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Microchip Technology AT49BV001T-90TI
- Part No.:
- AT49BV001T-90TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV001T-90TI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,796
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Product details
Overview
AT49BV001T-90TI from Atmel is a 1 Mbit (128K × 8) single-supply 2.7–3.6 V in-system reprogrammable Flash memory with 90 ns read access time, sector-based architecture (16 KB boot block + two 8 KB parameter blocks + two main memory blocks), and hardware data protection. It operates across industrial temperature range (−40°C to +85°C) and supports byte programming (30 µs/byte typical) and chip/sector erase (10 s max).
For engineers reviewing the AT49BV001T-90TI datasheet, AT49BV001T-90TI pinout, AT49BV001T-90TI application, or AT49BV001T-90TI equivalent, this page delivers verified electrical specs, PLCC-32 pin mapping, boot-block lockout behavior, DATA polling/Toggle Bit status detection, and industrial-grade supply chain support.
Technical Context
The AT49BV001T-90TI implements a standard parallel Flash interface with CE/OE/WE control logic, supporting EPROM-like read timing and command-based write/erase operations. Its sector architecture isolates the 16 KB boot block (address range 1C000H–1FFFFH) for secure firmware storage, with programmable lockout enabled via six-byte command sequence.
It features dual status detection-DATA polling (I/O7 complement toggle) and Toggle Bit (I/O6 toggling)-to signal end-of-program or end-of-erase without external timing dependencies. Hardware protection includes VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line inhibition (OE low, CE high, or WE high blocks writes).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits |
| Read Access Time | 90 ns maximum - determines minimum bus cycle time in microcontroller interfaces |
| Supply Voltage | 2.7 V to 3.6 V - enables direct battery operation (e.g., 3 V Li-ion or two AA cells) |
| Byte Programming Time | 30 µs typical - defines minimum interval between successive byte writes in firmware updates |
| Erase Cycle Time | 10 seconds maximum - sets worst-case delay for full-chip or sector erasure during field reprogramming |
| Endurance | 10,000 program/erase cycles - specifies guaranteed rewrite lifetime before wear-out in embedded logging or configuration storage |
| Operating Temperature | −40°C to +85°C - qualifies for industrial control, automotive body electronics, and outdoor equipment |
Pinout & Package
AT49BV001T-90TI is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration. Pin 1 is marked by notch orientation; pin 9 is NC (No Connect) per datasheet revision 1110C–FLASH–9/03.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus for accessing full 128K-word memory space (00000H–1FFFFH) |
| I/O0–I/O7 | Data Inputs/Outputs | 8-bit bidirectional data bus; supports byte-wide reads/writes and status polling on I/O6/I/O7 |
| 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; also accepts 12 V ±0.5 V override to unlock boot block when lockout is enabled |
| VCC | Power Supply | 2.7–3.6 V core supply; powers internal logic, charge pumps, and I/O buffers |
| GND | Ground | Reference return path for all signals and power; requires low-impedance PCB connection |
| NC | No Connect | Pin 9 - must remain unconnected; floating or driven may cause undefined behavior |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Lockout | 16 KB protected region (1C000H–1FFFFH) prevents accidental overwrite of bootloader code; enabled via 6-byte command sequence |
| Hardware Data Protection | VCC sense, noise filtering, and control-line inhibition eliminate spurious writes during power transients or EMI events |
| DATA Polling & Toggle Bit | Real-time status feedback without timers: I/O7 complement indicates program completion; I/O6 toggle confirms erase/program progress |
| Sector Erase Flexibility | Independent erasure of two 8 KB parameter blocks and two main memory blocks (32 KB + 64 KB) enables modular firmware updates |
| 12 V RESET Override | Applying 12 V to RESET pin temporarily disables boot block lockout - critical for recovery after failed firmware update |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing boot code and runtime configuration in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile storage for bootloader and user-configurable parameters; accessed at system power-up and during firmware upgrade via JTAG or serial interface. Use Value: Boot block lockout ensures bootloader integrity across 10,000+ field updates; 90 ns read speed enables fast initialization in real-time control loops. | Use Scenario: Retaining calibration data, device settings, and safety-critical firmware in portable diagnostic instruments operating under battery power. IC Role / Device Role / Timing Role: Low-voltage Flash memory interfaced to an ARM Cortex-M3 MCU; supplies persistent storage with minimal active current (25 mA) and ultra-low standby draw (50 µA). Use Value: 2.7–3.6 V operation extends battery life; sector erase allows selective recalibration data refresh without rewriting full firmware image. |
| Automotive Body Control Module | Network Router Boot Image Storage |
