CY14101V - 1-Mbit Quad SPI nvSRAM | Infineon | Non-Volatile SRAM
MPN: CY14101V ✓ פעילCY14101V סקירה
A Non-Volatile SRAM (nvSRAM) is a hybrid memory class that pairs a conventional SRAM cell array with a parallel non-volatile store (typically a SONOS or ferroelectric process) under the same die. On power-down the SRAM contents are autonomously recalled into the nvSTORE; on power-up they are restored to the SRAM cells, giving the engineer 'battery-free NVRAM' behavior. Within the broader taxonomy, nvSRAM sits between SRAM (volatile, fast, unlimited writes) and EEPROM/flash (non-volatile, slow write, page/block erase, limited endurance), giving nvSRAM byte-level writes at SRAM speeds with infinite endurance for the volatile side and >1 million STORE cycles for the non-volatile side.
The CY14101V supports Single, Dual, and Quad SPI transfer modes, allowing up to four bits per clock cycle in Quad mode. The device operates as an SPI slave, with chip select (/CS), serial clock (SCK), and four I/O pins (IO0-IO3) for data transfer, plus a /HOLD pin for pausing serial communication. It is enabled through chip-select assertion and accessed using standard SPI opcodes including READ, WRITE, and status register commands.
In typical operation the CY14101V delivers zero-cycle latency reads and writes up to 40 MHz in single/dual/quad modes, with optional 108-MHz operations introducing cycle latency on reads. The device includes a STORE-on-power-down watchdog, automatic RECALL on power-up, and an industry-standard 16-pin SOIC or 24-ball BGA footprint option across family variants. The CMOS process provides low standby current and unlimited read/write endurance for the SRAM array.
Typical applications include data logging in industrial controllers, parameter retention in metering equipment, event capture in point-of-sale terminals, configuration storage in networking gear, and fail-safe scratchpad memory in medical instruments. The Quad SPI bus also suits high-throughput FPGA and DSP boot/log buffers where fast restore-after-reset is required.
When designing with the CY14101V, ensure decoupling caps are placed within 5 mm of VDD with a low-ESR 0.1 uF parallel to a 4.7 uF bulk cap. The /HOLD and /WP pins must be tied to VIO (or driven by the host) to avoid unintended interruption of SPI operation. Verify that host SPI controller supports 1-, 2- and 4-bit modes required to leverage the full Quad throughput.
This page synthesizes Infineon datasheet parameters, equivalent-drop-in alternative mapping across the CY14V101 family, and practical design notes not collated in the manufacturer datasheet alone.
חלופות תחליף ישיר עבור CY14101V — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
CY14V101QS-SFXI
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
CY14V101QS-BK108XI
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
CY14V101Q3-SFXI
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
CY14B101PA-SFXI
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
CY14V101PS-SF108XI
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
CY14101V דירוגים מרביים ומאפיינים חשמליים
| סוג זיכרון | Non-Volatile SRAM (nvSRAM) |
| Memory Density | 1 Mbit |
| Memory Organization | 128K words x 8 bits |
| ממשק | SPI (Single, Dual, Quad mode) |
| Maximum Clock Speed (Standard SPI) | 40 MHz (zero-cycle latency read/write) |
| Maximum Clock Speed (High-Speed) | 108 MHz (cycle-latency read-only) |
| SPI Modes Supported | Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) |
| Endurance (SRAM Array) | Unlimited read/write cycles |
| Package Family | 16-SOIC and 24-FBGA (family variants) |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant |
| Non-Volatile STORE Technology | On-chip SONOS-based nvSTORE (battery-free) |
| Slave/Master Mode | SPI Slave |
תצורת פינים של CY14101V
| פין 1 | /CS — Chip Select (active low) enables SPI access |
