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Microchip Technology AT49BV160-90TI
- Part No.:
- AT49BV160-90TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV160-90TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,217
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Product details
Overview
AT49BV160-90TI from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) 3.0V-only parallel Flash memory IC used for non-volatile code and data storage in embedded systems. It features 70 ns access time, sector erase architecture with 31 × 64 KB + 8 × 8 KB sectors, 20 µs word program time, and supports in-system programming via single 2.65–3.3V supply. It is commonly deployed in boot code storage for industrial controllers and legacy microprocessor-based designs.
For engineers reviewing the AT49BV160-90TI datasheet, AT49BV160-90TI pinout, AT49BV160-90TI application, or AT49BV160-90TI equivalent, key selection considerations include TSOP-48 package compatibility, 16-bit/8-bit mode support (fixed word mode per pinout), sector lockdown security, suspend/resume capability during erase/program, and VPP-assisted accelerated programming at 5V or 12V.
Technical Context
The AT49BV160-90TI implements a command-register-based architecture with internal write state machine, supporting standard microprocessor bus timing for read, byte/word program, and sector/chip erase operations. Its dual-mode I/O interface (x16/x8) is fixed to word mode due to absence of BYTE pin - confirmed by pin configuration diagrams and functional description stating "AT49BV160(T) always operates in word mode".
It integrates hardware data protection (VCC sense, noise filtering, CE/OE/WE inhibit), 128-bit user-programmable protection register (with factory-block A and lockable user-block B), and status reporting via Data Polling (I/O7), Toggle Bit (I/O6), and dedicated RDY/BUSY output - though RDY/BUSY is only present on AT49BV161(T), not AT49BV160-90TI per pinout and documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit or 2,097,152 × 8-bit) |
| Access Time | 90 ns max - defines maximum read latency under worst-case VCC and temperature conditions |
| Supply Voltage | 2.65V to 3.3V - enables direct interfacing with 3.3V logic without level shifters |
| Program Time | 20 µs per word - determines minimum write cycle duration for firmware updates |
| Sector Erase Time | 300 ms max per sector - impacts field-upgrade granularity and downtime |
| Standby Current | 10 µA - critical for low-power hold states in battery-backed systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded applications |
Pinout & Package
AT49BV160-90TI is packaged in a 48-pin Thin Small Outline Package (TSOP Type I), 12 × 20 mm body, 0.5 mm pitch. Pin functions are validated per official Microchip datasheet Rev. 1427L–FLASH–02/03, Figure "TSOP Top View Type 1".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 not present (no BYTE pin → fixed x16 mode) |
| I/O0–I/O15 | Data I/O (x16) | 16-bit bidirectional data bus; no byte-mode operation - all 16 lines active in all configurations |
| CE | Chip Enable | Active-low chip select; required low with OE low and WE high for read access |
| OE | Output Enable | Active-low output control; prevents bus contention when high |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and programming |
| VPP | Program/Erase Supply | Enables accelerated programming/erase at 5V or 12V; inhibits writes if <0.8V |
| RESET | Device Initialization | Hardware reset input; forces high-impedance outputs and returns device to read/standby mode |
| RDY/BUSY | Status Output | Open-drain signal - absent on AT49BV160; present only on AT49BV161 variants per datasheet |
| VCCQ | Output Driver Supply | Separate 3.3V supply for I/O drivers; must tie to VCC for standard operation |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | 39 independently erasable sectors (31 × 64 KB + 8 × 8 KB) enable selective firmware updates without full chip erase |
| Erase/Program Suspend | Allows interruption of erase/program to read from or program other sectors - essential for real-time system responsiveness |
| 128-bit Protection Register | Factory-programmed 64-bit block + user-lockable 64-bit block provides secure boot code and configuration storage |
| Sector Lockdown | Per-sector write-protection activation prevents accidental overwrite of critical boot or calibration data |
| Single-Voltage In-System Programming | Eliminates need for external 12V programming voltage in most use cases - simplifies field update infrastructure |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded Boot Memory |
|---|---|
Use Scenario: Storing boot loader and real-time OS kernel in programmable logic controllers requiring field-upgradable firmware without hardware rework. IC Role / Device Role / Timing Role: Non-volatile parallel Flash memory providing x16 interface to 16-bit microcontroller bus; 90 ns access ensures deterministic boot timing. Use Value: Sector lockdown protects bootloader integrity while allowing application partition updates; suspend/resume avoids system freeze during background firmware patching. | Use Scenario: Replacing EPROM in aging medical instrument control boards where PCB layout and timing margins preclude newer serial Flash solutions. IC Role / Device Role / Timing Role: Drop-in parallel Flash replacement for 27C010/27C020 EPROMs; matches 48-pin TSOP footprint and 16-bit bus interface. Use Value: 2.65–3.3V single-supply operation eliminates need for 5V/12V programming circuitry; 10 µA standby current extends battery backup life. |
| Automotive Diagnostic Module Code Storage | Point-of-Sale Terminal Configuration Memory |
