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Microchip Technology AT28BV16-30TI
- Part No.:
- AT28BV16-30TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 28-TSSOP (0.465", 11.80mm Width)
- Datasheet:
-
AT28BV16-30TI.pdf
- Description:
- IC EEPROM 16KBIT PARALLEL 28TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,581
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Product details
Overview
AT28BV16-30TI from Atmel is a 16 Kbit (2,048 × 8) parallel EEPROM with JEDEC-standard byte-wide pinout, 300 ns read access time, 2.7–3.6 V supply operation, and industrial temperature range (−40°C to +85°C). It supports direct microprocessor control via CE/OE/WE logic, DATA polling, and RDY/BUSY output in TSOP package for embedded nonvolatile data storage.
For engineers reviewing the AT28BV16-30TI datasheet, AT28BV16-30TI pinout, AT28BV16-30TI application, or AT28BV16-30TI equivalent, key selection considerations include its 300 ns read timing, 3 ms byte-write cycle, CMOS standby current of 50 µA, and compatibility with 8-bit bus interfaces in space-constrained industrial control and instrumentation designs.
Technical Context
The AT28BV16-30TI operates as a parallel-access EEPROM with static RAM-like read/write interface-no external timing circuitry required. Its internal self-timed write cycle clears and programs each byte autonomously after address/data latching, with completion signaled by DATA polling on I/O7 or RDY/BUSY open-drain output (TSOP only).
Write protection is implemented via VCC sense (<2.0 V inhibits writes), 5 ms power-on delay, and triple logic-level inhibition (OE low, CE high, or WE high). An additional 32-byte user-accessible ID sector is available at addresses 7E0H–7FFH using A9 = 12 ± 0.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 words × 8 bits) - supports full byte-addressable nonvolatile storage without external address decoding. |
| Read Access Time | 300 ns max - enables direct interfacing with 3.3 V microcontrollers running at ≤3 MHz system bus speeds. |
| Byte Write Cycle | 3.0 ms typical - defines minimum interval between successive byte writes; no external erase command needed. |
| VCC Supply Range | 2.7 V to 3.6 V - compatible with single-supply 3.3 V systems and tolerant of brown-out conditions down to 2.0 V. |
| Standby Current | 50 µA max - reduces power budget in always-on industrial monitoring nodes during idle periods. |
| Data Retention | 10 years at +85°C - ensures long-term reliability in unattended field-deployed equipment. |
| Endurance | 100,000 write/erase cycles - supports frequent calibration or configuration updates in programmable logic controllers. |
Pinout & Package
AT28BV16-30TI is supplied in a 28-lead Plastic Thin Small Outline Package (TSOP), JEDEC MO-153AA compliant, with 0.55 mm lead pitch and 8.10 mm × 13.7 mm body dimensions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address Inputs | 11-bit address bus supporting full 2K-word addressing; A10 used for high-word selection in 2K × 8 organization. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel data path; supports true read/write without direction control pins; I/O7 used for DATA polling during write completion detection. |
| CE | Chip Enable | Active-low chip select; must be low for read or write access; enables bus sharing in multi-device systems. |
| OE | Output Enable | Active-low output control; allows high-impedance tri-state outputs when deasserted, preventing bus contention. |
| WE | Write Enable | Active-low write strobe; initiates byte write on falling edge; latches address and data for internal self-timed programming. |
| RDY/BUSY | Open-Drain Status Output | Low during internal write cycle; released (high-Z) upon completion; requires external pull-up for logic-level interpretation. |
| VCC, GND | Power Supply | Single 2.7–3.6 V supply; decoupling capacitor recommended near VCC pin to suppress switching noise during write transitions. |
| NC, DC | No Connect / Don't Connect | Unbonded or unused pins; must remain unconnected per design; not to be tied to VCC, GND, or signals. |
Key Features
| Feature | Design Value |
|---|---|
| DATA Polling on I/O7 | Enables software-driven write completion detection without dedicated status lines or timers, reducing firmware overhead in resource-limited MCUs. |
| RDY/BUSY Output (TSOP) | Hardware-ready signal simplifies real-time system scheduling by eliminating polling loops and freeing CPU cycles during 3 ms write operations. |
| VCC Sense Write Inhibit | Prevents inadvertent writes during power ramp-up or brown-out, ensuring data integrity in unstable supply environments like battery-backed systems. |
| User-Accessible 32-Byte ID Sector | Allows unique device serialization or calibration data storage at 7E0H–7FFH using elevated A9 voltage, extending usability beyond main memory array. |
| JEDEC Byte-Wide Pinout | Ensures drop-in compatibility with legacy 27C256/27C512 socket layouts and existing PCB footprints, minimizing redesign effort. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing runtime-configurable I/O mapping and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via 8-bit parallel bus during boot and reconfiguration events. Use Value: 10-year data retention and 100,000-cycle endurance ensure reliable parameter persistence across decades of maintenance-free operation in harsh EMI environments. |
Use Scenario: Holding sensor-specific gain/offset coefficients and regulatory compliance timestamps in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, tamper-resistant calibration memory mapped directly to MCU address space with hardware write protection. Use Value: VCC-sense and 5 ms power-on delay prevent corruption during battery swaps or cold starts, meeting IEC 62304 Class B software safety requirements. |
| Telecom Line Card Boot Parameters | Automotive Body Control Module Settings |
