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Microchip Technology AT49BV160ST-70CU
- Part No.:
- AT49BV160ST-70CU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 64-VBGA, CSPBGA
- Datasheet:
-
AT49BV160ST-70CU.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 64CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,368
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Product details
Overview
AT49BV160ST-70CU from Atmel is a 16-Mbit (1M × 16) single-supply 3.0V-only Flash memory with 70 ns access time, sector-erase architecture (31 × 64KB + 8 × 8KB sectors), and secure lock/freeze features for irreversible region protection. It supports in-system programming and operates across 2.65–3.6V, targeting boot code storage in embedded controllers.
For engineers reviewing the AT49BV160ST-70CU datasheet, AT49BV160ST-70CU pinout, AT49BV160ST-70CU application, or AT49BV160ST-70CU equivalent, key selection criteria include sector configuration (bottom-boot), CFI compliance, CBGA-64 packaging, suspend/resume capability during erase/program, and 100,000-cycle endurance.
Technical Context
The AT49BV160ST-70CU implements a bottom-boot block configuration: 31 large sectors (64KB each) occupy addresses 00000–F7FFF, while 8 small sectors (8KB each) reside at F8000–FFFFF. Its CFI-compliant interface enables standardized JEDEC command sets and auto-query identification.
Secure locking operates per-sector via 128-bit protection register; freeze mode permanently disables further secure lock activation. Suspend/resume allows concurrent read/program operations across sectors without halting ongoing erase cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit words) |
| Access Time | 70 ns - guarantees timing compatibility with 14 MHz bus interfaces |
| Supply Voltage | 2.65–3.6 V - enables direct connection to 3.3V logic without level-shifting |
| Erase Endurance | 100,000 cycles - supports field firmware updates over product lifetime |
| Sector Architecture | 31 × 64KB + 8 × 8KB - bottom-boot layout places small boot sectors at highest address range |
| Program Time | 10 µs per word - enables fast patch writes without system stall |
| Standby Current | 15 µA - minimizes power in sleep-mode embedded applications |
Pinout & Package
AT49BV160ST-70CU uses a 64-ball Chip-scale Ball Grid Array (CBGA) package (64C1, 9 × 10 × 1.0 mm body, 1.0 mm ball pitch), RoHS-compliant and Pb/halide-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing space |
| I/O0–I/O15 | Data Bus | 16-bit bidirectional data path compatible with 16-bit microcontroller buses |
| CE | Chip Enable | Active-low chip select enabling shared-bus operation with OE/WE coordination |
| OE | Output Enable | Controls output buffer tri-state; used with CE to prevent bus contention during reads |
| WE | Write Enable | Initiates write/erase commands when CE and OE are active |
| VPP | Write Protection & Program Voltage | Enables accelerated programming and hardware write-protection when tied to VCC |
| RESET | Device Initialization | Hardware reset input that returns device to read mode and clears internal state |
| VCCQ | Output Power Supply | Separate 3.3V supply for I/O buffers, decoupled from core VCC for noise immunity |
| NC | No Connect | Unbonded balls - no electrical function; must be left floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Suspend/Resume Erase & Program | Allows real-time read access to any sector while erasing or programming another - critical for interrupt-driven boot loaders |
| Bottom-Boot Sector Layout | Places 8 × 8KB boot sectors at top of address map (F8000–FFFFF), enabling safe execution of boot code during main array updates |
| Secure Lock + Freeze | Per-sector irreversible locking plus freeze command prevents further lock activation - meets secure firmware storage requirements |
| Common Flash Interface (CFI) | Standardized JEDEC query table enables automatic driver detection and cross-vendor tool compatibility |
| Low-Power Standby | 15 µA standby current supports battery-backed systems and energy-sensitive IoT edge nodes |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing certified boot firmware and safety-critical configuration in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing deterministic 70 ns read access during cold start and secure sector-erase for firmware patches. Use Value: Bottom-boot layout isolates boot code from main application updates; secure lock prevents tampering with regulatory-approved firmware images. |
Use Scenario: Holding FDA-cleared boot loader and diagnostic calibration data in portable ultrasound and infusion pumps. IC Role / Device Role / Timing Role: Trusted flash storage with freeze-enabled secure regions ensuring immutable boot integrity and audit-trail-capable update history. Use Value: 100,000 erase cycles support multi-year recalibration cycles; CFI compliance simplifies integration into medical-grade bootloader frameworks. |
| Automotive Infotainment Head Unit | Network Router Boot Image Storage |
Use Scenario: Hosting primary boot image and fail-safe recovery partition in automotive head units requiring AEC-Q100 alignment (per Atmel qualification). IC Role / Device Role / Timing Role: High-reliability Flash memory delivering 70 ns read performance for rapid UI initialization and sector-level firmware rollback. Use Value: Suspend/resume enables concurrent GUI rendering and background OTA update verification without system freeze. |
Use Scenario: Storing dual-stage boot images (primary + fallback) and cryptographic keys in enterprise-grade network routers. IC Role / Device Role / Timing Role: Secure, field-programmable nonvolatile memory with 128-bit protection register for key isolation and boot image authentication. Use Value: Freeze feature locks key storage sectors permanently after provisioning, meeting FIPS 140-2 Level 2 physical security requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1601C-70-4C-EKE | Same density (16Mbit), 70 ns access, but uses PLCC-44 package and lacks secure lock/freeze features | No hardware-enforced sector lockdown; relies on software-based protection only | Select when board space permits PLCC and security requirements are met via external MCU control |
| MX29LV160ETTI-70G | 16Mbit, 70 ns, TSOP-48 package; supports top-boot only and has no freeze functionality | Top-boot configuration places small sectors at lowest address - incompatible with bottom-boot bootloaders | Choose only if existing design uses top-boot layout and does not require irreversible sector locking |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV160ST-70CU uniquely delivers bottom-boot sector mapping, hardware freeze-enabled secure locking, and CBGA-64 packaging - essential for space-constrained, high-security embedded boot applications.
