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Microchip Technology AT49SV802A-90CI
- Part No.:
- AT49SV802A-90CI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-VFBGA, CSPBGA
- Datasheet:
-
AT49SV802A-90CI.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,605
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Product details
Overview
AT49SV802A-90CI from Microchip Technology (formerly Atmel) is a 1.8 V-only, 8 Mbit parallel NOR Flash memory organized as 524,288 × 16-bit or 1,048,576 × 8-bit, featuring 90 ns access time, sector erase architecture with 23 sectors (15 × 64 KB + 8 × 8 KB), and single-voltage 1.65–1.95 V operation. It supports in-system programming in embedded boot code storage applications.
For engineers reviewing the AT49SV802A-90CI datasheet, AT49SV802A-90CI pinout, AT49SV802A-90CI application, or AT49SV802A-90CI equivalent, key selection considerations include its TSOP-48 package, sector lockdown capability for secure boot code, suspend/resume functionality during erase/program, CFI compliance for auto-configuration, and 100,000 erase cycles endurance.
Technical Context
The AT49SV802A-90CI implements a command-based parallel interface with CE/OE/WE control logic and BYTE pin-selectable x8/x16 data bus configuration. Its internal write state machine handles embedded program/erase algorithms without external timing control.
It integrates dual status detection-RDY/BUSY open-drain output plus I/O5/I/O6/I/O7 status bits-and supports both Data Polling and Toggle Bit methods to monitor operation completion. The device includes a factory-programmed 64-bit block and user-programmable/lockable 64-bit block within its 128-bit protection register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (524,288 × 16 or 1,048,576 × 8), enabling compact firmware storage in resource-constrained systems |
| Access Time | 90 ns at 1.8 V, meeting real-time read latency requirements for boot ROM and code execution |
| Erase Architecture | 23-sector layout: fifteen 64 KB (32K word) + eight 8 KB (4K word) sectors, allowing granular firmware updates without full chip erase |
| Program Time | 12 µs per byte/word, supporting fast field firmware patching in production and service environments |
| Erase Endurance | Minimum 100,000 erase cycles per sector, ensuring long-term reliability in reprogrammable embedded controllers |
| Supply Voltage | 1.65–1.95 V only, eliminating level-shifting needs in modern low-voltage SoC interfaces |
| Common Flash Interface | CFI-compliant (98h query command), enabling automatic driver initialization and multi-vendor firmware compatibility |
| Operating Temperature | –40°C to +85°C (Industrial grade), validated for use in automotive body control modules and industrial HMIs |
Pinout & Package
AT49SV802A-90CI is packaged in a 48-pin Thin Small Outline Package (TSOP Type I, 12 × 20 mm, 0.5 mm pitch), pin-compatible with industry-standard parallel Flash footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 8 Mbit addressing; A-1 function on I/O15 in byte mode |
| I/O0–I/O15 / I/O15(A-1) | Data I/O / LSB Address | x16 mode: bidirectional data bus; x8 mode: I/O0–I/O7 active, I/O15 repurposed as A-1 input |
| CE | Chip Enable | Active-low chip select enabling memory mapping into processor address space |
| OE | Output Enable | Active-low read strobe; used with CE to prevent bus contention during shared-memory access |
| WE | Write Enable | Active-low write strobe triggering command latching and embedded program/erase sequences |
| BYTE | Bus Width Select | Logic high = x16 mode (I/O0–I/O15 active); logic low = x8 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 of multiple devices on shared status line |
| RESET | Hardware Initialization | Pulse low ≥500 ns halts current operation and forces return to read/standby mode |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Suspend/Resume | Interrupts erase of one sector to read/program another - enables concurrent firmware update and runtime code execution |
| Program Suspend/Resume | Pauses byte/word programming to allow immediate read access elsewhere - critical for real-time interrupt handling during flash writes |
| Sector Lockdown | Per-sector write-protection activated via 6-cycle command - secures boot loader while permitting application partition updates |
| 128-bit Protection Register | Factory-block (64-bit) + user-block (64-bit, lockable) - supports cryptographic key binding and anti-cloning in secure boot designs |
| Hardware Data Protection | VCC sense (<1.65 V inhibits programming), 10 ms power-on delay, and OE/CE/WE gating - prevents spurious writes during power ramp |
| Green Packaging | Pb/Halide-free TSOP-48 - compliant with RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 2a |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module Boot ROM |
|---|---|
Use Scenario: Storing firmware and configuration data in programmable logic controllers requiring field-upgradable logic programs and persistent parameter retention across power cycles. IC Role / Device Role / Timing Role: Parallel NOR Flash acting as nonvolatile code storage with direct CPU bus interface and deterministic 90 ns read access for real-time instruction fetch. Use Value: Sector lockdown protects bootloader integrity while allowing independent update of application logic sectors; 100,000-cycle endurance supports decades of maintenance cycles in unattended installations. |
Use Scenario: Hosting boot code and calibration tables in automotive body control units (BCUs), where secure startup and ECU reprogramming over CAN are required. IC Role / Device Role / Timing Role: Primary boot memory mapped to microcontroller's reset vector, providing verified firmware before CAN stack initialization. Use Value: CFI support enables generic flash driver reuse across vehicle platforms; 128-bit protection register stores asymmetric keys for UDS secure boot authentication. |
| Medical Device Configuration Memory | Networking Equipment Bootloader Storage |
Use Scenario: Retaining regulatory-critical calibration coefficients and device-specific operational parameters in Class II medical instruments subject to FDA 21 CFR Part 11 audit trails. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed via parallel bus during power-on self-test (POST), with hardware write protection preventing accidental corruption. Use Value: Hardware data protection (VCC sense + 10 ms delay) ensures no unintended writes during brown-out conditions; sector erase architecture isolates calibration data from firmware updates. |
Use Scenario: Storing primary bootloader (e.g., U-Boot) and FPGA bitstreams in enterprise switches and routers requiring zero-downtime firmware upgrades. IC Role / Device Role / Timing Role: Dual-image boot memory supporting A/B partitioning, where one sector holds active image and another holds update candidate. Use Value: Erase suspend allows background download of new image while executing from protected sector; RDY/BUSY pin enables precise timing of upgrade handoff without polling overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF800A-90-4C-EKE | 90 ns access, 8 Mbit, 3.0–3.6 V supply - requires level-shifting for 1.8 V systems; no CFI support | Lacks suspend/resume and sector lockdown; suitable only for legacy 3.3 V designs without secure boot requirements | Select only if migrating from SST39VF800A footprint and voltage domain; not drop-in compatible due to voltage mismatch and missing security features |
| MX29LV800CTTI-90G | 90 ns access, 8 Mbit, 3.0 V core (2.7–3.6 V range); supports CFI and sector protection but no suspend/resume | Compatible with 3.3 V systems; lacks program/erase suspend capability needed for real-time multitasking environments | Use when CFI and basic sector locking suffice and system cannot tolerate 1.8 V operation; verify timing margins with 3.3 V interface drivers |
Compared with SST39VF800A-90-4C-EKE and MX29LV800CTTI-90G, the AT49SV802A-90CI uniquely delivers 1.8 V single-supply operation with suspend/resume, sector lockdown, and full CFI - making it the only option for secure, low-power, real-time updatable boot memory in modern embedded platforms.
