My Inquiry
My Account
Microchip Technology AT49BV002-12TC
- Part No.:
- AT49BV002-12TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV002-12TC.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,377
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49BV002-12TC from Microchip Technology (formerly Atmel) is a 2 Mbit (256K × 8) single-supply 3V-only Flash memory IC used for nonvolatile code and data storage in embedded systems. It features 70 ns read access time, 10-second chip erase, byte-programmable architecture with sector protection, and operates across 0°C to 70°C commercial temperature range in TSOP-32 package.
For engineers reviewing the AT49BV002-12TC datasheet, AT49BV002-12TC pinout, AT49BV002-12TC application, or AT49BV002-12TC equivalent, key selection criteria include boot-block lockout capability, DC-level reset override for reprogramming, DATA polling/Toggle Bit status detection, and compatibility with standard EPROM-like bus interface timing.
Technical Context
The AT49BV002-12TC implements a command-based software-controlled architecture requiring six-byte sequences for chip/sector erase and boot-lock enable. Its memory is partitioned into one 16K-byte boot block (address 3C000H–3FFFFH), two 8K-byte parameter blocks, and two main memory blocks (96K + 128K bytes).
It supports standard microprocessor timing with CE/OE/WE control lines, hardware data protection via VCC sense and noise filtering, and dual status detection (DATA polling on I/O7 and Toggle Bit on I/O6) for program/erase completion without external clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8), enabling firmware storage for mid-complexity microcontrollers |
| Read Access Time | 120 ns max - defines minimum bus cycle duration for reliable instruction fetch |
| Byte Programming Time | 30 µs typical - determines write throughput for field updates and configuration writes |
| Chip Erase Time | 10 seconds - sets worst-case latency for full memory reinitialization |
| Supply Voltage Range | 2.7 V to 3.6 V - compatible with 3.3 V logic rails and battery-backed operation |
| Active Current | 25 mA at 5 MHz - impacts power budget in active read/write modes |
| Standby Current | 50 µA CMOS - enables low-power retention in sleep states |
| Endurance | 10,000 program/erase cycles - specifies field lifetime under frequent update scenarios |
Pinout & Package
AT49BV002-12TC is housed in a 32-lead Thin Small Outline Package (TSOP), 8 mm × 20 mm body, Type 1 pinout per datasheet Rev. 0982D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing space |
| I/O0–I/O7 | Data Input/Output | Bi-directional 8-bit data bus compatible with standard microprocessor data paths |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read access |
| OE | Output Enable | Active-low output gate; controls data bus drive to prevent contention during shared-bus operation |
| WE | Write Enable | Active-low write strobe; latches address/data during programming/erase command sequences |
| RESET | Reset Input | Hardware reset and 12 V override for boot-block reprogramming; not DC on N variants |
| VCC | Power Supply | Single 2.7–3.6 V supply; powers all internal logic and charge pumps |
| GND | Ground | Reference return path for all signals and internal circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Lockout | 16K-byte protected region (3C000H–3FFFFH) prevents accidental overwrite of bootloader code |
| 12 V RESET Override | Enables boot block reprogramming even after lockout activation - critical for recovery in deployed systems |
| DATA Polling & Toggle Bit | Real-time status feedback on I/O7 and I/O6 eliminates need for fixed delay timers during programming |
| Sector-Erasable Architecture | Independent erasure of parameter blocks (8K each) and main memory blocks enables granular firmware updates |
| Hardware Data Protection | VCC sense, noise filtering (<15 ns pulse rejection), and control-line inhibition prevent spurious writes |
| EPROM-Compatible Interface | Standard CE/OE/WE timing allows drop-in replacement in legacy designs without logic redesign |
Applications
| Industrial HMI Firmware Storage | Embedded Telecom Bootloader |
|---|---|
Use Scenario: Storing boot firmware and configuration parameters in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Nonvolatile code storage with sector-erase granularity and hardware lockout to preserve boot integrity. Use Value: Enables safe over-the-air updates to application firmware while guaranteeing bootloader remains uncorrupted. |
Use Scenario: Hosting secure boot code and protocol stack initialization routines in VoIP gateways and base station controllers. IC Role / Device Role / Timing Role: Primary boot memory with 12 V RESET override for emergency recovery after failed firmware load. Use Value: Eliminates need for physical reprogramming jigs by allowing in-system boot block reflash under fault conditions. |
| Medical Device Configuration Memory | Automotive Diagnostic Module Storage |
Use Scenario: Retaining calibration data, user preferences, and safety-critical settings in portable diagnostic equipment. IC Role / Device Role / Timing Role: Parameter block storage (two 8K sections) with independent erasability for modular data management. Use Value: Allows selective update of calibration tables without disturbing device identity or regulatory certification data. |
Use Scenario: Storing OBD-II diagnostic routines and vehicle-specific adaptation maps in aftermarket scan tools. IC Role / Device Role / Timing Role: Main memory block (96K/128K) with 120 ns read timing suitable for real-time diagnostic execution. Use Value: Supports fast read access for time-sensitive CAN message parsing and response generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49BV002-12JI | Same core Flash array and command set, but in 32-lead PDIP package with industrial -40°C to +85°C rating | Preferred for prototyping, through-hole assembly, or extended-temperature environments | Select when board layout requires DIP footprint or operating temperature exceeds 70°C |
| SST39VF020-120-4C-NHE | 2 Mbit Flash with 120 ns access, 3.0–3.6 V supply, but uses different command set and lacks 12 V RESET override | No boot block lockout override - limits recovery options in field-deployed units | Choose only if SST's faster 70 µs byte programming and lower 18 mA active current outweigh missing reset override |
Compared with AT49BV002-12JI, the AT49BV002-12TC offers smaller TSOP footprint and commercial temp grade; compared with SST39VF020, it provides unique 12 V RESET-based boot block recovery essential for mission-critical embedded firmware resilience.
