My Inquiry
My Account
Microchip Technology AT49BV161-70TI
- Part No.:
- AT49BV161-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV161-70TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49BV161-70TI from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply 3.0V Flash memory IC with sector erase architecture, 70 ns access time, and support for byte/word programming in TSOP or CBGA packages. It enables in-system reprogramming in embedded controllers, BIOS storage, and firmware update modules where reliable nonvolatile code storage and flexible sector protection are required.
For engineers reviewing the AT49BV161-70TI datasheet, AT49BV161-70TI pinout, AT49BV161-70TI application, or AT49BV161-70TI equivalent, key selection criteria include its 70 ns read access, dual-mode BYTE-selectable x8/x16 data interface, RDY/BUSY open-drain output, sector lockdown capability, and VPP-assisted accelerated program/erase - all critical for boot code integrity and field-upgradable firmware designs.
Technical Context
The AT49BV161-70TI implements a command-register-based Flash architecture with 39 independently erasable sectors (31 × 64 KB + 8 × 8 KB), supporting both chip- and sector-level erase via six-byte software commands. Its internal write state machine handles pulse generation, eliminating external timing control.
It features hardware and software data protection including VCC sense, noise filtering on WE/CE, VPP voltage validation (I/O3 status bit), and programmable configuration register (00/01) that determines post-program/erase return behavior - enabling either automatic read-mode recovery or explicit Product ID Exit requirement.
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 | 70 ns - guarantees deterministic read latency for real-time boot and interrupt vector fetch |
| Supply Voltage | 2.65V to 3.3V - single-supply operation compatible with 3.3V logic systems without level shifters |
| Program Time | 20 µs per word - enables rapid firmware patching during system maintenance windows |
| Sector Erase Time | 300 ms max per sector - allows selective firmware module updates without full chip erase |
| Standby Current | 10 µA - supports low-power retention in battery-backed or always-on embedded applications |
| Operating Temp | -40°C to +85°C - qualified for industrial temperature range operation |
Pinout & Package
AT49BV161-70TI is available in 48-lead TSOP Type I (JEDEC MO-142AA) and 45-ball/48-ball CBGA packages. The -70TI suffix denotes the 48-pin TSOP package with industrial temperature grade (-40°C to +85°C) and 70 ns access time.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 (I/O15 in byte mode) extends to 21 bits for x8 operation |
| I/O0–I/O15 | Data I/O (x16) / I/O0–I/O7 + A-1 (x8) | BYTE pin selects mode: high = x16 (I/O0–I/O15 active), low = x8 (I/O0–I/O7 active, I/O15 = LSB address) |
| CE, OE, WE | Chip Enable, Output Enable, Write Enable | Three-control-line interface prevents bus contention; standard microprocessor timing compatible |
| RDY/BUSY | Open-drain Ready/Busy Output | Actively pulled low during internal program/erase; supports OR-tying of multiple devices on shared status line |
| VPP | Write Protection & Acceleration Supply | Enables faster programming/erase at 5V or 12V; inhibits writes if <0.8V; must not float |
| RESET | Hardware Initialization Input | Halts ongoing operations and forces high-impedance outputs; required to exit suspend or error states |
| BYTE | Mode Selection Input | Determines x8 vs x16 data bus width - critical for compatibility with 8-bit or 16-bit host processors |
Key Features
| Feature | Design Value |
|---|---|
| Erase Suspend/Resume | Allows reading or programming one sector while erasing another - essential for real-time firmware updates without halting system execution |
| Sector Lockdown | Per-sector write-protection enabled via command; preserves boot code integrity while permitting runtime update of application partitions |
| 128-bit Protection Register | Factory-programmed 64-bit block + user-programmable/lockable 64-bit block - supports secure firmware signing and device authentication |
| Single Pulse Program Mode | Reduces programming overhead by replacing multi-cycle commands with single WE pulses after six-byte entry sequence |
| Hardware Data Protection | VCC sense, 10 ms power-on delay, noise filtering (<15 ns), and VPP validation prevent spurious writes during power transients or EMI events |
Applications
| Embedded Boot Memory | Firmware Update Module |
|---|---|
|
Use Scenario: Storing primary bootloader and initialization code in microcontroller-based industrial PLCs. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 70 ns read access for immediate instruction fetch upon reset. Use Value: Sector lockdown ensures boot code remains uncorrupted during field firmware upgrades to application partitions. |
Use Scenario: Field-upgradable firmware storage in network routers requiring hot-swappable feature modules. IC Role / Device Role / Timing Role: In-system reprogrammable Flash with suspend/resume for concurrent read/erase operations. Use Value: 300 ms sector erase time enables background update of one firmware image while executing from another. |
| BIOS Storage | Secure Configuration Storage |
|
Use Scenario: Motherboard BIOS storage in x86-based embedded computers with UEFI firmware. IC Role / Device Role / Timing Role: x16 interface aligned to 16-bit data bus; RDY/BUSY pin synchronizes flash operations with CPU wait states. Use Value: VPP acceleration at 5V reduces BIOS update time from minutes to seconds during manufacturing or service. |
Use Scenario: Tamper-resistant storage of cryptographic keys and calibration data in medical imaging equipment. IC Role / Device Role / Timing Role: 128-bit protection register with factory-block uniqueness and user-lockable block B. Use Value: Prevents unauthorized reprogramming of security-critical parameters while allowing field calibration updates. |
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 | 16 Mbit, 70 ns, 3.0V, 48-pin TSOP; lacks RDY/BUSY pin and sector suspend/resume | No hardware status signaling - requires polling-only end-of-operation detection | Choose when RDY/BUSY line is unavailable and polling-based timing is acceptable |
| MX29LV160ETTI-70G | 16 Mbit, 70 ns, 3.0V, 48-pin TSOP; includes RDY/BUSY but no BYTE pin - fixed x16 interface only | Incompatible with 8-bit host buses; no byte-mode flexibility | Choose for pure 16-bit systems where BYTE-selectable width is unnecessary |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV161-70TI uniquely combines RDY/BUSY signaling, BYTE-selectable bus width, and full erase/program suspend/resume - making it the only option among the three that supports real-time concurrent read/write/erase in mixed-bus-width embedded systems.
