My Inquiry
My Account
Microchip Technology AT49BV802AT-70CU
- Part No.:
- AT49BV802AT-70CU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-VFBGA, CSPBGA
- Datasheet:
-
AT49BV802AT-70CU.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,350
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49BV802AT-70CU from Microchip Technology (formerly Atmel) is a 8-Mbit (512K × 16 / 1M × 8) single-supply 3V-only Flash memory IC with sector erase architecture, 70 ns access time, and dual-mode byte/word data interface. It supports in-system programming in embedded controllers, BIOS storage, and industrial firmware updates.
For engineers reviewing the AT49BV802AT-70CU datasheet, AT49BV802AT-70CU pinout, AT49BV802AT-70CU application, or AT49BV802AT-70CU equivalent, key selection considerations include sector lockdown capability, suspend/resume for concurrent read/program operations, CFI compliance, TSOP/CBGA package options, and 100,000 erase cycle endurance.
Technical Context
The AT49BV802AT-70CU implements a 23-sector architecture with eight 8K-byte (4K-word) and fifteen 64K-byte (32K-word) sectors - distinct from the AT49BV802A variant's sector layout. Its command-set-driven operation uses six-byte sequences for chip/sector erase and lockdown, and supports both hardware and software product identification modes.
It features three status detection methods: READY/BUSY open-drain output, Data Polling on I/O7, and Toggle Bit on I/O6 - all configurable via a two-bit status configuration register. The device integrates a factory-programmed 64-bit block and user-programmable 64-bit block in its 128-bit protection register, with lockable Block B for secure firmware keys.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (512K × 16 or 1M × 8), enabling compact firmware storage in space-constrained embedded systems |
| Access Time | 70 ns max - meets timing requirements for 14 MHz bus interfaces without wait states |
| Supply Voltage | 2.65 V to 3.6 V - compatible with 3.3 V logic rails and tolerant of ±3% regulation drift |
| Erase Endurance | ≥100,000 cycles per sector - supports field firmware updates over 10+ years in industrial deployments |
| Program Time | 12 µs per byte/word - enables fast patch writes during runtime without system stall |
| Sector Architecture | 23 sectors: 15 × 64K-byte + 8 × 8K-byte - allows granular protection of boot code (SA15–SA22) and application data |
| CFI Support | Yes - enables auto-detection of geometry, timing, and command set by host bootloader or flash translation layer |
Pinout & Package
AT49BV802AT-70CU is available in 48-lead TSOP (Type 1) and 48-ball CBGA packages. Both packages share identical pin functions and signal mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing; A-1 alias on I/O15 in byte mode |
| I/O0–I/O15 / I/O15(A-1) | Data I/O / LSB Address | Configurable x16 (word) or x8 (byte) interface; I/O15 serves as A-1 in byte mode for extended addressing |
| CE, OE, WE | Chip/Output/Write Enable | Three independent controls prevent bus contention; OE/CE low + WE high = read mode |
| BYTE | Interface Mode Select | Logic high = x16 word mode (I/O0–I/O15 active); logic low = x8 byte mode (I/O0–I/O7 active, I/O15 = A-1) |
| RDY/BUSY | Open-Drain Status Output | Active-low indicates ongoing program/erase; supports wired-OR across multiple devices on shared bus |
| RESET | Hardware Initialization | Pulse low ≥500 ns forces return to read/standby mode and clears suspend states |
Key Features
| Feature | Design Value |
|---|---|
| Erase Suspend/Resume | Interrupt sector erase to read/program other sectors - enables real-time firmware update without halting system operation |
| Program Suspend/Resume | Pause active byte/word programming to read any non-suspended location - supports diagnostic access during write |
| Sector Lockdown | Per-sector write-protection activated via six-cycle command - secures boot loader in SA15–SA22 while allowing app updates elsewhere |
| 128-bit Protection Register | Factory-block A (immutable ID) + user-block B (lockable) - stores cryptographic keys or calibration data with tamper resistance |
| Single-Pulse Program Mode | After six-byte entry sequence, subsequent writes require only WE pulse - reduces host CPU overhead during bulk programming |
Applications
| Industrial PLC Firmware Storage | Embedded Network Router Boot Code |
|---|---|
|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers operating in harsh temperature environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Non-volatile code storage with sector lockdown protecting bootloader integrity and CFI support enabling automatic flash driver initialization. Use Value: 100,000 erase cycles and 70 ns access ensure reliable field upgrades over 15-year product lifecycle without performance degradation. |
Use Scenario: Holding boot ROM and fail-safe recovery image in enterprise-grade network routers requiring secure, field-upgradable firmware. IC Role / Device Role / Timing Role: Dual-mode (x8/x16) interface matches SoC bus widths; 128-bit protection register stores secure boot keys resistant to replay attacks. Use Value: Erase suspend allows background firmware validation while maintaining packet forwarding - zero downtime during OTA updates. |
| Medical Device Diagnostic Log Storage | Automotive Body Control Module (BCM) Configuration |
|
Use Scenario: Recording time-stamped diagnostic events and calibration history in Class II medical equipment with regulatory traceability requirements. IC Role / Device Role / Timing Role: Sector-locked logging area (SA0–SA7) preserves audit trail; RDY/BUSY pin synchronizes log writes with safety-critical interrupt handlers. Use Value: Low 13 µA standby current extends battery life in portable diagnostics; hardware data protection prevents corruption during brown-out conditions. |
Use Scenario: Storing vehicle-specific configuration tables (lighting profiles, window settings, seat positions) in BCMs subject to automotive qualification (AEC-Q100 not claimed, but design-aligned). IC Role / Device Role / Timing Role: Top-boot configuration (SA0–SA7 as 8K sectors) isolates boot code; BYTE pin enables compatibility with legacy 8-bit microcontroller buses. Use Value: Fast 300 ms sector erase enables rapid reconfiguration at dealership; green Pb/Halide-free packaging meets ELV Directive compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF800A-70-4C-EKE | 8 Mbit, 70 ns, 3.0–3.6 V; lacks CFI, no suspend/resume, 10K erase cycles | No sector lockdown or protection register; limited to basic firmware storage without security features | Choose when cost sensitivity outweighs security and concurrent operation needs |
| MX29LV800CBTI-70G | 8 Mbit, 70 ns, 3.0–3.6 V; includes CFI and sector protection, but no suspend/resume or 128-bit register | Supports boot code protection and JEDEC-compliant commands, but cannot pause erase/program for real-time reads | Prefer when CFI compatibility is mandatory and suspend functionality is non-critical |
Compared with SST39VF800A-70-4C-EKE and MX29LV800CBTI-70G, the AT49BV802AT-70CU uniquely delivers concurrent read/program via suspend/resume, 100K-cycle endurance, and cryptographically relevant 128-bit protection - making it optimal for secure, long-lifecycle embedded firmware where update reliability and data integrity are primary.
