My Inquiry
My Account
Microchip Technology AT49BV4096A-90TC
- Part No.:
- AT49BV4096A-90TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV4096A-90TC.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,303
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49BV4096A-90TC from Atmel is a 4-megabit (512K × 8 / 256K × 16) single-supply Flash memory IC with 2.7V–3.6V operation, 90 ns read access time, sector-based erase architecture (including 8K-word boot block), and hardware data protection. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring in-system reprogrammability without high-voltage programming.
For engineers reviewing the AT49BV4096A-90TC datasheet, AT49BV4096A-90TC pinout, AT49BV4096A-90TC application, or AT49BV4096A-90TC equivalent, key selection considerations include boot-block lockout capability, byte/word mode flexibility via BYTE pin, 10,000 write cycles endurance, CMOS standby current of 50 µA, and compatibility with standard EPROM-like bus interface (CE/OE/WE).
Technical Context
The AT49BV4096A-90TC implements a four-sector Flash architecture: one 8K-word boot block (00000H–01FFFH), two 4K-word parameter blocks, and one 240K-word main memory array. Erase and program operations are fully internalized-no external timing clocks required-and controlled via six-byte command sequences written to specific address/data latches.
It supports dual data width modes: word mode (I/O0–I/O15 active, BYTE = 1/open) and byte mode (I/O0–I/O7 active, I/O15 repurposed as LSB address A-1, BYTE = 0). Hardware protection includes VCC sense (<1.8V inhibits programming), 10 ms power-on delay, noise filtering (<15 ns pulses ignored), and CE/OE/WE state-dependent program inhibit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512K × 8 or 256K × 16 organization) |
| Read Access Time | 90 ns - determines maximum sustained read throughput in synchronous bus systems |
| Supply Voltage Range | 2.7V–3.6V - enables direct battery-powered operation (e.g., 3V Li-ion or two AA cells) |
| Active Current | 25 mA - defines peak power draw during read or program cycles |
| Standby Current | 50 µA CMOS - supports ultra-low-power sleep modes in portable devices |
| Erase Time (Sector) | 10 seconds - sets minimum latency for firmware update segments |
| Program Time (Byte/Word) | 30 µs typical - enables fast field updates of small configuration data |
| Endurance | 10,000 write/erase cycles - qualifies for long-life embedded control applications |
Pinout & Package
AT49BV4096A-90TC is packaged in a 44-lead, 0.525" wide plastic gull-wing SOIC (package code 44R), compliant with JEDEC MS-012AC. Pin 1 is marked by a notch or beveled corner; body width is 13.46 mm, lead pitch is 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 512K-byte addressing space |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read output |
| OE | Output Enable | Active-low output gate; controls data bus drive to prevent contention when shared |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and programming |
| RESET | Reset Input | Active-low halts operation and tri-states outputs; 12V pulse overrides boot-block lockout |
| VPP | Programming Voltage | No-connect or tied to VCC/GND/5V/12V; no functional effect on AT49BV4096A-90TC operation |
| I/O0–I/O15 | Data I/O (Word Mode) | Bidirectional 16-bit data bus in word mode; I/O0–I/O7 only active in byte mode |
| I/O15/A-1 | Multi-function Terminal | In byte mode: LSB address input (A-1); in word mode: MSB data bit (I/O15) |
| BYTE | Mode Select | Logic 0 = byte mode (8-bit bus); logic 1 or open = word mode (16-bit bus) |
| NC | No Connect | Unbonded pin; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | Hardware-enforced write protection for 8K-word (00000H–01FFFH) region containing secure boot code |
| Internal Erase/Program Control | Self-timed erase (10 s) and program (30 µs) eliminate external timing circuitry and simplify firmware |
| Data Polling & Toggle Bit | Dual real-time status indicators (I/O7 complement, I/O6 toggle) enable efficient polling without fixed delays |
| Hardware Data Protection | VCC sense, 10 ms power-on delay, noise filtering, and control-line gating prevent accidental writes |
| Flexible Bus Interface | Standard CE/OE/WE timing compatible with 80C51, 68K, and other microprocessor buses |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing firmware images and calibration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile program memory providing boot code execution and field-upgradable application binaries. Use Value: Boot block lockout ensures bootloader integrity across 10,000+ field updates; 50 µA standby current extends uptime during maintenance cycles. | Use Scenario: Retaining device-specific calibration parameters and safety-critical configuration data in portable diagnostic equipment. IC Role / Device Role / Timing Role: Parameter storage element with hardware write protection to meet IEC 62304 data retention requirements. Use Value: Sector architecture allows independent erasure of calibration data without disturbing firmware; 2.7V min supply supports single-cell lithium operation. |
| Automotive Infotainment Boot ROM | Networking Equipment BIOS Storage |
Use Scenario: Hosting boot firmware for head-unit microcontrollers in automotive infotainment systems operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Bottom-boot Flash memory mapped at reset vector address 0x00000 for cold-start execution. Use Value: Industrial temperature grade (-40°C to +85°C) and 90 ns access ensure deterministic boot timing under thermal stress. | Use Scenario: Storing BIOS and FPGA configuration bitstreams in enterprise switches and routers requiring remote firmware updates. IC Role / Device Role / Timing Role: In-system reprogrammable storage accessed via CPU memory-mapped I/O with CE/OE/WE handshaking. Use Value: Byte/word mode flexibility simplifies integration with both 8-bit management MCUs and 16-bit host processors; 10,000-cycle endurance supports multi-year deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF400A-90-4C-EKE | 4 Mbit, 3.0V–3.6V, 90 ns, 44-pin SOIC; lacks boot-block lockout and RESET-based override | Requires external software management of boot sector protection; no hardware reset-override for locked sectors | Select when boot-block lockout is unnecessary and cost sensitivity outweighs security features |
| MX29LV400CBTI-90G | 4 Mbit, 3.0V–3.6V, 90 ns, 48-pin TSOP; includes CFI-compliant command set and wider temperature range (-40°C to +105°C) | Supports standardized CFI query mode for automatic driver detection; higher max temp suits extended industrial use | Select when CFI compliance or extended temperature operation is required over SOIC package preference |
Compared with SST39VF400A-90-4C-EKE, AT49BV4096A-90TC provides hardware-enforced boot-block protection and 12V RESET override-critical for secure boot integrity. Against MX29LV400CBTI-90G, it trades CFI compatibility and 105°C rating for SOIC packaging and Atmel's proven boot-lock algorithm, favoring cost-sensitive, space-constrained designs.