Use Scenario: Hosting boot firmware and feature-enabling keys in door module ECUs exposed to −40°C to +85°C ambient conditions. IC Role / Device Role / Timing Role: Industrial-grade Flash memory mapped into microcontroller address space; accessed during cold-start and OTA update sequences. Use Value: Qualified for extended temperature range; hardware protection prevents corruption during load-dump transients common in 12 V automotive systems. | Use Scenario: Storing primary boot image and fail-safe recovery firmware in enterprise-grade Ethernet routers requiring high reliability and field-upgradability. IC Role / Device Role / Timing Role: Parallel-interface Flash memory connected to MIPS-based SoC; serves as first-stage boot source before loading Linux kernel from NAND. Use Value: Sector architecture enables atomic firmware swaps: new image written to alternate memory block while old remains active until verified and switched. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49BV001T-90JI | Same die, identical timing and command set; differs only in packaging (PLCC-32 vs. PDIP-32) and marking | PDIP package suits through-hole prototyping and legacy board designs; lacks surface-mount thermal performance | Select AT49BV001T-90JI only if manual assembly or socket-based development is required |
| AT49LV001T-90TI | 3.0–3.6 V only (no 2.7 V support); otherwise identical pinout, timing, and sector map | Not suitable for battery-powered systems below 3.0 V; marginally higher VCC min reduces compatibility with aging Li-ion cells | Choose AT49LV001T-90TI only when system VCC is tightly regulated ≥3.0 V and cost sensitivity favors LV variant |
Compared with AT49BV001T-90JI and AT49LV001T-90TI, the AT49BV001T-90TI uniquely supports 2.7 V operation for wide-input battery systems while maintaining industrial temperature rating and PLCC-32 mechanical compatibility - making it optimal for ruggedized embedded designs requiring voltage flexibility and surface-mount reliability.
Availability
AT49BV001T-90TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive body control module applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AT49BV001T-90TI 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 security ICs for embedded systems.
The AT49BV/LV series was designed as cost-effective, single-supply Flash memory for in-system reprogramming in resource-constrained industrial and consumer electronics - emphasizing sector protection, low-voltage operation, and robust command-set compatibility.
FAQ
What is the boot block address range for AT49BV001T-90TI?
The boot block for AT49BV001T-90TI occupies addresses 1C000H to 1FFFFH (16 KB). This differs from the base AT49BV001(N) variant, which uses 00000H–03FFFH. The relocated boot block avoids overlap with main application code in larger memory maps and aligns with the T-suffix topology defined in Atmel's 1110C–FLASH–9/03 datasheet.
Does AT49BV001T-90TI support 2.7 V operation?
Yes, AT49BV001T-90TI supports full functionality across 2.7 V to 3.6 V. This BV-series voltage range enables direct integration with single-cell lithium batteries and low-dropout regulators in portable equipment - unlike the LV-series (e.g., AT49LV001T-90TI), which requires minimum 3.0 V.
How is boot block lockout overridden on AT49BV001T-90TI?
Boot block lockout on AT49BV001T-90TI can be overridden by applying 12.0 V ± 0.5 V to the RESET pin during chip erase, sector erase, or byte programming. Once RESET returns to TTL levels, lockout reactivates. This feature is absent in N-suffix variants (e.g., AT49BV001N-90TI) per datasheet section "Boot Block Programming Lockout Override".
What package type is used for AT49BV001T-90TI?
AT49BV001T-90TI uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package (package code JC/JI). Pin 1 is identified by the package notch; pin 9 is designated NC (No Connect) and must remain unconnected per datasheet Figure 1 and ordering information table on page 18.
Can AT49BV001T-90TI be used in place of AT49BV001-90TI?
No - AT49BV001T-90TI and AT49BV001-90TI are not interchangeable. The "T" suffix denotes relocated boot block (1C000H–1FFFFH) and distinct sector addressing; the base part uses 00000H–03FFFH boot block. Swapping them risks incorrect firmware execution or failed erase commands due to mismatched sector address decoding.
AT49BV001T-90TI 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:
- 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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49BV001T-90TI FAQ
1.How can I place an order for AT49BV001T-90TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001T-90TI 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 AT49BV001T-90TI reliable?
The price and inventory of AT49BV001T-90TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001T-90TI is usually 5 days.
3.What payment methods are accepted for AT49BV001T-90TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001T-90TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001T-90TI?
AT49BV001T-90TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001T-90TI 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 AT49BV001T-90TI?
For technical support, including AT49BV001T-90TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001T-90TI requirements.
6.How does Aetrix verify that AT49BV001T-90TI is sourced from the original manufacturer or authorized distributors?
All AT49BV001T-90TI 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 AT49BV001T-90TI meets industry standards.
7.What is the process for return or replacement of AT49BV001T-90TI?
All AT49BV001T-90TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001T-90TI, 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 AT49BV001T-90TI part is unused and in its original packaging.
Return procedure for AT49BV001T-90TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV001T-90TI Tags
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