Availability
AT49BV802AT-70CU is available at Aetrix Electronics and suitable for industrial control systems, networking infrastructure, medical diagnostics, and automotive body electronics requiring stable component supply and long-term obsolescence management.
Supply support for AT49BV802AT-70CU 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 technical and manufacturing continuity for the AT49BV series. The company specializes in secure, low-power microcontrollers and non-volatile memory solutions for industrial and automotive markets.
The AT49BV802AT-70CU belongs to Atmel's legacy parallel Flash memory product line, designed specifically for embedded systems requiring robust in-system programmability, sector-level security, and deterministic timing in resource-constrained environments.
FAQ
What is the difference between AT49BV802A and AT49BV802AT variants?
The AT49BV802AT-70CU differs from the AT49BV802A in sector layout: AT49BV802AT allocates the first 8 sectors (SA0–SA7) as 64K-byte blocks and the last 15 (SA8–SA22) as 8K-byte blocks, enabling top-boot configuration ideal for bootloader isolation. The AT49BV802A reverses this arrangement. Both share identical timing, voltage, and feature sets including suspend/resume and CFI.
Does AT49BV802AT-70CU support both x8 and x16 data bus configurations?
Yes, AT49BV802AT-70CU supports both configurations via the BYTE pin: logic high enables x16 (I/O0–I/O15 active), logic low enables x8 (I/O0–I/O7 active, I/O15 repurposed as A-1). This flexibility allows direct interfacing with 8-bit microcontrollers or 16-bit SoCs without external glue logic.
How does the sector lockdown feature work in AT49BV802AT-70CU?
AT49BV802AT-70CU implements per-sector lockdown using a six-cycle command (555h/AAh → AAAh/55h → 555h/80h → 555h/AAh → AAAh/55h → SA/60h). Once locked, a sector becomes read-only until power cycle or reset. Lock status is verified by reading address 00002h within the sector - I/O0 = high indicates lockdown enabled.
Can AT49BV802AT-70CU be used in automotive applications?
While AT49BV802AT-70CU is not AEC-Q100 qualified, its -40°C to +85°C operating range, 100,000 erase cycles, and hardware data protection (VCC sense, 10 ms power-on delay) align with non-safety-critical automotive use cases such as body control module configuration storage - provided system-level qualification is performed.
What status detection methods does AT49BV802AT-70CU provide for program/erase completion?
AT49BV802AT-70CU offers three independent methods: READY/BUSY pin (open-drain active-low), Data Polling on I/O7 (complement then true data), and Toggle Bit on I/O6 (repeated reads toggle until completion). All are configurable via the status register and usable concurrently for redundant verification in safety-critical systems.
AT49BV802AT-70CU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFBGA, CSPBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8, 512K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 200µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-CBGA (6x8)
AT49BV802AT-70CU FAQ
1.How can I place an order for AT49BV802AT-70CU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV802AT-70CU 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 AT49BV802AT-70CU reliable?
The price and inventory of AT49BV802AT-70CU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV802AT-70CU is usually 5 days.
3.What payment methods are accepted for AT49BV802AT-70CU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV802AT-70CU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV802AT-70CU?
AT49BV802AT-70CU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV802AT-70CU 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 AT49BV802AT-70CU?
For technical support, including AT49BV802AT-70CU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV802AT-70CU requirements.
6.How does Aetrix verify that AT49BV802AT-70CU is sourced from the original manufacturer or authorized distributors?
All AT49BV802AT-70CU 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 AT49BV802AT-70CU meets industry standards.
7.What is the process for return or replacement of AT49BV802AT-70CU?
All AT49BV802AT-70CU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV802AT-70CU, 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 AT49BV802AT-70CU part is unused and in its original packaging.
Return procedure for AT49BV802AT-70CU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV802AT-70CU 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…
