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Microchip Technology AT28BV16-30TC
- Part No.:
- AT28BV16-30TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 28-TSSOP (0.465", 11.80mm Width)
- Datasheet:
-
AT28BV16-30TC.pdf
- Description:
- IC EEPROM 16KBIT PARALLEL 28TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,259
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Product details
Overview
AT28BV16-30TC from Atmel is a 16 Kbit (2,048 × 8) parallel EEPROM with JEDEC-standard byte-wide pinout, 2.7–3.6 V supply operation, 300 ns read access time, and CMOS-compatible I/O. It supports direct microprocessor control via DATA polling and RDY/BUSY output (TSOP package), and is rated for 100,000 write cycles and 10-year data retention in commercial temperature range (0°C to 70°C).
For engineers reviewing the AT28BV16-30TC datasheet, AT28BV16-30TC pinout, AT28BV16-30TC application, or AT28BV16-30TC equivalent, key selection considerations include its 28-pin TSOP package, 300 ns read timing, low-power standby current (50 µA), and compatibility with legacy 8-bit bus systems requiring nonvolatile storage without external timing circuitry.
Technical Context
The AT28BV16-30TC operates as a drop-in parallel memory replacement for SRAM-based boot code or configuration storage, using standard CE/OE/WE control logic and delivering true static RAM-like read/write interface behavior. Its internal self-timed write cycle eliminates need for external wait-state generation.
It implements VCC-sense write protection, automatic 5 ms power-on delay, and DATA polling on I/O7 to detect write completion - all critical for reliable embedded firmware updates. The RDY/BUSY open-drain output (TSOP only) provides hardware-ready signaling during internal write operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 words × 8 bits); sufficient for small boot loaders, calibration tables, or device ID storage. |
| Read Access Time | 300 ns max; compatible with 3.3 V microcontrollers running at ≤3 MHz bus clock without wait states. |
| Write Cycle Time | 3.0 ms typical; enables predictable firmware update latency without CPU polling overhead beyond DATA polling. |
| VCC Supply Range | 2.7 V to 3.6 V; matches modern low-voltage 3.3 V logic rails and battery-backed systems. |
| Standby Current | 50 µA max; supports ultra-low-power sleep modes in portable or energy-harvesting applications. |
| Endurance | 100,000 write/erase cycles; suitable for field-updatable parameters with moderate revision frequency. |
| Data Retention | 10 years at 85°C; ensures long-term reliability in industrial environments without refresh. |
Pinout & Package
AT28BV16-30TC is supplied in a 28-lead Plastic Thin Small Outline Package (TSOP), JEDEC MS-016AE compliant, with 0.55 mm lead pitch and body dimensions 11.8 × 7.9 mm. Pin 1 marked by notch or index area; leads are gull-wing, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address Inputs | 11-bit address bus for 2K-word addressing; latched internally during write for bus release. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel data path; supports DATA polling on I/O7 to detect write completion. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read access. |
| OE | Output Enable | Active-low output control; used with CE to prevent bus contention during multi-device sharing. |
| WE | Write Enable | Active-low write strobe; initiates byte write when CE low and OE high. |
| RDY/BUSY | Open-Drain Status Output | Pulled low during internal write; released high when complete - requires external pull-up resistor. |
| VCC, GND | Power Supply | Single 2.7–3.6 V supply; no separate VPP or programming voltage required. |
| NC, DC | No Connect / Don't Connect | Unbonded or unused pins; must remain unconnected per datasheet guidance. |
Key Features
| Feature | Design Value |
|---|---|
| DATA Polling on I/O7 | Enables software-driven write completion detection without dedicated status lines or timers. |
| RDY/BUSY Open-Drain Output | Provides hardware-ready signal for synchronous write coordination in real-time systems. |
| VCC-Sense Write Inhibit | Prevents corruption during brown-out or power ramp-up by disabling writes below ~2.0 V. |
| Internal Self-Timed Write | Eliminates need for external write pulse timing control or wait-state generators. |
| 32-Byte Device ID Area | Accessible via A9 = 12 V; allows unique serialization or factory calibration data storage. |
Applications
| Industrial PLC Configuration Storage | Legacy Embedded Bootloader Memory |
|---|---|
Use Scenario: Storing user-configurable I/O mapping and alarm thresholds in programmable logic controllers operating across -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Nonvolatile parallel memory holding runtime configuration data accessed at system startup and during reconfiguration. Use Value: 100,000-cycle endurance and 10-year data retention ensure field reliability without periodic backup or refresh. | Use Scenario: Holding boot code for 8-bit microcontrollers (e.g., 8051 derivatives) in medical diagnostic instruments with strict qualification requirements. IC Role / Device Role / Timing Role: Primary boot ROM replacement with SRAM-like interface, eliminating need for external address latches or glue logic. Use Value: 300 ns read access and JEDEC-standard pinout enable drop-in replacement of obsolete EPROMs or SRAM+backup solutions. |
| Point-of-Sale Terminal Parameter Storage | Automotive Body Control Module Calibration |
Use Scenario: Saving tax rate tables, receipt formatting rules, and operator IDs in retail terminals powered from 3.3 V rails with intermittent battery backup. IC Role / Device Role / Timing Role: Low-voltage nonvolatile memory supporting frequent parameter updates during daily maintenance windows. Use Value: 50 µA standby current extends battery life during overnight shutdown; VCC-sense prevents write corruption during power transitions. | Use Scenario: Storing vehicle-specific calibration constants (e.g., window lift profiles, mirror position offsets) in BCMs exposed to automotive thermal cycling. IC Role / Device Role / Timing Role: Field-programmable configuration memory accessed during ignition-on initialization sequences. Use Value: Industrial temperature grade (-40°C to +85°C) and 10-year retention meet OEM longevity requirements without EEPROM wear-leveling firmware. |
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 supply (4.5–5.5 V); 250 ns access; no RDY/BUSY pin; same 2K×8 organization. | Requires 5 V rail; lacks hardware busy signaling; suited for legacy 5 V systems only. | Select AT28C16 only if system uses 5 V logic and does not require RDY/BUSY or low-voltage operation. |
| ST M28W160ECB | 3 V supply (2.7–3.6 V); 16 Mbit density; 70 ns access; different pinout and command protocol. | Not pin-compatible; requires firmware rewrite for command-set and address decoding; higher density but more complex interface. | Choose M28W160ECB only when migrating to larger capacity and accepting redesign effort for faster, flash-based architecture. |
Compared with AT28C16 and ST M28W160ECB, the AT28BV16-30TC uniquely balances 3.3 V compatibility, JEDEC-standard pinout, hardware RDY/BUSY signaling, and minimal firmware integration effort - making it optimal for cost-sensitive, low-power 8-bit upgrades where layout reuse and timing predictability are critical.
