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Microchip Technology AT49BV160C-70TU
- Part No.:
- AT49BV160C-70TU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV160C-70TU.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,246
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Product details
Overview
AT49BV160C-70TU from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16) single-supply 3.3V Flash memory IC with sector-erase architecture, 70 ns access time, and flexible hardware/software protection. It supports in-system programming in embedded controllers, BIOS storage, and firmware update modules where nonvolatile code/data retention and field reprogrammability are required.
For engineers reviewing the AT49BV160C-70TU datasheet, AT49BV160C-70TU pinout, AT49BV160C-70TU application, or AT49BV160C-70TU equivalent, key selection criteria include sector lock granularity (31 × 64KB + 8 × 8KB), erase suspend/resume capability, CFI compliance for auto-configuration, and dual VPP/WP hardware write protection.
Technical Context
The AT49BV160C-70TU implements a command-based Write State Machine (WSM) that manages embedded erase and program operations without external timing control. Its dual-sector protection scheme-Softlock (software-unlockable) and Hardlock (WP-pin-gated)-enables mixed-criticality firmware partitioning.
It features a 128-bit protection register with factory-programmed Sector A and user-programmable (and lockable) Sector B, plus Common Flash Interface (CFI) support for runtime device interrogation. The WSM status register (SR7–SR0) provides real-time operation state and error reporting-including VPP status, program/erase failure, and sector lock violation detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit words); enables compact firmware storage in space-constrained MCU boot loaders. |
| Access Time | 70 ns max; ensures deterministic read latency for real-time instruction fetch in 3.3V systems. |
| Supply Voltage | 2.65V to 3.6V single supply; eliminates need for separate VCC/VPP rails and simplifies power design. |
| Sector Architecture | 39 sectors: 31 × 64KB + 8 × 8KB; allows fine-grained firmware updates without erasing entire memory. |
| Program/Erase Endurance | ≥100,000 erase cycles per sector; supports frequent field firmware upgrades over product lifetime. |
| Standby Current | 13 µA typical; critical for low-power battery-backed applications such as industrial sensor nodes. |
| Common Flash Interface | CFI-compliant (98h query mode); enables OS/bootloader-agnostic flash initialization and parameter auto-detection. |
Pinout & Package
AT49BV160C-70TU is available in a 48-lead TSOP-I (Type 1) package with standard JEDEC footprint. Pin functions are electrically identical across TSOP and CBGA variants; this page documents the TSOP configuration used in the -70TU suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A19–A8 must be 0 for protection register access. |
| I/O0–I/O15 | Bidirectional Data Bus | 16-bit parallel interface; outputs high-impedance when CE or OE is high to prevent bus contention. |
| CE | Chip Enable | Active-low chip select; latches address/data on rising edge during command sequences. |
| OE | Output Enable | Active-low output control; toggling CE or OE latches status register contents for polling. |
| WE | Write Enable | Active-low write strobe; rising edge triggers command latch or data write in program/erase cycles. |
| VPP | Write Protection Voltage | Must be ≥1.5V for program/erase; <0.4V disables all writes-prevents accidental corruption during brownout. |
| WP | Hardware Sector Lock Control | Low = hardlocks enabled sectors permanently; high = overrides Hardlock for unlock via software command. |
| RESET | Device Initialization | Active-low reset halts ongoing WSM operation and forces return to read mode on release. |
Key Features
| Feature | Design Value |
|---|---|
| Erase Suspend/Resume | Allows reading or programming other sectors while one sector erase is paused-enables concurrent firmware update and execution. |
| Program Suspend/Resume | Permits reading any word during active word programming-supports real-time debug or status monitoring without interrupting write flow. |
| Flexible Sector Protection | Independent Softlock (software-unlockable) and Hardlock (WP-gated) per sector-enables secure bootloader + updatable application partitioning. |
| 128-bit Protection Register | Factory-programmed 64-bit ID + user-programmable 64-bit lockable sector-provides tamper-resistant device identity and secure key storage. |
| Hardware Data Protection | VCC sense (<1.8V inhibits program), VPP validation, and control pin logic (OE/CE/WE states) prevent unintended writes during power transitions. |
Applications
| Embedded Boot Memory | Firmware Update Module |
|---|---|
Use Scenario: Storing boot code for ARM Cortex-M or RISC-V microcontrollers requiring fast, reliable startup after power-on or reset. IC Role / Device Role / Timing Role: Nonvolatile code storage with 70 ns read access and automatic power-on read mode-eliminates external boot ROM and reduces boot latency. Use Value: Enables deterministic boot sequence without external configuration; sector protection prevents accidental overwrite of bootloader region. | Use Scenario: Field-upgradable firmware in industrial PLCs where new feature releases require safe in-service reprogramming. IC Role / Device Role / Timing Role: Dual-mode sector erase (31 × 64KB + 8 × 8KB) allows updating application code while preserving calibration data in protected 8KB sectors. Use Value: Erase suspend lets host CPU verify update integrity mid-process; CFI support enables generic flash driver reuse across product families. |
| BIOS/UEFI Storage | Secure Configuration Storage |
Use Scenario: Storing platform initialization firmware in x86-based edge gateways where BIOS integrity and recovery are critical. IC Role / Device Role / Timing Role: Hardlock-enabled top-boot sectors store immutable recovery code; WP pin physically disables modification during normal operation. Use Value: Prevents ransomware or malware from corrupting boot firmware-even if host OS is compromised-via hardware-enforced write disable. | Use Scenario: Storing cryptographic keys, MAC addresses, and device-specific calibration parameters in medical IoT sensors. IC Role / Device Role / Timing Role: 128-bit protection register with factory-programmed Sector A and user-lockable Sector B provides tamper-resistant identity and secure credential storage. Use Value: Sector B lock prevents post-deployment key extraction; status register bit SR1 detects and reports unauthorized write attempts to locked sectors. |
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 SST's SuperFlash technology with faster 18 µs word program time and no VPP pin. | Lacks VPP-based hardware write inhibit; relies solely on WP and software lock-less robust against voltage glitch attacks. | Preferred where fastest program time is critical and system-level VPP control is impractical. |
| MX29LV160ETTI-70G | 16Mbit, 70 ns, supports CFI and sector protection, but organized as 2M × 8-bit; requires wider data bus or byte-lane management. | Top-boot configuration only; lacks bottom-boot option-limits flexibility in legacy 8-bit bus designs requiring bottom-boot vector tables. | Best suited for 8-bit microcontroller interfaces or where pin compatibility with existing MX29LV designs is required. |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV160C-70TU uniquely combines VPP-based hardware write inhibition, bottom/top boot configurability, and explicit erase suspend-making it optimal for safety-critical embedded systems requiring layered protection and concurrent operation.
