-power retention in always-on embedded devices. |
Pinout & Package
AT49BV001NT-90VC is housed in a 32-lead Very Small Outline Package (VSOP), 8 mm × 14 mm body, 0.5 mm lead pitch, JEDEC MO-187AC compliant. Pin 1 is located at bottom-left corner (notch-marked side), with pins numbered counter-clockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A16 is MSB for 131,072-word space. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel data path for read, program, and identification modes; TTL-compatible I/O levels. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access. |
| OE | Output Enable | Active-low output control; used with CE to prevent bus contention during shared-memory access. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming. |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12V input enables boot block override. |
| VCC | Power Supply | Primary 2.7–3.6V supply; internally regulated for programming voltage generation. |
| GND | Ground | Signal and power reference plane; decoupling capacitor required within 1 cm of VCC pin. |
| NC | No Connect | Pin 32 (VSOP); must remain unconnected - not internally bonded. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture | One 16-Kbyte boot block + two 8-Kbyte parameter blocks + two main memory blocks (32K/64K) - enables modular firmware partitioning and safe over-the-air updates. |
| Boot Block Lockout | Hardware-enforced write protection for boot code region (1C000H–1FFFFH); prevents accidental corruption during field upgrades. |
| DATA Polling & Toggle Bit | Real-time programming/erase status feedback via I/O7 complement or I/O6 toggling - eliminates need for fixed delay timers in host firmware. |
| Hardware Data Protection | VCC sense (<1.8V inhibits programming), noise filter (<15 ns pulse rejection), and multi-signal write inhibit (OE high / CE high / WE high) - ensures immunity to EMI and brown-out events. |
| 12V RESET Override | Applying 12V ±0.5V to RESET pin during erase/program bypasses boot block lockout - enables recovery of corrupted boot sectors without device replacement. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing and updating firmware for programmable logic controllers in factory automation environments with frequent field revisions. IC Role / Device Role / Timing Role: Nonvolatile parallel Flash memory providing XIP-capable boot code and parameter storage with 90 ns read latency. Use Value: Sector-erase capability isolates parameter updates from boot code, while hardware lockout prevents unauthorized modification of safety-critical startup routines. | Use Scenario: Holding certified bootloader and calibration data in FDA-regulated diagnostic instruments requiring traceable firmware revision control. IC Role / Device Role / Timing Role: Secure, reprogrammable firmware storage with verified 10,000-cycle endurance and 50 µA standby current for battery-backed operation. Use Value: 12V RESET override enables authorized recovery of locked boot sectors during service, meeting medical device lifecycle maintenance requirements. |
| Telecom Base Station Configuration | Automotive Infotainment System Update Memory |
Use Scenario: Storing configuration profiles and protocol stacks in remote radio units exposed to wide temperature swings (-40°C to +85°C industrial grade variants available). IC Role / Device Role / Timing Role: Parallel-interface Flash memory with 2.7–3.6V operation and 10-second chip erase for rapid reconfiguration during network handover. Use Value: Hardware data protection prevents corruption during power transients common in telecom infrastructure, ensuring reliable restart after grid fluctuations. | Use Scenario: Hosting updatable firmware images and UI assets in automotive head units where over-the-air (OTA) updates require fail-safe rollback capability. IC Role / Device Role / Timing Role: Dual-sector Flash with independent parameter block erasure enabling atomic update + backup image storage. Use Value: Boot block lockout ensures certified startup code remains intact during OTA updates, satisfying ISO 26262 ASIL-B functional safety constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF010-90-4C-NHE | 90 ns access, 3.0–3.6V, same 1 Mbit density but lacks 12V RESET override and has no boot block lockout feature. | Supports basic firmware storage but cannot recover locked boot sectors; requires external supervision for secure updates. | Select when cost sensitivity outweighs need for field-recoverable boot protection. |
| MX29LV010CTTI-90G | 90 ns access, 3.0–3.6V, includes CFI-compliant command set and 16-Kbyte boot sector, but lockout is software-only and non-volatile only if VPP is present. | Requires VPP pin for permanent lockout; lacks 12V RESET override path, limiting field serviceability. | Select when CFI compatibility is required for standardized flash management middleware. |
Compared with SST39VF010-90-4C-NHE and MX29LV010CTTI-90G, the AT49BV001NT-90VC uniquely combines hardware-enforced boot block lockout with 12V RESET override - enabling both security and field serviceability in a single device without external components or VPP dependency.
