CY14B101J2-SXIT - 1Mb I2C nvSRAM, 3.4MHz SOIC-16 | Infineon
MPN： CY14B101J2-SXIT ✓ 啟用中CY14B101J2-SXIT 概覽
nvSRAM is a class of non-volatile RAM that combines the fast, unlimited read/write behavior of SRAM with the non-volatility of EEPROM or Flash. The device hierarchy places nvSRAM under non-volatile memory, which in turn sits under memory ICs and semiconductor devices. Unlike EEPROM, which requires slow erase/write cycles with limited endurance, nvSRAM stores data in a conventional SRAM cell and automatically transfers (STOREs) it to a non-volatile quantum-trap storage element on power failure, command, or brown-out, achieving effectively infinite SRAM read and write cycles.
Key features include 1-Mbit density organized as 128K words of 8 bits, a standard two-wire I2C serial interface operating up to 3.4 MHz, infinite read, write, and RECALL cycles, and automatic STORE on power loss with data retention specified for 20 years. These specifications make the device suitable for write-intensive data logging where EEPROM endurance would be a bottleneck.
Technically, the nvSRAM architecture pairs each SRAM cell with a non-volatile capture element; the part handles STORE and RECALL internally, including thermal management of the store operation, requiring an external reservoir capacitor (VCAP) to power the store during power failure. The I2C interface simplifies board routing to just two signal lines (SDA, SCL) plus power and ground.
Typical applications include industrial data loggers, metering equipment, network switches storing configuration tables, and point-of-sale or POS terminals requiring frequent writes to non-volatile memory. The -40C to +85C industrial temperature range supports harsh deployments.
Design consideration: always size and specify the VCAP reservoir capacitor per the manufacturer datasheet; an undersized capacitor risks data loss during STORE on power-down. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes beyond the raw datasheet.
直接替換替代品，適用於 CY14B101J2-SXIT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： CY14B101J2-SXIT （相同外形與佔位） — 差異在於 Interface, Organization, RoHS Status, Density, Memory Size.
CY14B101J2-SXI
✅ 直接替換聯絡詢價
查看資料表 →CY14E101J2-SXIT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
CY14B101J2-SXIT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →CY14B101J2-SXIT 最大額定值與電氣特性
| 記憶體類型 | nvSRAM (Non-Volatile SRAM) |
| 記憶體容量 | 1 Mbit (128K x 8) |
| 介面 | I2C (2-wire serial) |
| Max Clock Frequency | 3.4 MHz |
| 工作電源電壓 | 3.0 V (B series core range, 2.7V to 3.6V per datasheet) |
| 組織 | 128K words x 8 bits |
| SRAM Read/Write Cycles | Infinite (unlimited) |
| 工作溫度 | -40C to +85C |
| Package Type | SOIC-16, 0.300 inch (MO-119) |
| 安裝類型 | Surface Mount |
| Pins | 16 |
| RoHS 狀態 | Compliant (SOIC-16, RoHS compliant per digchip) |
| Packaging | Tape & Reel (T suffix) |
| Product Series | CY14B101J2 |
CY14B101J2-SXIT soic-16, 0.300 inch (mo-119) 腳位配置指南
CY14B101J2-SXIT（soic-16, 0.300 inch (mo-119) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： CY14B101J2-SXIT.
請參閱 資料表 以查看完整腳位配置。
典型應用
CY14B101J2-SXIT 適用於 6 應用s: Industrial Data Logging, Utility Metering, Network Switch Configuration Storage, Point-of-Sale Terminals, Medical Device Calibration Storage, Automotive-Adjacent Telematics (Non-Safety).
Industrial Data Logging
The CY14B101J2-SXIT fits industrial data loggers because its unlimited SRAM write cycles eliminate the endurance ceiling that constrains EEPROM/Flash-based loggers, while the 1-Mbit (128K x 8) capacity holds hundreds of thousands of event records. The -40C to +85C industrial temperature range supports unheated cabinets and factory-floor deployments. The I2C interface up to 3.4 MHz keeps firmware overhead minimal on small MCUs. The automatic STORE on power failure is the decisive feature: when plant power drops unexpectedly, SRAM contents are transferred to non-volatile storage without software intervention, so no log entries are lost. The trade-off is the mandatory VCAP reservoir capacitor, which must be sized per the datasheet.
推薦
Utility Metering
Electricity, gas, and water meters demand non-volatile storage that survives decades of continuous, frequent write activity: tariff tables, load profiles, and tamper event records. The CY14B101J2-SXIT addresses this with infinite SRAM read and write cycles plus 1-Mbit capacity for extended load-profile history, operating across -40C to +85C as required for outdoor meter enclosures. Its 3.0V operation suits battery-backed or mains-derived 3.3V supplies common in meter electronics. The automatic STORE function captures meter state instantly on brown-out, protecting billing-critical data. Designers should budget the store-current transient on the supply rail and correctly specify the VCAP capacitor to guarantee non-volatile capture at the lowest expected supply voltage.
推薦
Network Switch Configuration Storage
Enterprise and industrial network switches store configuration, MAC address tables, and statistics in non-volatile memory that must endure frequent rewrites during reconfiguration. The CY14B101J2-SXIT provides 1 Mbit of I2C-attached nvSRAM with unlimited write cycles, so configuration stores can occur as often as needed without wear concerns that plague Flash. The two-wire I2C bus at up to 3.4 MHz minimizes pin usage on already-crowded control planes. Automatic STORE on power failure preserves the running configuration during unexpected power loss, and RECALL restores it on next boot, accelerating failover. The 3.0V supply integrates directly with standard 3.3V switch fabric logic rails.