Availability
AT49BV160C-70TU is available at Aetrix Electronics and suitable for embedded boot memory, firmware update modules, BIOS/UEFI storage, and secure configuration storage requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV160C-70TU 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 AT49BV160C-70TU belongs to Atmel's parallel-interface Flash memory product line, designed specifically for cost-sensitive, high-reliability embedded systems requiring in-system programmability and hardware-assisted data integrity.
FAQ
What is the function of the VPP pin on the AT49BV160C-70TU?
The VPP pin on the AT49BV160C-70TU provides hardware-level write protection: program and erase operations are inhibited when VPP < 0.4V, and enabled only when VPP ≥ 1.5V. This prevents accidental writes during power-up/down or brownout conditions. The pin must not be left floating and requires proper decoupling per the datasheet. Unlike many Flash devices, the AT49BV160C-70TU uses VPP as a functional enable-not just a high-voltage programming rail-making it essential for safe operation.
Does the AT49BV160C-70TU support both top-boot and bottom-boot configurations?
Yes, the AT49BV160C-70TU supports configurable boot block orientation. The device can be ordered or configured (via bonding option) with either top-boot (larger sectors at highest address) or bottom-boot (larger sectors at lowest address) layout. This allows alignment with processor reset vector requirements-e.g., bottom-boot for x86-compatible reset vectors at 0xFFFF0, or top-boot for ARM exception vector placement at high memory. The boot configuration is fixed per unit and specified in the part number suffix.
How does the AT49BV160C-70TU handle sector protection conflicts between WP pin state and software lock commands?
The AT49BV160C-70TU resolves sector protection conflicts via priority rules defined in Table 4-2: when WP = low, Hardlock protection cannot be overridden-even by an Unlock command-ensuring physical write disable. When WP = high, Hardlock is suspended and software commands (Unlock, Softlock, Hardlock) function normally. Softlock remains independently controllable regardless of WP state. This dual-layer enforcement means AT49BV160C-70TU guarantees read-only access to Hardlocked sectors under hardware fault conditions.
Can the AT49BV160C-70TU be used in 1.8V I/O systems?
No-the AT49BV160C-70TU is a 3.3V core device with VCCQ pin supporting 1.8V–2.2V I/O levels only when VCC is regulated to 2.65V–3.0V and VCCQ to 2.0V ±10%. Its I/O pins are not 1.8V-tolerant under full VCC (3.3V) operation. Driving inputs above VCCQ + 0.6V risks damage. For true 1.8V-native interfaces, consider newer Microchip/Atmel serial NOR or parallel Flash with dedicated 1.8V I/O support-not the AT49BV160C-70TU.
What happens if a program operation is interrupted by a RESET signal on the AT49BV160C-70TU?
If a RESET signal is asserted during an active word program cycle on the AT49BV160C-70TU, the data at the target memory location becomes corrupted and unpredictable. The Write State Machine halts immediately, outputs enter high-impedance, and the device returns to read mode-but no verification or rollback occurs. The status register will not reflect completion, and SR4 (Program Status) may indicate failure. Recovery requires manual verification, clearing the status register, and reissuing the program command. Datasheet explicitly warns against resetting during programming.
AT49BV160C-70TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-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:
- 16Mbit
- Memory Organization:
- 1M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 120µs
- 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-TSOP
AT49BV160C-70TU FAQ
1.How can I place an order for AT49BV160C-70TU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV160C-70TU 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 AT49BV160C-70TU reliable?
The price and inventory of AT49BV160C-70TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV160C-70TU is usually 5 days.
3.What payment methods are accepted for AT49BV160C-70TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV160C-70TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV160C-70TU?
AT49BV160C-70TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV160C-70TU 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 AT49BV160C-70TU?
For technical support, including AT49BV160C-70TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV160C-70TU requirements.
6.How does Aetrix verify that AT49BV160C-70TU is sourced from the original manufacturer or authorized distributors?
All AT49BV160C-70TU 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 AT49BV160C-70TU meets industry standards.
7.What is the process for return or replacement of AT49BV160C-70TU?
All AT49BV160C-70TU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV160C-70TU, 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 AT49BV160C-70TU part is unused and in its original packaging.
Return procedure for AT49BV160C-70TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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