Use Scenario: Holding diagnostic firmware and vehicle-specific calibration tables in OBD-II scan tools operating across automotive temperature ranges. IC Role / Device Role / Timing Role: Industrial-temperature-rated Flash memory interfaced to 8051 or ARM7 derivative; CE/OE dual-control prevents bus conflicts during CAN interrupt servicing. Use Value: Hardware data protection (VCC sense, noise filtering) prevents spurious writes during engine cranking voltage dips; 300 ms sector erase enables rapid recalibration uploads. | Use Scenario: Storing localized language packs, tax rate tables, and payment protocol stacks in retail terminals with infrequent but mission-critical firmware updates. IC Role / Device Role / Timing Role: Secure non-volatile memory with 128-bit protection register; stores encrypted configuration blocks resistant to tampering. Use Value: Sector lockdown isolates payment stack from UI firmware partitions; VPP acceleration reduces update time during store closing windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1601-90-4C-EKE | 90 ns access, 16 Mbit, 3.0–3.6V supply, TSOP-48, but lacks VPP pin and sector lockdown | No hardware write protection or accelerated programming; relies on software locks only | Choose when VPP complexity is undesirable and security requirements are minimal |
| MX29LV160ETTI-90G | 90 ns access, 16 Mbit, 3.0–3.6V, TSOP-48, includes CFI-compliant command set and 12-byte protection registers | CFI support simplifies auto-detection in generic programmers; no 128-bit register or RDY/BUSY | Prefer for standardized toolchain integration where CFI compliance is required |
Compared with SST39VF1601-90-4C-EKE and MX29LV160ETTI-90G, the AT49BV160-90TI uniquely combines VPP-accelerated programming, 128-bit factory/user protection register, and hardware-enforced sector lockdown - making it optimal for safety-critical or anti-tamper embedded boot applications where firmware integrity is non-negotiable.
Availability
AT49BV160-90TI is available at Aetrix Electronics and suitable for industrial PLCs, legacy embedded boot systems, automotive diagnostic modules, and point-of-sale terminals requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV160-90TI 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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and non-volatile memory solutions, with broad industrial and automotive qualification.
The AT49BV160-90TI belongs to Microchip's legacy parallel Flash memory product line, designed specifically for drop-in replacement of EPROMs and early-generation Flash in space-constrained, reliability-critical embedded systems.
FAQ
What is the correct power supply range for reliable operation of the AT49BV160-90TI?
The AT49BV160-90TI requires a VCC supply between 2.65V and 3.3V for guaranteed functionality, including read, program, and erase operations. Operation below 2.65V disables programming via hardware data protection (VCC sense), and exceeding 3.3V risks violating absolute maximum ratings. VCCQ must be tied to VCC for standard 3.3V I/O drive levels.
Does the AT49BV160-90TI support byte-mode operation like the AT49BV161 series?
No, the AT49BV160-90TI does not support byte-mode operation. Its pinout lacks the BYTE input pin, and the datasheet explicitly states that "AT49BV160(T) always operates in the word mode." All 16 data lines (I/O0–I/O15) are active, and the device cannot be configured for 8-bit bus interface.
Is the RDY/BUSY pin available on the AT49BV160-90TI package?
No, the RDY/BUSY pin is not present on the AT49BV160-90TI. Per the official Microchip datasheet Rev. 1427L–FLASH–02/03, RDY/BUSY is only implemented on AT49BV/LV161(T) variants. For AT49BV160-90TI, end-of-operation detection must rely on Data Polling (I/O7), Toggle Bit (I/O6), or the VPP status bit (I/O3).
How is sector lockdown enabled and verified on the AT49BV160-90TI?
Sector lockdown is enabled using the six-bus-cycle Sector Lockdown command with the target sector address. Once locked, the sector becomes read-only until power cycle or RESET. Verification is performed in Software Product Identification mode: reading address 00002H within a sector returns I/O0 = high if locked, low if unlocked - a method confirmed for AT49BV160-90TI in the "Sector Lockdown Detection" section.
Can the AT49BV160-90TI be programmed using only the VCC supply, or is VPP mandatory?
The AT49BV160-90TI can be programmed using only the VCC supply (2.65–3.3V); VPP is optional and used solely to accelerate program/erase cycles. When VPP is ≤ VCC, the device uses VCC. When VPP is 5.0V ± 0.5V or 12.0V ± 0.5V, programming/erase completes faster - but VPP is not required for basic functionality.
AT49BV160-90TI 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:
- 2M x 8, 1M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 200µs
- Access Time:
- 90 ns
- Voltage - Supply:
- 2.65V ~ 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49BV160-90TI FAQ
1.How can I place an order for AT49BV160-90TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV160-90TI 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 AT49BV160-90TI reliable?
The price and inventory of AT49BV160-90TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV160-90TI is usually 5 days.
3.What payment methods are accepted for AT49BV160-90TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV160-90TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV160-90TI?
AT49BV160-90TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV160-90TI 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 AT49BV160-90TI?
For technical support, including AT49BV160-90TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV160-90TI requirements.
6.How does Aetrix verify that AT49BV160-90TI is sourced from the original manufacturer or authorized distributors?
All AT49BV160-90TI 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 AT49BV160-90TI meets industry standards.
7.What is the process for return or replacement of AT49BV160-90TI?
All AT49BV160-90TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV160-90TI, 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 AT49BV160-90TI part is unused and in its original packaging.
Return procedure for AT49BV160-90TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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