| פין 2 | SO/IO1 — Serial Output in Single mode; IO1 in Dual/Quad SPI |
| פין 3 | /WP — Write Protect (active low); IO2 in Quad SPI mode |
| פין 4 | VSS — Ground reference |
| פין 5 | SI/IO0 — Serial Input in Single mode; IO0 in Dual/Quad SPI |
| פין 6 | SCK — Serial Clock input from SPI master |
| פין 7 | /HOLD — Hold (active low) pauses SPI transfer; IO3 in Quad SPI mode |
| פין 8 | VDD — Power supply input |
| פין 9 | VDD — Power supply input (duplicate pin for reduced inductance) |
| פין 10 | /HOLD/IO3 — Hold or IO3 quad-SPI pin (variant-specific) |
| פין 11 | SCK — Serial Clock input (duplicate pin) |
| פין 12 | SI/IO0 — Serial Input or IO0 (duplicate) |
| פין 13 | VSS — Ground (duplicate pin) |
| פין 14 | /WP/IO2 — Write protect or IO2 quad-SPI pin |
| פין 15 | SO/IO1 — Serial Output or IO1 (duplicate) |
| פין 16 | /CS — Chip Select (duplicate pin) |
יישומים טיפוסיים
CY14101V מתאים עבור 6 יישוםs: Industrial Data Logger Non-Volatile Buffer, Smart Energy Meter Tamper-Evident Parameter Store, POS Terminal Transaction Journal Memory, FPGA and DSP Configuration Rollback Cache, Medical Device Event Recorder, Networking Switch Configuration and Counter Cache.
Industrial Data Logger Non-Volatile Buffer
The CY14101V's 1-Mbit density and zero-cycle-latency 40-MHz Quad SPI give industrial data loggers a fail-safe scratchpad where fault events and last-known-good process state must survive unplanned power loss. Its battery-free SONOS-based nvSTORE eliminates the maintenance burden of coin cells. Placed between the MCU and the main flash array, the part stores the most recent 128-KB history window; on power-up the SRAM array is automatically repopulated, so the application can resume without a cold-boot reconciliation step.
מומלץ
Smart Energy Meter Tamper-Evident Parameter Store
Smart meters rely on the CY14101V to retain calibration coefficients, billing counters, and tamper-event flags across power cycles. The device's unlimited SRAM write endurance handles the thousands of kWh updates per day, and its non-volatile STORE guarantees the data survives brown-outs and metrology tampering events. The Quad SPI bandwidth allows utilities to read the full 128 KB log during a maintenance query in under 50 ms at 40 MHz, keeping the technician's handheld in and out of the meter quickly.
מומלץ
POS Terminal Transaction Journal Memory
Point-of-sale terminals use the CY14101V as a transaction journal buffer so that the last 128-KB of receipts, signature captures, and loyalty state survive a sudden power loss during checkout. Because writes complete in zero cycles at 40 MHz, the part keeps up with a 4 ms transaction window. On power restore, the cashier can resume the disrupted sale without losing data, which is critical for PCI audit trails. The 16-SOIC footprint fits compact SMD POS board layouts.
מומלץ
FPGA and DSP Configuration Rollback Cache
FPGA-based designs adopt the CY14101V to keep the last known-good golden image and rollback register so a partially programmed bitstream is not bricked on field-update events. The 1-Mbit density is large enough for small golden images plus register snapshots, and Quad SPI supports 40 MHz downloads by the FPGA's MultiBoot controller. The infinite-write SRAM side lets the design stash active configuration keys in real time without wearing a flash cell.
מומלץ
Medical Device Event Recorder
Battery-free non-volatile retention makes the CY14101V attractive for medical event recorders, infusion-pump logs, and portable diagnostic carts that must keep the last patient event sequence across unexpected battery swap or brown-out. The Quad SPI gives the device a comfortable margin for streaming waveform pre-trigger buffers; on power restore the recorder can rewrite the SRAM contents as if nothing happened, simplifying FDA audit trail reconstruction. The 16-SOIC and BGA package options help designers meet small-form-factor medical enclosure constraints.
