Microchip Technology SST26VF016BAT-104I/SN

Overview

SST26VF016BAT-104I/SN from Microchip Technology is a 16 Mbit Serial Quad I/O™ (SQI™) flash memory IC operating at 2.3–3.6 V, supporting 104 MHz SPI and 80 MHz SQI read speeds, with uniform 4 KByte sectors, 100,000 program/erase cycles, and industrial temperature range (–40°C to +85°C). It serves as nonvolatile code/data storage in microcontroller boot loaders and firmware update modules.

For engineers reviewing the SST26VF016BAT-104I/SN datasheet, SST26VF016BAT-104I/SN pinout, SST26VF016BAT-104I/SN application, or SST26VF016BAT-104I/SN equivalent, key selection criteria include quad-I/O burst performance, flexible block protection granularity, hardware write-protection via WP# pin, and compatibility with both legacy SPI and high-speed SQI host interfaces.

Technical Context

The SST26VF016BAT-104I/SN implements a six-wire SQI interface (SCK, CE#, VDD, VSS, SIO[3:0]) enabling 4-bit multiplexed data transfer, achieving up to 4× throughput versus standard SPI at identical clock frequency. Its SuperFlash® split-gate cell architecture delivers 18 ms sector erase (typ) and 256-byte page programming.

It supports dual operational modes: default SPI mode (x1/x2/x4) after power-on reset, and configurable SQI mode activated via EQIO command. Mode 0 and Mode 3 clock polarity support ensures interoperability with diverse host controllers, while HOLD# and WP# pins provide hardware-level control for suspend and write-lock functions in SPI mode only.

Key Specifications

Pinout & Package

Package: 8-contact WDFN (6 mm × 5 mm), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial flash memory applications.

Compared with W25Q16JVSIQ and S25FL116K0XMFI011, the SST26VF016BAT-104I/SN provides unique SQI protocol acceleration, integrated Security ID with factory-unique ID, and non-volatile write-lock down-making it optimal for secure, high-throughput embedded boot and update architectures where those features are leveraged.

Availability

SST26VF016BAT-104I/SN is available at Aetrix Electronics and suitable for industrial control HMI panels, automotive telematics modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for SST26VF016BAT-104I/SN 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 Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory solutions, with global design, manufacturing, and support infrastructure.

The SST26VF016BAT-104I/SN belongs to Microchip's Serial Quad I/O™ (SQI™) flash memory product line, engineered for high-speed, low-pin-count nonvolatile storage in resource-constrained embedded systems demanding secure, reliable firmware execution and field updates.

FAQ

What is the maximum clock frequency supported by the SST26VF016BAT-104I/SN in SQI mode?

The SST26VF016BAT-104I/SN supports up to 80 MHz in SQI mode when operated across the full 2.3–3.6 V supply range. At 2.7–3.6 V, its maximum SPI clock frequency is 104 MHz-but SQI mode is limited to 80 MHz per the DS20005262C datasheet. This reflects the timing margin required for reliable 4-bit multiplexed I/O operation under lower voltage conditions. The SST26VF016BAT-104I/SN achieves peak read bandwidth of 320 Mbps in SQI mode at 80 MHz.

Does the SST26VF016BAT-104I/SN support hardware write protection via the WP# pin?

Yes, the SST26VF016BAT-104I/SN supports hardware write protection using the WP# pin (mapped to SIO2), but only when the IOC bit is '0' and the WPEN bit is '1' in the Configuration register. In this configuration, pulling WP# low disables writes to the Block-Protection and Configuration registers. The SST26VF016BAT-104I/SN defaults to WPEN = 0 at power-up, so WP# functionality must be explicitly enabled via WRSR command before use.

Can the SST26VF016BAT-104I/SN be used as a drop-in replacement for standard SPI flash devices?

The SST26VF016BAT-104I/SN is pin-compatible and command-set compatible with standard SPI flash in x1 mode, supporting all common SPI instructions (e.g., 03H Read, 02H Page Program, 20H Sector Erase). However, it is not a drop-in replacement for devices requiring QPI or octal interfaces, nor does it support legacy dual-output-only protocols without reconfiguration. Its SST26VF016BAT-104I/SN SQI functionality requires explicit EQIO command activation and IOC bit setting.

What is the purpose of the Security ID feature in the SST26VF016BAT-104I/SN?

The SST26VF016BAT-104I/SN includes a 2 KByte Security ID (Sec ID) space comprising a factory-programmed 64-bit unique identifier and a user-programmable segment. This enables device authentication, firmware binding, and secure key storage. Once locked via the LSID command, the entire Sec ID space becomes read-only; the SST26VF016BAT-104I/SN SEC bit in the Status register then permanently indicates '1', confirming irreversible lock status.

How does the write-suspend feature work in the SST26VF016BAT-104I/SN?

The SST26VF016BAT-104I/SN supports write-suspend via the WRSU command, allowing an active Program or Erase operation to be paused-enabling immediate access to other memory regions for high-priority reads. Suspension is confirmed by WSP or WSE bits in the Status register. Resume is triggered by WRRE command. This capability ensures deterministic response latency in real-time systems, and the SST26VF016BAT-104I/SN maintains full data integrity across suspend/resume cycles.