CY14B101KA-ZS25XI - 1Mb nvSRAM 25ns 3V TSOP II | Infineon
MPN: CY14B101KA-ZS25XI β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.2 | $8.20 |
| 10 | $7.45 | $74.50 |
| 100 | $6.7 | $670.00 |
| 500 | $6.15 | $3,075.00 |
| 1,000 | $5.7 | $5,700.00 |
CY14B101KA-ZS25XI Overview
nvSRAM is a class of non-volatile memory that combines the fast, unlimited-endurance read/write behavior of static RAM with non-volatility traditionally provided by EEPROM or Flash. In the memory hierarchy, it sits between plain SRAM (volatile) and battery-backed SRAM or serial EEPROM, forming part of the broader family of memory ICs used for data logging and configuration storage. The non-volatile elements in this device use Cypress QuantumTrap technology, which stores the SRAM contents into non-volatile cells automatically on power loss or on demand via a STORE operation, and recalls them via RECALL on power-up.
Key features include a fast 25 ns parallel access time suitable for zero-wait-state microprocessor buses, 1 Mbit (128K x 8) density, hardware and software STORE control, automatic STORE on power failure with a capacitor-backed VCAP pin, and over 1 million store cycles with effectively unlimited SRAM read/write endurance. The integrated RTC adds timekeeping with an external 32.768 kHz crystal, alarm functions, and its own backup power input, eliminating a separate RTC chip in many designs.
Architecturally, the device is a monolithic IC combining an SRAM core, QuantumTrap non-volatile elements, and RTC logic. On power-up, a hardware RECALL restores SRAM contents, allowing systems to resume operation immediately without re-initializing configuration or log data.
Typical applications include industrial data loggers, event recorders in metering and power-line equipment, configuration storage in networking and telecom line cards, and medical devices that must preserve state through unexpected power interruptions.
Design-wise, size the VCAP reservoir capacitor per the datasheet so the automatic STORE completes after power fail; the capacitor is the only non-trivial external component besides the RTC crystal.
This page synthesizes distributor availability data, drop-in alternatives, and practical design notes beyond what the manufacturer datasheet provides.
Drop-in alternatives for CY14B101KA-ZS25XI β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with CY14B101KA-ZS25XI (same form factor and footprint) β differing in Access Time, Density, Interface, Memory Type, Operating Temperature.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
CY14B101KA-ZS45XI
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$6.4 / Unit
View Datasheet βCY14B101MA-ZS25XI
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
CY14B101MA-ZS45XI
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
CY14B101KA-ZS25XI Maximum Ratings & Electrical Characteristics
| Memory Type | nvSRAM (Non-Volatile SRAM) with RTC |
| Density | 1 Mbit (1024 kbit) |
| Organization | 128K x 8 |
| Interface | Parallel |
| Access Time | 25 ns |
| Supply Voltage | 2.7 V to 3.6 V (nominal 3 V) |
| SRAM Read/Write Endurance | Unlimited |
| RTC | Yes, with alarm and external 32.768 kHz crystal |
| Automatic STORE | Yes, on power fail via VCAP |
| Package | 44-TSOP II |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) |
| Technology | QuantumTrap non-volatile elements |
| RoHS Status | RoHS compliant (per package marking ZS25XI) |
CY14B101KA-ZS25XI 44-tsop ii Pin Configuration Guide
Pin configuration for CY14B101KA-ZS25XI (44-tsop ii package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for CY14B101KA-ZS25XI.
Refer to the datasheet for full pin configuration.
Typical Applications
CY14B101KA-ZS25XI is suitable for 6 applications: Industrial Data Logging, Utility Metering and Event Recording, Networking and Telecom Line Cards, Medical Device State Preservation, Factory Automation Controllers, Point-of-Sale and Security Terminals.
Industrial Data Logging
The CY14B101KA-ZS25XI fits industrial data loggers because it pairs unlimited SRAM write endurance with QuantumTrap non-volatile capture, so high-frequency sensor samples can be written continuously without the wear-out limits of Flash, and nothing is lost when plant power fails. Its 25 ns parallel interface lets a low-cost MCU complete a store-and-index cycle in microseconds, sustaining logging rates far above serial EEPROM. The 128K x 8 organization stores roughly 128,000 byte records, and the integrated RTC timestamps each entry. Designers should size the VCAP capacitor to guarantee the automatic STORE completes after mains loss.
Recommended
Utility Metering and Event Recording
Electricity, gas, and water meters must preserve tamper events, load profiles, and tariffs through outages and brownouts. The CY14B101KA-ZS25XI addresses this with automatic STORE on power failure, holding the 128K x 8 SRAM image in QuantumTrap cells without a battery, while the integrated RTC with alarm maintains billing-grade timekeeping on its backup supply. The -40C to +85C industrial rating covers unconditioned meter enclosures, and the 25 ns access time supports fast coefficient table lookups during measurement interrupts. Store-cycle endurance above one million comfortably handles daily tariff writes for the meter lifetime.