Availability
AT49BV002-12TC is available at Aetrix Electronics and suitable for industrial HMI, telecom bootloader, and medical device configuration storage requiring stable component supply and long-term obsolescence management.
Supply support for AT49BV002-12TC 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 the AT49BV series.
The AT49BV002-12TC belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for in-system reprogrammability in 3V embedded systems where low-voltage operation and boot-code integrity are critical.
FAQ
What is the memory organization of the AT49BV002-12TC?
The AT49BV002-12TC contains 2 Mbit of memory organized as 262,144 words × 8 bits (256K × 8). Its physical address space is divided into a 16K-byte boot block (3C000H–3FFFFH), two 8K-byte parameter blocks, and two main memory blocks totaling 224K bytes (96K + 128K). This structure supports hierarchical firmware storage with dedicated protected regions.
Does the AT49BV002-12TC support in-system programming without high-voltage signals?
Yes, the AT49BV002-12TC performs all programming and erase operations using only its 2.7–3.6 V VCC supply - no external 12 V or 5 V programming voltage is required. Commands are entered via standard WE/CE/OE timing with specific address/data sequences, making it fully compatible with 3.3 V microcontroller buses.
How does the boot block lockout feature work on the AT49BV002-12TC?
The AT49BV002-12TC's boot block lockout is enabled via a six-cycle command sequence writing to addresses 5555H/2AAAH. Once activated, the 16K-byte boot block (3C000H–3FFFFH) becomes immune to erase/program commands at ≤5.5 V. However, applying 12 V ± 0.5 V to the RESET pin during operations restores full reprogrammability - a unique recovery mechanism not found in most Flash devices.
What are the valid status detection methods during programming or erase on the AT49BV002-12TC?
The AT49BV002-12TC provides two hardware-supported status detection methods: DATA polling (I/O7 toggles to complement of written data until completion) and Toggle Bit (I/O6 toggles between 0 and 1 during operation, then stabilizes). Both allow real-time monitoring without fixed delays or external timers, improving system responsiveness during firmware updates.
Is the AT49BV002-12TC pin-compatible with other members of the AT49BV/LV002 family?
Yes, the AT49BV002-12TC shares identical pinout and electrical interface with all AT49BV/LV002(N)(T) variants in TSOP-32 (32T) package, including AT49BV002T-12TC and AT49LV002T-12TC. Differences lie in voltage range (BV: 2.7–3.6 V; LV: 3.0–3.6 V), access time grading (-12 = 120 ns), and internal boot block mapping - not pin assignment or signal definitions.
AT49BV002-12TC 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:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 120 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49BV002-12TC FAQ
1.How can I place an order for AT49BV002-12TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002-12TC 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 AT49BV002-12TC reliable?
The price and inventory of AT49BV002-12TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002-12TC is usually 5 days.
3.What payment methods are accepted for AT49BV002-12TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002-12TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002-12TC?
AT49BV002-12TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002-12TC 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 AT49BV002-12TC?
For technical support, including AT49BV002-12TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002-12TC requirements.
6.How does Aetrix verify that AT49BV002-12TC is sourced from the original manufacturer or authorized distributors?
All AT49BV002-12TC 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 AT49BV002-12TC meets industry standards.
7.What is the process for return or replacement of AT49BV002-12TC?
All AT49BV002-12TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002-12TC, 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 AT49BV002-12TC part is unused and in its original packaging.
Return procedure for AT49BV002-12TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV002-12TC 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…