מומלץ
Networking Switch Configuration and Counter Cache
High-port-count switches and routers benefit from a per-port counter cache built on the CY14101V, where each port writes byte and packet counters continuously without the wear concern of flash. On reboot, the SRAM contents auto-reload from the nvSTORE; the switch ASIC no longer needs to snoop counters through slow I2C EEPROM. The Quad SPI fits cleanly into a switch management FPGA's existing SPI tree, and the 1-Mbit capacity supports several thousand 32-bit counters per port.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור CY14101V — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | CY14V101QS-SFXI | CY14V101QS-BK108XI | CY14V101Q3-SFXI | CY14B101PA-SFXI | CY14V101PS-SF108XI |
|---|---|---|---|---|---|---|
| Package | 16-SOIC (CY14101V ordering code) | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Memory Density | 1 Mbit (128K x 8) | 1 Mbit | 1 Mbit | 1 Mbit | 1 Mbit | 1 Mbit |
| Interface | Quad SPI (QPI) | Quad SPI (QPI) | Quad SPI (QPI) | Standard SPI | SPI | Parallel |
| Max Clock Frequency | 40 MHz (zero-cycle latency) | 40 MHz zero-cycle | 108 MHz (cycle-latency read) | 30 MHz zero-cycle | 40 MHz | Parallel async / 108 MHz |
| Non-Volatile Store Type | On-chip SONOS nvSTORE (battery-free) | SONOS nvSTORE | SONOS nvSTORE | SONOS nvSTORE | SONOS nvSTORE | SONOS nvSTORE |
| Compliance / RoHS | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
מבדילים עיקריים
- Battery-free non-volatile retention replaces coin-cell NVRAM (לעומתBattery-backed SRAM modules)
- Quad SPI interface up to 40 MHz zero-latency (לעומתCY14V101Q3 standard SPI at 30 MHz)
- 108-MHz high-speed read mode with cycle latency (לעומתCY14V101QS-SFXI 40 MHz zero-latency)
הערות תכנון
Place a 0.1 uF X7R ceramic decoupling capacitor within 5 mm of the VDD pin, with a 4.7 uF tantalum or polymer bulk cap on the same rail. The CY14101V's internal STORE operation happens autonomously when VDD drops below the in-chip threshold; if the supply falls too slowly the STORE cycle may not complete, so add a voltage supervisor that asserts /CS and forces a deliberate STORE before power removal if your system cannot guarantee a fast monotonic VDD fall.
Route the four SPI data I/Os (IO0-IO3) as length-matched parallel traces on a single PCB layer to within 0.5 mm, keeping the series impedance below 50 ohms. Place the 16-SOIC part with the /CS trace first to a 10 kohm pull-up to VDD; a floating /CS can falsely enable the part and corrupt the nvSTORE during power transitions. Source: Infineon CY14V101QS datasheet layout recommendations.
Do not confuse the CY14101V with the parallel-bus CY14V101PS - the SPI opcode set differs and migrating between them requires both firmware and PCB changes. Tie /HOLD and /WP to VIO via 10 kohm pull-ups during board bring-up so that a floating pin does not inadvertently freeze the SPI or block writes. Avoid issuing back-to-back READ/STATUS opcodes faster than the tCSH timing in the datasheet - the part will discard the second chip-select pulse and silent data corruption can occur.
Operating the CY14101V at the 108 MHz high-speed read mode adds cycle-latency overhead and tighter SCK duty-cycle requirements; keep the SCK trace to 25 mm or shorter and add a 33-ohm series terminator at the source to suppress ringback on the rising/falling edges. Source: Infineon CY14V101QS datasheet AC timing section. Verify with a 2 Gs/s scope that the SCK duty cycle stays between 45-55%.
מידע על תאימות
CY14101V is RoHS/REACH compliant per Infineon product page; lead-free finish confirmed. AEC-Q100 grade depends on ordering suffix - the standard CY14101V ordering code is industrial grade, while -I suffix indicates automotive-grade screening. Cross-check the full ordering code with Infineon ordering guide.