Recommended
Networking and Telecom Line Cards
Line cards and control blades need configuration, MAC addresses, and fault logs to survive hot-swaps and uncommanded power cycles. The CY14B101KA-ZS25XI's 25 ns parallel bus keeps POST-time config reads off the critical path, effectively zero-wait-state on typical CPU local buses, while QuantumTrap non-volatility removes the field-replacement battery that battery-backed SRAM requires. The RTC provides real-time fault stamps for syslog correlation. With 1 Mbit organized 128K x 8, a single chip holds firmware settings plus history buffers, and the 44-TSOP II footprint fits standard card layouts.
Recommended
Medical Device State Preservation
Infusion pumps, patient monitors, and diagnostic instruments must resume exactly where they stopped after an interrupted power event, a regulatory as well as usability requirement. The CY14B101KA-ZS25XI stores therapy parameters and session state in its 1-Mbit SRAM continuously and captures it non-volatively automatically on power fail, without firmware-managed EEPROM wear algorithms. The RTC keeps timestamps valid for audit logs on backup power. Designers should verify VCAP capacitance against worst-case supply slew so the STORE window is guaranteed under fast brownout conditions described in the datasheet.
Recommended
Factory Automation Controllers
PLC I/O modules and motor-drive controllers keep parameter sets, recipe tables, and wear statistics that must survive every power cycle. The CY14B101KA-ZS25XI lets the controller write tuning data to SRAM at full bus speed during commissioning, with QuantumTrap STORE preserving the final set non-volatively. Its -40C to +85C range suits cabinet-less installations, and the RTC schedules maintenance counters and shift logs. Compared with serial EEPROM parameter storage, the 25 ns parallel access removes multi-millisecond block-read latency from the control loop, and unlimited SRAM endurance permits unlimited in-service retuning.
Recommended
Point-of-Sale and Security Terminals
POS terminals and access-control panels require transaction journals and event trails that survive both intentional power cuts and attacks on supply lines. The CY14B101KA-ZS25XI commits each record to SRAM instantly and the automatic STORE captures the journal on any power loss, while the RTC enforces tamper-evident timestamps. The 128K x 8 array holds tens of thousands of audit entries, and 3 V operation matches battery-assisted terminal architectures. The 44-TSOP II package supports compact terminal PCBs, and industrial temperature rating covers outdoor kiosk enclosures.
Recommended
Recommended Products Summary
Engineering reference data for CY14B101KA-ZS25XI β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CY14B101KA-ZS45XI | CY14B101MA-ZS25XI | CY14B101MA-ZS45XI |
|---|---|---|---|---|
| Package | 44-TSOP II | 44-TSOP II - same | 44-TSOP II - same | 44-TSOP II - same |
| Brand | Infineon Technologies (Cypress) | Infineon Technologies (Cypress) | Infineon Technologies (Cypress) | Infineon Technologies (Cypress) |
| Density | 1 Mbit | 1 Mbit | 1 Mbit | 1 Mbit |
| Organization | 128K x 8 | 128K x 8 | 64K x 16 | 64K x 16 |
| Access Time | 25 ns | 45 ns | 25 ns | 45 ns |
| Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Integrated RTC | Yes | Yes | Yes | Yes |
Key Differentiators
- Fastest grade in the 1-Mbit parallel family (vs CY14B101KA-ZS45XI)
- Byte-wide 8-bit bus organization (vs CY14B101MA-ZS25XI)
- Battery-free non-volatility vs battery-backed SRAM (vs conventional BBSRAM modules)
Design Notes
Estimated: the VCAP capacitor must store enough energy for the automatic STORE sequence after power fail. Size it exactly to the datasheet-recommended value and tolerance; using an undersized or high-ESR capacitor risks corrupting the non-volatile image during brownouts. Place VCAP close to the pin with a short, wide trace, and ensure the supply rails decay monotonically below the store-protection threshold so the STORE is triggered cleanly on every power-down event.
Treat the 32.768 kHz RTC crystal as a sensitive analog node: route it short, symmetric, and away from the fast parallel address/data bus, guarded by ground. Decouple VDD with 0.1 uF ceramic plus bulk capacitance at the TSOP II package. Because the 25 ns address/data transitions are fast for a memory IC, series-terminate long bus lines (22-33 ohm) to control ringing and reduce EMI on backplane designs.
Do not issue software STORE more often than the datasheet cycle-time allows, and respect the store-cycle endurance limit when logging at high rates - write freely to SRAM, but batch non-volatile commits. Also note the RTC backup pin needs its own battery/supercapacitor; omitting it loses timekeeping during outages even though memory data survives. Finally, verify the access-time grade (25 ns vs 45 ns) against your worst-case bus timing including buffers and backplane delay.
Compliance Information
Package marking suffix XI denotes lead-free/RoHS-compliant industrial-grade part per Cypress naming conventions; REACH and conflict-minerals status not stated in retrieved data.
