My Inquiry
My Account
Infineon Technologies CY14B101KA-ZS25XIT
- Part No.:
- CY14B101KA-ZS25XIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY14B101KA-ZS25XIT.pdf
- Description:
- IC NVSRAM 1MBIT PAR 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,444
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY14B101KA-ZS25XIT from Cypress Semiconductor is a 1-Mbit (128K × 8) nonvolatile SRAM with integrated real-time clock, delivering 25 ns access time, infinite SRAM read/write cycles, and autonomous AutoStore on power loss using a single external capacitor. It operates at 3.0 V ±10% over industrial temperature and supports software/hardware STORE/RECALL, RTC alarm, and watchdog timer in a 44-pin TSOP II package for embedded data logging and time-stamped control systems.
For engineers reviewing the CY14B101KA-ZS25XIT datasheet, CY14B101KA-ZS25XIT pinout, CY14B101KA-ZS25XIT application, or CY14B101KA-ZS25XIT equivalent, key selection criteria include nvSRAM retention reliability (20-year data hold), RTC backup current (0.35 µA typical), ×8 vs ×16 configuration mapping, and VCAP-based AutoStore timing compliance under brown-out conditions.
Technical Context
The device integrates SRAM and QuantumTrap nonvolatile elements in a monolithic die, enabling parallel STORE/RECALL across all 131,072 bytes without byte-by-byte sequencing. Its RTC subsystem includes leap-year tracking, programmable alarm intervals (minutes to months), and a watchdog timer with interrupt output via INT pin.
Power management is split: VCC supplies active operation; VCAP provides energy for AutoStore during VCC collapse; VRTCcap or VRTCbat independently powers RTC during main supply loss. HSB serves dual role - input trigger for hardware STORE and open-drain status indicator of STORE/RECALL busy state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1-Mbit (128K × 8), fully addressable via A0–A16 with DQ0–DQ7 I/O |
| Access Time | 25 ns max - enables direct interface with 40 MHz microcontrollers without wait states |
| STORE Endurance | 1 million cycles to QuantumTrap - defines maximum guaranteed power-loss events before wear-out |
| Data Retention | 20 years at +85°C - ensures long-term data integrity in unpowered storage |
| RTC Backup Current | 0.35 µA typical at +25°C - allows >10-year coin-cell battery life in backup mode |
| Operating Voltage | 3.0 V +20%, –10% - compatible with standard 3.3 V rail with ±10% tolerance margin |
| Temperature Range | –40°C to +85°C - qualified for industrial control, metering, and automotive body electronics |
Pinout & Package
Package: 44-pin Thin Small Outline Package (TSOP II), Type II, RoHS-compliant, 0.8 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Input | 17-bit address bus for 128K × 8 configuration; A16 used only in ×8 mode |
| DQ0–DQ7 | Bidirectional Data I/O | 8-bit parallel data path; tristated when OE HIGH or during STORE/RECALL |
| WE, CE, OE | Control Inputs | Active-low write, chip enable, and output enable - standard SRAM timing interface |
| HSB | I/O (dual-function) | Input: triggers hardware STORE when pulled LOW; Output: open-drain busy flag during STORE/RECALL |
| VCC, VSS | Power/Ground | Main 3.0 V supply and ground reference; decoupling required per AC switching specs |
| VCAP | AutoStore Capacitor Supply | Connects to external 4.7 µF tantalum capacitor; powers STORE operation during VCC dropout |
| VRTCcap / VRTCbat | RTC Backup Supply | Select one: capacitor-backed (VRTCcap) or battery-backed (VRTCbat); not both |
| INT | Interrupt Output | Programmable active-HIGH push-pull or active-LOW open-drain; asserts on RTC alarm/watchdog/power monitor |
| Xin / Xout | Crystal Interface | Drives 32.768 kHz tuning-fork crystal; internal oscillator enables RTC without external clock source |
Key Features
| Feature | Design Value |
|---|---|
| Hands-off AutoStore | Automatic STORE triggered by VCC drop below VSWITCH, powered solely by VCAP capacitor - no firmware or host intervention required |
| QuantumTrap Nonvolatility | Embedded nonvolatile cell architecture enabling infinite RECALL and 1M STORE cycles - eliminates EEPROM wear leveling overhead |
| RTC with Alarm & Watchdog | Full calendar (leap-year aware), programmable alarm (minute/hour/day/month), and configurable watchdog timer - reduces need for external timing peripherals |
| Flexible RTC Backup | Supports either low-leakage capacitor (VRTCcap) or coin-cell battery (VRTCbat) - simplifies BOM and layout for different lifecycle requirements |
| Industrial Voltage & Temp | 3.0 V ±10% operation and –40°C to +85°C qualification - suitable for DIN-rail controllers, smart meters, and factory HMIs |
Applications
| Industrial Data Logger | Smart Energy Meter |
|---|---|
|
Use Scenario: Continuous recording of voltage, current, and kWh consumption with timestamped event capture during grid transients. IC Role / Device Role / Timing Role: Nonvolatile memory + RTC co-processor - stores last valid readings and timestamps power interruptions. Use Value: Maintains accurate time and critical metering data across 10+ years of operation with <0.35 µA RTC backup current and 20-year retention. |
Use Scenario: Tamper detection and billing data preservation during mains failure or battery removal. IC Role / Device Role / Timing Role: Dual-role nvSRAM + RTC - performs AutoStore on brown-out and logs tamper events with precise timestamps. Use Value: Eliminates separate RTC IC and EEPROM, reducing component count while guaranteeing sub-second timestamp accuracy and data integrity. |
| PLC I/O Module | Medical Infusion Pump |
|