Availability
AT28BV16-30TC is available at Aetrix Electronics and suitable for industrial PLCs, legacy embedded bootloaders, point-of-sale terminals, and automotive body control modules requiring stable component supply and long-lifecycle support.
Supply support for AT28BV16-30TC 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 semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT28BV16 product line delivers low-voltage, parallel-interface EEPROMs designed for seamless integration into 8-bit microprocessor systems needing reliable, pin-compatible nonvolatile storage without external programming voltage or timing circuitry.
FAQ
What is the maximum operating temperature range for the AT28BV16-30TC?
The AT28BV16-30TC is specified for commercial temperature operation from 0°C to +70°C. This rating is confirmed in the Ordering Information table on page 8 of the datasheet, where "TC" suffix denotes the commercial-grade TSOP package variant. Industrial-grade variants (e.g., AT28BV16-30TI) support -40°C to +85°C, but the AT28BV16-30TC itself is limited to the commercial range.
Does the AT28BV16-30TC require an external VPP programming voltage?
No, the AT28BV16-30TC does not require an external VPP voltage. It performs all write operations using only the standard 2.7–3.6 V VCC supply. Internal charge pumps generate necessary high-voltage programming signals, enabling single-supply operation - a key feature highlighted in the "Features" section and confirmed in the "Device Operation" description on page 3.
How is write completion detected on the AT28BV16-30TC?
Write completion on the AT28BV16-30TC can be detected via two methods: (1) DATA polling on I/O7 - reading the target address returns complemented data until write finishes, then true data; (2) RDY/BUSY pin (TSOP only) - open-drain output pulled low during internal write and released high upon completion. Both mechanisms are documented in Sections 3 and 4 of the datasheet.
Is the AT28BV16-30TC pin-compatible with the AT28BV16-25TC?
Yes, the AT28BV16-30TC is pin-compatible with the AT28BV16-25TC. Both share identical 28-pin TSOP packaging, JEDEC-standard byte-wide pinout, and identical pin functions (A0–A10, I/O0–I/O7, CE, OE, WE, RDY/BUSY, VCC, GND, NC). The only difference is read access time: 300 ns vs. 250 ns. This is explicitly confirmed in the "Valid Part Numbers" table on page 8, which lists both under the same package type "28T".
What is the purpose of the 32-byte device identification area in the AT28BV16-30TC?
The 32-byte device identification area (addresses 7E0H–7FFH) in the AT28BV16-30TC is user-accessible EEPROM space for storing unique identifiers, calibration data, or manufacturing traceability codes. Access requires raising A9 to 12 ± 0.5 V - a method documented in the "Device Identification" section on page 3. This area operates independently of main array timing and retains data for 10 years like the primary memory.
AT28BV16-30TC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSOP
AT28BV16-30TC FAQ
1.How can I place an order for AT28BV16-30TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28BV16-30TC 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 AT28BV16-30TC reliable?
The price and inventory of AT28BV16-30TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28BV16-30TC is usually 5 days.
3.What payment methods are accepted for AT28BV16-30TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28BV16-30TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28BV16-30TC?
AT28BV16-30TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28BV16-30TC 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 AT28BV16-30TC?
For technical support, including AT28BV16-30TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28BV16-30TC requirements.
6.How does Aetrix verify that AT28BV16-30TC is sourced from the original manufacturer or authorized distributors?
All AT28BV16-30TC 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 AT28BV16-30TC meets industry standards.
7.What is the process for return or replacement of AT28BV16-30TC?
All AT28BV16-30TC units undergo pre-shipment inspection (PSI). If there is an issue with AT28BV16-30TC, 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 AT28BV16-30TC part is unused and in its original packaging.
Return procedure for AT28BV16-30TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT28BV16-30TC Tags
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