Availability
AT49BV160ST-70CU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, and automotive infotainment head unit applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT49BV160ST-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
Atmel Corporation (now part of Microchip Technology) is a fabless semiconductor company specializing in microcontrollers, nonvolatile memory, and security ICs for embedded systems.
The AT49BV160ST-70CU belongs to Atmel's secure Flash memory product line, designed specifically for applications demanding tamper-resistant boot code storage, field firmware updates, and hardware-enforced sector protection in industrial and medical environments.
FAQ
What is the boot block configuration of the AT49BV160ST-70CU?
The AT49BV160ST-70CU uses a bottom-boot configuration: its eight 8KB sectors are located at the highest address range (F8000–FFFFF), while thirty-one 64KB sectors occupy lower addresses (00000–F7FFF). This layout ensures boot code resides in protected, easily accessible sectors at system startup - a requirement for many ARM and MIPS-based bootloaders. The AT49BV160ST-70CU datasheet confirms this mapping in Section 4, "AT49BV160ST – Sector Address Table."
Does the AT49BV160ST-70CU support Common Flash Interface (CFI)?
Yes, the AT49BV160ST-70CU fully complies with the Common Flash Interface standard. It implements the JEDEC JESD68 CFI query table, enabling host systems to automatically detect device geometry, command sets, and timing parameters without hard-coded drivers. This feature simplifies firmware development and supports interoperability across multiple Flash vendors - confirmed in the "Features" section and Section 1.2 of the AT49BV160ST-70CU summary document.
How does the secure lock and freeze feature work on the AT49BV160ST-70CU?
The AT49BV160ST-70CU allows per-sector secure locking via a 128-bit protection register; once locked, a sector cannot be erased or programmed by any software or hardware means. The freeze command permanently disables further lock activation - an irreversible action. Both features are hardware-enforced and independent of VPP voltage. These capabilities are detailed in Sections 1 and 2 of the AT49BV160ST-70CU summary, emphasizing their use in certified firmware storage.
What is the purpose of the VPP pin on the AT49BV160ST-70CU?
On the AT49BV160ST-70CU, the VPP pin serves dual functions: it enables accelerated program operations when driven to VCC, and provides hardware write protection when held low. Unlike older Flash devices, VPP is not required for standard 3.3V operation - the AT49BV160ST-70CU performs all read/write/erase functions using only VCC (2.65–3.6V). This flexibility is explicitly stated in the "Features" list and Pin Configuration section of the AT49BV160ST-70CU documentation.
Is the AT49BV160ST-70CU pin-compatible with the AT49BV160S-70CU?
No, the AT49BV160ST-70CU and AT49BV160S-70CU are not pin-compatible due to differing sector address mappings - the 'T' suffix denotes bottom-boot configuration, while the base part uses top-boot. Although both share identical CBGA-64 packaging and pin functions, their sector layouts are inverted, requiring different address decoding and firmware handling. This distinction is clearly defined in Sections 3 and 4 of the AT49BV160ST-70CU summary document.
AT49BV160ST-70CU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 64-VBGA, CSPBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 1M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- 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:
- 64-CBGA (9x10)
AT49BV160ST-70CU FAQ
1.How can I place an order for AT49BV160ST-70CU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV160ST-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 AT49BV160ST-70CU reliable?
The price and inventory of AT49BV160ST-70CU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV160ST-70CU is usually 5 days.
3.What payment methods are accepted for AT49BV160ST-70CU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV160ST-70CU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV160ST-70CU?
AT49BV160ST-70CU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV160ST-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 AT49BV160ST-70CU?
For technical support, including AT49BV160ST-70CU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV160ST-70CU requirements.
6.How does Aetrix verify that AT49BV160ST-70CU is sourced from the original manufacturer or authorized distributors?
All AT49BV160ST-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 AT49BV160ST-70CU meets industry standards.
7.What is the process for return or replacement of AT49BV160ST-70CU?
All AT49BV160ST-70CU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV160ST-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 AT49BV160ST-70CU part is unused and in its original packaging.
Return procedure for AT49BV160ST-70CU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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