Availability
AT49BV4096A-90TC is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics, automotive infotainment, networking equipment, and portable instrumentation requiring stable component supply across extended product lifecycles.
Supply support for AT49BV4096A-90TC 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 AT49BV/LV4096A product line was designed for embedded systems requiring reliable, low-voltage, in-system reprogrammable nonvolatile storage with hardware-level boot code protection-targeting industrial control, medical, and automotive applications.
FAQ
What voltage range does the AT49BV4096A-90TC support for reliable read/write operation?
The AT49BV4096A-90TC operates reliably across 2.7V to 3.6V for both read and write functions. Its VCC sense circuitry disables programming if supply drops below ~1.8V, and a 10 ms internal power-on delay ensures stable initialization. This makes AT49BV4096A-90TC suitable for battery-backed systems where voltage may sag during brownout conditions.
How does the boot block programming lockout feature work on the AT49BV4096A-90TC?
The AT49BV4096A-90TC's boot block lockout is enabled via a six-cycle command sequence (5555h/AAh → 2AAAh/55h → 5555h/80h → 5555h/AAh → 2AAAh/55h → 5555h/40h). Once activated, the 8K-word boot block (00000H–01FFFH) becomes immune to erase/program commands using ≤5.5V inputs. AT49BV4096A-90TC retains the ability to override this lock using a 12V pulse on RESET during erase/program cycles.
Can the AT49BV4096A-90TC operate in both 8-bit and 16-bit data bus configurations?
Yes. The AT49BV4096A-90TC supports byte mode (8-bit) and word mode (16-bit) via the BYTE pin. When BYTE = 0, only I/O0–I/O7 are active and I/O15 functions as address bit A-1. When BYTE = 1 or open, I/O0–I/O15 are active for 16-bit transfers. This dual-mode capability allows AT49BV4096A-90TC to interface seamlessly with both 8-bit microcontrollers and 16-bit processors without external glue logic.
What are the erase time and endurance specifications for the AT49BV4096A-90TC?
The AT49BV4096A-90TC requires 10 seconds for sector erase and guarantees ≥10,000 program/erase cycles per block. Chip erase skips the boot block if lockout is enabled, erasing only main memory and parameter blocks. Endurance is specified across the full industrial temperature range (-40°C to +85°C), and wear leveling is left to system-level firmware since AT49BV4096A-90TC implements fixed physical sector mapping.
Does the AT49BV4096A-90TC require external high-voltage circuitry for programming?
No. The AT49BV4096A-90TC performs all erase and program operations using only its 2.7V–3.6V VCC supply-no external VPP or charge pumps are needed. Programming is initiated via standard microprocessor write cycles to command addresses (e.g., 5555h/AAh), and the device internally generates required pulse widths and voltages. This eliminates high-voltage routing complexity and makes AT49BV4096A-90TC ideal for compact, low-cost embedded designs.
AT49BV4096A-90TC 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:
- 4Mbit
- Memory Organization:
- 512K x 8, 256K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 30µs
- 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:
- 48-TSOP
AT49BV4096A-90TC FAQ
1.How can I place an order for AT49BV4096A-90TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV4096A-90TC 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 AT49BV4096A-90TC reliable?
The price and inventory of AT49BV4096A-90TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV4096A-90TC is usually 5 days.
3.What payment methods are accepted for AT49BV4096A-90TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV4096A-90TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV4096A-90TC?
AT49BV4096A-90TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV4096A-90TC 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 AT49BV4096A-90TC?
For technical support, including AT49BV4096A-90TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV4096A-90TC requirements.
6.How does Aetrix verify that AT49BV4096A-90TC is sourced from the original manufacturer or authorized distributors?
All AT49BV4096A-90TC 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 AT49BV4096A-90TC meets industry standards.
7.What is the process for return or replacement of AT49BV4096A-90TC?
All AT49BV4096A-90TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV4096A-90TC, 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 AT49BV4096A-90TC part is unused and in its original packaging.
Return procedure for AT49BV4096A-90TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV4096A-90TC 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…