推薦
Point-of-Sale Terminals
POS terminals require transaction journals and application state to persist through power interruption while being written at every transaction. The CY14B101J2-SXIT's nvSRAM architecture handles this perfectly: SRAM-speed writes with no page or sector erase, unlimited endurance, and hardware-automated non-volatile STORE on power loss. Its 1-Mbit (128K x 8) density stores thousands of transaction records, and the -40C to +85C range covers unattended kiosks and outdoor terminals. The I2C serial interface up to 3.4 MHz connects to the main application MCU with just two signal wires, simplifying PCB routing in compact handheld enclosures. Designers must implement power-fail detection early enough to allow the internal STORE to complete.
推薦
Medical Device Calibration Storage
Portable and benchtop medical instruments store calibration coefficients, usage counters, and audit trails that must survive power cycles for regulatory compliance. The CY14B101J2-SXIT offers unlimited write endurance for frequent recalibration events, 1-Mbit capacity for long audit logs, and automatic STORE ensuring calibration data is never corrupted by unexpected shutdown. Its 3.0V operation and low I2C-bus overhead suit battery-powered designs. The SOIC-16 surface-mount package withstands reflow assembly and automated optical inspection used in medical-grade manufacturing. Design teams should validate the -40C to +85C operating envelope against the instrument's specified storage and transport conditions and follow the datasheet's VCAP layout recommendations for noise immunity.
推薦
Automotive-Adjacent Telematics (Non-Safety)
Telematics and fleet-tracking units log GPS event data, driver identification records, and trip statistics that must persist through vehicle power cycling. The CY14B101J2-SXIT's unlimited write endurance accommodates continuous high-frequency logging where Flash wear-leveling would be burdensome, and the 1-Mbit (128K x 8) capacity holds extended trip histories between uplink sessions. The industrial -40C to +85C range covers most in-cab and under-dash environments, and automatic STORE on power removal preserves data during battery disconnect. Note this part is not AEC-Q100 qualified; for safety-relevant or fully automotive-grade designs, verify qualification requirements with Infineon or select an automotive-qualified memory alternative.
推薦
工程參考資料，適用於 CY14B101J2-SXIT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | CY14B101J2-SXI | CY14E101J2-SXIT |
|---|---|---|---|
| Package | SOIC-16 (0.300 inch, MO-119) | SOIC-16 - same | SOIC-16 - same |
| Brand | Infineon Technologies (Cypress) | Infineon Technologies | Infineon Technologies |
| Memory Size | 1 Mbit (128K x 8) | 1 Mbit (128K x 8) | 1 Mbit (128K x 8) |
| Interface | I2C, 3.4 MHz | I2C, 3.4 MHz | I2C |
| Supply Voltage Class | 3.0 V (2.7V-3.6V class) | 3.0 V - same | 5 V class - differs |
| SRAM Endurance | Infinite read/write/RECALL | Infinite read/write/RECALL | Infinite read/write/RECALL |
| Delivery Format | Tape & Reel (T suffix) | Tube / tray (no T suffix) | Tape & Reel (T suffix) |
主要差異化特點
- Standard 3.0V supply class for modern logic rails (對比CY14E101J2-SXIT)
- Unlimited write endurance vs EEPROM (對比Conventional serial EEPROM (e.g., 24C1024 class))
- Tape-and-reel delivery for automated assembly (對比CY14B101J2-SXI)
設計說明
Estimated: the VCAP reservoir capacitor is the single most safety-critical external component on this nvSRAM. During an automatic STORE triggered by power failure, the capacitor alone supplies the store current. Use the capacitance and voltage rating specified in the Infineon/Cypress CY14B101 datasheet for 1-Mbit density, choose a low-ESR ceramic or tantalum capacitor, and never load the VCAP node with other circuitry. An undersized or high-ESR capacitor can cause incomplete stores and silent data corruption on power-down.
Place a 0.1uF ceramic decoupling capacitor within 2-3 mm of the VCC pin, and route the I2C SDA/SCL traces short with pull-up resistors sized for the bus capacitance (typically 2.2k to 4.7k ohm at 3.3 V for a lightly loaded bus at 3.4 MHz). Keep the VCAP capacitor physically adjacent to its pin with a short, wide return path to ground. Avoid routing switching-regulator nodes near the VCAP node to prevent noise coupling during the sensitive store operation.
Two common integration mistakes: (1) treating the part like EEPROM and adding software-level wear management or slow write routines that the hardware does not need - writes are SRAM-speed and unlimited; (2) omitting proper power-fail detection, assuming automatic STORE covers all cases - the brown-out detection is internal but supply slew-rate conditions in the datasheet must be met. Also verify firmware implements the RECALL behavior correctly after power-up, since SRAM contents are restored from non-volatile storage asynchronously.
合規資訊
RoHS compliant per digchip specification listing (SOIC-16, 0.300 inch, MO-119, RoHS compliant). REACH, halogen-free, and conflict-minerals status not stated in verified web data. Not an AEC-Q100 automotive part.