Use Scenario: Storing configuration parameters, calibration offsets, and last-known I/O states for fail-safe restart after power cycle. IC Role / Device Role / Timing Role: Configuration and state memory with deterministic STORE/RECALL - retains safety-critical settings without host CPU involvement. Use Value: Enables <100 ms RECALL on power-up and hardware-triggered STORE via HSB, meeting IEC 61508 functional safety timing constraints. |
Use Scenario: Logging drug delivery history, error events, and maintenance records with audit-trail timestamps for FDA compliance. IC Role / Device Role / Timing Role: Secure, time-stamped nonvolatile storage - stores encrypted logs with RTC-synchronized timestamps and alarm-triggered emergency save. Use Value: Provides 20-year data retention and programmable alarm interrupts for overdue maintenance alerts - satisfies 21 CFR Part 11 record-keeping requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nvSRAM + RTC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STK15C88-3 | 1-Mbit nvSRAM + RTC, 45 ns access, 5 V operation, 64-pin SOIC | Requires 5 V supply and larger footprint; lacks AutoStore capacitor interface - needs external power-fail detection circuitry | Choose when legacy 5 V systems require minimal redesign and RTC backup is battery-only |
| FM31L278 | 256-Kbit FRAM + RTC, 3 V, 100 ns access, integrated battery switch, 28-pin SOIC | Lower density, slower access, but unlimited FRAM endurance; no STORE latency or VCAP timing constraints | Prefer for high-write-cycle applications where STORE latency or capacitor sizing is impractical |
Compared with STK15C88-3 and FM31L278, CY14B101KA-ZS25XIT uniquely combines 25 ns speed, 1-Mbit ×8 density, capacitor-driven AutoStore, and industrial-temp RTC in a compact 44-pin TSOP - optimizing for fast, reliable, low-power time-stamped data capture in space-constrained designs.
Availability
CY14B101KA-ZS25XIT is available at Aetrix Electronics and suitable for industrial data loggers, smart energy meters, and PLC I/O modules requiring stable component supply, long-term data retention, and integrated RTC functionality.
Supply support for CY14B101KA-ZS25XIT 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
Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability mixed-signal ICs for industrial, automotive, and IoT applications, with expertise in nonvolatile memory and timing solutions.
CY14B101KA belongs to Cypress's nvSRAM product line, engineered to replace battery-backed SRAM and discrete RTC + EEPROM combinations in mission-critical systems demanding zero-data-loss power fail recovery.
FAQ
What is the minimum VCAP capacitance required for reliable AutoStore operation?
The CY14B101KA-ZS25XIT requires a 4.7 µF tantalum capacitor on VCAP, rated ≥6.3 V, with ESR ≤5 Ω. This value ensures sufficient charge to complete STORE within tSTORE (max 20 ms) when VCC drops below VSWITCH (2.0 V). Ceramic capacitors are not recommended due to insufficient capacitance retention under bias.
Can the RTC operate independently while the nvSRAM is in deep sleep or powered down?
Yes - the RTC continues running from VRTCcap or VRTCbat even when VCC is removed, drawing only 0.35 µA typical. The nvSRAM core is disabled, but RTC registers, alarm, and watchdog remain fully functional and retain state, enabling wake-up interrupts without host power.
How does the HSB pin behave during a software STORE command?
During software STORE, HSB remains HIGH (weak pull-up) and does not assert LOW - it only signals busy state for hardware-triggered STORE and RECALL operations. Software STORE uses address-based command sequences and completes without HSB assertion, allowing concurrent status monitoring.
Is the CY14B101KA-ZS25XIT pin-compatible with the CY14B101MA variant?
No - CY14B101KA (×8) and CY14B101MA (×16) differ in data bus width, address mapping (A0–A16 vs A0–A15), and pin assignments: BHE/ BLE are present only on the MA version, and DQ8–DQ15 replace NC pins on the KA's 44-pin TSOP. Layout and firmware must be redesigned for interchange.
CY14B101KA-ZS25XIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- NVSRAM
- Technology:
- NVSRAM (Non-Volatile SRAM)
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY14B101KA-ZS25XIT FAQ
1.How can I place an order for CY14B101KA-ZS25XIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14B101KA-ZS25XIT 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 CY14B101KA-ZS25XIT reliable?
The price and inventory of CY14B101KA-ZS25XIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14B101KA-ZS25XIT is usually 5 days.
3.What payment methods are accepted for CY14B101KA-ZS25XIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14B101KA-ZS25XIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14B101KA-ZS25XIT?
CY14B101KA-ZS25XIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14B101KA-ZS25XIT 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 CY14B101KA-ZS25XIT?
For technical support, including CY14B101KA-ZS25XIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14B101KA-ZS25XIT requirements.
6.How does Aetrix verify that CY14B101KA-ZS25XIT is sourced from the original manufacturer or authorized distributors?
All CY14B101KA-ZS25XIT 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 CY14B101KA-ZS25XIT meets industry standards.
7.What is the process for return or replacement of CY14B101KA-ZS25XIT?
All CY14B101KA-ZS25XIT units undergo pre-shipment inspection (PSI). If there is an issue with CY14B101KA-ZS25XIT, 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 CY14B101KA-ZS25XIT part is unused and in its original packaging.
Return procedure for CY14B101KA-ZS25XIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY14B101KA-ZS25XIT 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