Availability
AT49BV161-70TI is available at Aetrix Electronics and suitable for embedded boot memory, firmware update modules, BIOS storage, and secure configuration storage requiring stable component supply across industrial lifecycle durations.
Supply support for AT49BV161-70TI 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 continues to manufacture and support legacy Atmel Flash products including the AT49BV/LV series.
The AT49BV161-70TI belongs to Microchip's parallel-interface Flash memory product line, designed specifically for cost-sensitive, high-reliability embedded systems requiring in-system programmability and robust data retention.
FAQ
What is the function of the BYTE pin on the AT49BV161-70TI?
The BYTE pin on the AT49BV161-70TI selects between x8 and x16 data bus modes. When driven high, the device operates in 16-bit mode with I/O0–I/O15 active. When driven low, it operates in 8-bit mode: I/O0–I/O7 carry data, I/O15 functions as the LSB address input (A-1), and I/O8–I/O14 are tri-stated. This dual-mode capability makes the AT49BV161-70TI compatible with both 8-bit and 16-bit microcontrollers without external glue logic.
Does the AT49BV161-70TI support hardware reset during programming?
Yes, the AT49BV161-70TI supports hardware reset via the RESET pin during programming, but doing so will corrupt the data at the location being programmed. The datasheet explicitly warns that a hardware reset during an embedded programming cycle invalidates the target byte/word. To safely abort programming, use the Product ID Exit command instead. The AT49BV161-70TI's RESET pin is intended for initialization and suspend-state recovery-not mid-program interruption.
How does the RDY/BUSY pin on the AT49BV161-70TI differ from the toggle bit or data polling methods?
The RDY/BUSY pin on the AT49BV161-70TI provides a dedicated, open-drain hardware signal that is actively pulled low during internal program or erase cycles and released (high-impedance) upon completion. Unlike data polling (I/O7 complement) or toggle bit (I/O6 oscillation), RDY/BUSY requires no address/data bus interaction, eliminates timing uncertainty from software polling loops, and supports wired-OR connection of multiple devices - simplifying system-level status monitoring in multi-flash architectures.
Can the AT49BV161-70TI be used with a 5V VPP supply while operating from a 3.3V VCC?
Yes, the AT49BV161-70TI supports 5V ±0.5V VPP while powered from 2.65V–3.3V VCC. When VPP exceeds VCC by more than 0.3V, the device automatically selects VPP as the programming/erase power source - accelerating those operations. However, VPP must never be left floating, and the 5V supply must be stable and well-decoupled. Using 5V VPP reduces typical sector erase time from 300 ms to ~100 ms and improves program reliability under marginal conditions.
What happens if a sector lockdown command is issued to an already locked sector on the AT49BV161-70TI?
If a Sector Lockdown command is issued to a sector already in lockdown on the AT49BV161-70TI, the command is accepted but has no effect - the sector remains locked and its contents unchanged. No error flag is set, and the device continues normal operation. Unlocking requires a power cycle or hardware reset, after which the sector may be erased and reprogrammed. This behavior ensures that accidental re-locking does not disrupt system operation or require diagnostic intervention.
AT49BV161-70TI 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:
- 70 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
AT49BV161-70TI FAQ
1.How can I place an order for AT49BV161-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV161-70TI 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 AT49BV161-70TI reliable?
The price and inventory of AT49BV161-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV161-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV161-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV161-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV161-70TI?
AT49BV161-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV161-70TI 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 AT49BV161-70TI?
For technical support, including AT49BV161-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV161-70TI requirements.
6.How does Aetrix verify that AT49BV161-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV161-70TI 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 AT49BV161-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV161-70TI?
All AT49BV161-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV161-70TI, 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 AT49BV161-70TI part is unused and in its original packaging.
Return procedure for AT49BV161-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV161-70TI 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…