Availability
AT49BV001NT-90VC 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 planning.
Supply support for AT49BV001NT-90VC 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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel Flash products, including manufacturing, documentation, and technical assistance.
The AT49BV001NT-90VC belongs to Atmel's Battery-Voltage™ Flash memory product line, designed specifically for low-voltage, in-system reprogrammable firmware storage in battery-powered and energy-conscious embedded systems.
FAQ
What is the boot block address range for AT49BV001NT-90VC?
The boot block address range for AT49BV001NT-90VC is 1C000H to 1FFFFH (16 Kbytes). This differs from non-T variants (e.g., AT49BV001N), which use 00000H–03FFFH. The T suffix denotes top-boot architecture, placing the protected boot sector at the highest memory addresses - a key layout distinction confirmed in the device's block diagram and command definitions.
Does AT49BV001NT-90VC support 12V RESET override for boot block programming?
Yes, AT49BV001NT-90VC supports 12V ±0.5V applied to the RESET pin during chip erase, sector erase, or byte programming to temporarily override the boot block lockout feature. This capability is explicitly documented in the "BOOT BLOCK PROGRAMMING LOCKOUT OVERRIDE" section and is unavailable on N(T) variants without the 'T' suffix - confirming AT49BV001NT-90VC retains this recovery function.
What package type is used by AT49BV001NT-90VC?
AT49BV001NT-90VC uses a 32-lead Plastic Very Small Outline Package (VSOP), 8 mm × 14 mm body size, per ordering code suffix 'VC'. This matches the package designation in the AT49BV001NT Ordering Information table (page 19), where 'VC' corresponds to 32V - the VSOP variant - distinct from PLCC (JC), PDIP (PC), or TSOP (TC) options.
How does DATA polling work on AT49BV001NT-90VC?
During programming, reading the last loaded byte from AT49BV001NT-90VC returns the complement of the programmed data on I/O7 until completion; once valid data appears, the cycle is finished. This real-time status mechanism - confirmed in the "DATA POLLING" section - eliminates fixed delays and enables deterministic host firmware timing without relying on tBP specifications alone.
Is AT49BV001NT-90VC compatible with standard EPROM read protocols?
Yes, AT49BV001NT-90VC is accessed like an EPROM: data appears on I/O0–I/O7 when CE and OE are low and WE is high. Its dual-line control (CE/OE) prevents bus contention, and timing parameters (tACC = 90 ns, tCE = 90 ns) align with standard 3.3V EPROM interfaces - making it a drop-in replacement for many legacy EPROM-based designs requiring reprogrammability.
AT49BV001NT-90VC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.488", 12.40mm Width)
- Packaging:
- Tray
- 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:
- 90 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VSOP
AT49BV001NT-90VC FAQ
1.How can I place an order for AT49BV001NT-90VC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001NT-90VC 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 AT49BV001NT-90VC reliable?
The price and inventory of AT49BV001NT-90VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001NT-90VC is usually 5 days.
3.What payment methods are accepted for AT49BV001NT-90VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001NT-90VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001NT-90VC?
AT49BV001NT-90VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001NT-90VC 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 AT49BV001NT-90VC?
For technical support, including AT49BV001NT-90VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001NT-90VC requirements.
6.How does Aetrix verify that AT49BV001NT-90VC is sourced from the original manufacturer or authorized distributors?
All AT49BV001NT-90VC 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 AT49BV001NT-90VC meets industry standards.
7.What is the process for return or replacement of AT49BV001NT-90VC?
All AT49BV001NT-90VC units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001NT-90VC, 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 AT49BV001NT-90VC part is unused and in its original packaging.
Return procedure for AT49BV001NT-90VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV001NT-90VC 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…
