CascadeTeq pSRAM sets a new benchmark for smart-wearable storage.

Smart Wearables: Storage Challenges and Innovations for All-Scenario Intelligence  

From simple step counters to all-in-one health, payment and entertainment hubs, wearables must pack high performance and long battery life into millimeters of space. The dominant architecture—low-power SoC + sensor array + radio + memory—now hits three memory walls:

• SRAM: nanosecond speed, yet ≤16 Mb is too small for multi-modal buffering.  

• DRAM: constant refresh burns standby power, cutting runtime.  

• Flash: erase-block latency causes dropped frames during real-time writes.

pSRAM (pseudo-SRAM) breaks these limits. An on-chip self-refresh controller slashes standby current to 1.8 µA (-90 % vs DRAM), keeps the SRAM-like interface for simple PCB routing, and bursts 416 MB/s at 104 MHz—perfect for continuous bio-signal capture.

128 Mbit pSRAM: the data engine inside smart wearables  

In premium watches and AR glasses, 128 Mbit pSRAM caches four hours of PPG at 20 Hz plus 30 minutes of ECG at 250 Hz while still buffering AI voice spectra. Sub-70 ns read latency lifts on-device AI response by 40 %, and PASR (partial-array self-refresh) drops sleep current to 0.8 µA, extending battery life by 30 %.

CascadeTeq CSS12804SU-O: redefining wearable-storage limits  

Key specs vs typical industrial rivals:  

- Bandwidth: 2.1 Gbps @133 MHz DDR (+31 %)  

- Standby: 1.8 µA (-88 %)  

- Temp: –40 °C to 85 °C (wider)  

- Package: 3 mm × 3 mm BGA24 (-44 % PCB area)  

- Protocol: dual-mode Xccela/OPI (SoC-ready)

A built-in DDR PHY with prefetch buffers boosts effective bandwidth to 95 %, and 0.8 mm-thin die fits the tightest watch stacks. Use cases span 96-hour heart-rate logs, 8 K@30 fps AR frame-buffers, and >99 % on-wrist gesture recognition.

Mandu, the official distributor, offers  

• platform-tuned reference designs for Unisoc W517 and Qualcomm Wear 4100+  

• 48-hour samples with –40 °C to 125 °C cycling and 50 G vibration tests  

• mass-production guides that cut R&D cycles by 35 %

Choosing CascadeTeq 128 Mbit pSRAM means “industrial-grade efficiency, mil-grade reliability, millimeter-scale integration.” With 2.1 Gbps bandwidth at <18 mW active power, it enables a 7-day charge cycle. Price is 30 % lower and lead-time six weeks shorter than overseas alternatives. Compatible pinout and software libraries for FreeRTOS/ThreadX make migration zero-cost. As wearables shift from passive logging to proactive intervention, CascadeTeq gives every millisecond of vital signs and every AR frame the zero-latency storage it demands.

About Mandu Technology

Shenzhen Mandu Technology Co., Ltd. has steadfastly centered its operations on the distribution of high-performance, high-quality, and highly reliable integrated circuit products. Its portfolio encompasses memory chips, differential crystal oscillators, and MCU microcontrollers, while progressively integrating analog signal chain products. The company prides itself on delivering comprehensive and cost-effective solutions to its customers. Its products find applications across a broad spectrum of industries, including but not limited to network communication, industrial control, robotics, medical equipment, personal health, and numerous other fields.

Business: sales@manduic.com

Website: www.manduic.com

Sales: +86 150-1290-5940