Use Scenario: Storing firmware version identifiers, port enable masks, and fault-log counters in carrier-grade DSLAM line cards operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Parallel EEPROM acting as persistent parameter store accessible during FPGA initialization and hot-swap events. Use Value: Industrial −40°C to +85°C rating and 300 ns read timing support deterministic boot sequencing under thermal stress without timing margin loss. |
Use Scenario: Retaining user preferences (window position, mirror angle) and adaptive learning values in vehicle body control units exposed to automotive thermal cycling. IC Role / Device Role / Timing Role: Low-power nonvolatile memory interfaced to 8-bit automotive MCU via standard address/data bus with minimal glue logic. Use Value: 50 µA standby current extends battery life during vehicle sleep mode while maintaining data integrity over 15+ year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C16 | 5 V-only operation (4.5–5.5 V); 250 ns access; no VCC sense or RDY/BUSY output. | Limited to legacy 5 V systems; lacks industrial low-voltage robustness and hardware status signaling. | Choose only if existing 5 V infrastructure prohibits 3.3 V adoption and write timing tolerance >3 ms exists. |
| M95160-DW | Serial SPI interface; 16 Kbit; 5 ms write cycle; 2.5–5.5 V supply; no parallel bus or RDY/BUSY. | Requires SPI controller and firmware driver; incompatible with address/data bus architectures. | Select when board space is constrained and serial interface is already used elsewhere in the BOM. |
Compared with AT28C16 and M95160-DW, the AT28BV16-30TI uniquely combines 3.3 V parallel interface, hardware RDY/BUSY signaling, and industrial-grade VCC-sense protection-making it the only option for retrofitting 3.3 V microcontroller systems requiring zero-software-overhead write completion detection and guaranteed data integrity during power transients.
Availability
AT28BV16-30TI is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, telecom line cards, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for AT28BV16-30TI 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 secure authentication ICs for industrial, automotive, and communications markets.
The AT28BV16 product line delivers low-voltage, high-reliability parallel EEPROMs optimized for embedded systems needing deterministic, bus-compatible nonvolatile storage without external timing components or complex firmware drivers.
FAQ
What is the maximum operating temperature range for the AT28BV16-30TI?
The AT28BV16-30TI is rated for industrial temperature operation from −40°C to +85°C. This specification is validated per the manufacturer's AC and DC operating range tables and applies to all electrical parameters including 300 ns read access time and 3 ms byte write cycle. The AT28BV16-30TI maintains full functionality within this range without derating.
Does the AT28BV16-30TI support true parallel read/write like SRAM?
Yes, the AT28BV16-30TI supports SRAM-like read access with CE and OE low and WE high, and byte write initiation with CE or WE low and OE high. Unlike flash, it requires no external erase commands or page programming-each byte write is self-contained and automatically timed. The AT28BV16-30TI does not require wait states for reads but enforces a 3 ms internal write cycle.
How is write completion detected on the AT28BV16-30TI?
Write completion on the AT28BV16-30TI can be detected via two methods: (1) DATA polling on I/O7-reading the target location returns complemented data until completion, then true data; (2) RDY/BUSY pin (TSOP package only)-an open-drain output pulled low during write and released at completion. Both methods are fully supported in the AT28BV16-30TI and documented in its device operation section.
Is the AT28BV16-30TI pin-compatible with older 27-series EPROMs?
No, the AT28BV16-30TI is not pin-compatible with 27-series EPROMs such as 27C256. While it uses JEDEC-standard byte-wide pinout (matching 27C256 address/data layout), it substitutes RDY/BUSY for the 27C256's PGM input and omits the VPP pin. The AT28BV16-30TI also lacks UV-erasable window and requires no programming voltage-making it electrically and functionally distinct despite footprint similarity.
What packaging options are available for the AT28BV16-30TI?
The AT28BV16-30TI is specifically offered in the 28-lead Plastic Thin Small Outline Package (TSOP), identified by package code "T" in the ordering code. Other variants like AT28BV16-30JI use PLCC (J), AT28BV16-30PI use PDIP (P), and AT28BV16-30SI use SOIC (S), but the "TI" suffix denotes TSOP + industrial temperature-so only the 28T package applies to the AT28BV16-30TI.
AT28BV16-30TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 28-TSSOP (0.465", 11.80mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- 300 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSOP
AT28BV16-30TI FAQ
1.How can I place an order for AT28BV16-30TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28BV16-30TI 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 AT28BV16-30TI reliable?
The price and inventory of AT28BV16-30TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28BV16-30TI is usually 5 days.
3.What payment methods are accepted for AT28BV16-30TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28BV16-30TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28BV16-30TI?
AT28BV16-30TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28BV16-30TI 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 AT28BV16-30TI?
For technical support, including AT28BV16-30TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28BV16-30TI requirements.
6.How does Aetrix verify that AT28BV16-30TI is sourced from the original manufacturer or authorized distributors?
All AT28BV16-30TI 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 AT28BV16-30TI meets industry standards.
7.What is the process for return or replacement of AT28BV16-30TI?
All AT28BV16-30TI units undergo pre-shipment inspection (PSI). If there is an issue with AT28BV16-30TI, 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 AT28BV16-30TI part is unused and in its original packaging.
Return procedure for AT28BV16-30TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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