Availability
AT49SV802A-90CI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control module boot ROM, medical device configuration memory, and networking equipment bootloader storage requiring stable component supply and long-term lifecycle support.
Supply support for AT49SV802A-90CI 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 the AT49SV series of parallel NOR Flash memories, including documentation, validation, and long-term manufacturing commitments.
The AT49SV802A-90CI belongs to Atmel's legacy 1.8 V Flash product line, designed specifically for secure, in-system programmable boot code storage in industrial, automotive, and medical embedded systems requiring high reliability and firmware integrity.
FAQ
What is the operating voltage range for the AT49SV802A-90CI?
The AT49SV802A-90CI operates exclusively within 1.65 V to 1.95 V. It is not 3.3 V tolerant - applying voltages outside this range may cause permanent damage. All control inputs (CE, OE, WE, RESET, BYTE) accept 0–5.5 V logic levels, but I/O pins are limited to 0–VCC+0.6 V. This single-voltage design eliminates level shifters in 1.8 V SoC systems and is validated for industrial temperature operation.
Does the AT49SV802A-90CI support both x8 and x16 data bus configurations?
Yes, the AT49SV802A-90CI supports selectable x8 or x16 operation via the BYTE pin. When BYTE = HIGH, I/O0–I/O15 function as a 16-bit data bus; when BYTE = LOW, only I/O0–I/O7 are active as an 8-bit bus and I/O15 serves as the LSB address input (A-1). This flexibility allows integration with both 8-bit and 16-bit microcontrollers without redesigning the PCB layout.
How does sector lockdown work on the AT49SV802A-90CI?
Sector lockdown on the AT49SV802A-90CI is enabled per sector using a six-bus-cycle command. Once activated, the locked sector becomes read-only - no erase or program operations are permitted until the next power cycle or RESET pulse. Lockdown status is verified by reading address 00002H within the sector: I/O0 = HIGH indicates lockdown active. This feature is essential for protecting boot code while updating application firmware in adjacent sectors.
What methods does the AT49SV802A-90CI provide to detect program or erase completion?
The AT49SV802A-90CI offers three concurrent methods: (1) RDY/BUSY pin (open-drain, active-low), (2) Data Polling on I/O7 (complement-to-data or high-assertion depending on config register), and (3) Toggle Bit on I/O6 (toggles during operation, stops when complete). These can be used independently or in combination - for example, RDY/BUSY for hardware interrupt triggering and Data Polling for software polling fallback - ensuring robust operation under varying system constraints.
Is the AT49SV802A-90CI pin-compatible with other 48-pin TSOP Flash devices?
The AT49SV802A-90CI uses standard 48-pin TSOP Type I pinout (JEDEC MO-141AA), matching physical dimensions and lead pitch of common 8 Mbit parallel Flash parts. However, electrical and functional compatibility requires verification: voltage range (1.65–1.95 V only), command set (Atmel-specific), and feature support (e.g., suspend/resume) differ from 3.3 V devices like SST39VF800A. Direct replacement is not guaranteed without system-level validation.
AT49SV802A-90CI 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:
- 70ns
- Access Time:
- 90 ns
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-CBGA (6x8)
AT49SV802A-90CI FAQ
1.How can I place an order for AT49SV802A-90CI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49SV802A-90CI 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 AT49SV802A-90CI reliable?
The price and inventory of AT49SV802A-90CI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49SV802A-90CI is usually 5 days.
3.What payment methods are accepted for AT49SV802A-90CI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49SV802A-90CI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49SV802A-90CI?
AT49SV802A-90CI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49SV802A-90CI 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 AT49SV802A-90CI?
For technical support, including AT49SV802A-90CI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49SV802A-90CI requirements.
6.How does Aetrix verify that AT49SV802A-90CI is sourced from the original manufacturer or authorized distributors?
All AT49SV802A-90CI 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 AT49SV802A-90CI meets industry standards.
7.What is the process for return or replacement of AT49SV802A-90CI?
All AT49SV802A-90CI units undergo pre-shipment inspection (PSI). If there is an issue with AT49SV802A-90CI, 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 AT49SV802A-90CI part is unused and in its original packaging.
Return procedure for AT49SV802A-90CI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49SV802A-90CI Tags
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