As aerospace applications put forward higher requirements for reliability, this is the biggest difference from general FPGA development. When high-energy particles hit a programmable logic device, the energy of the impact will change the configuration data of the configurable SRAM cell in the device, causing the system to run to an unpredictable state, causing the entire system to fail. This must be avoided in aerospace equipment. Compared with SRAM-based FPGAs, FPGAs based on FLASH and anti-fuse technology have great advantages in anti-single event events and high reliability. ACTEL is a provider of programmable logic solutions. It provides a variety of services, including FPGAs based on anti-fuse and FLASH Memory technology, high-performance IP cores, software development tools and design services, and is positioned in the high-speed communications, ASIC alternatives and radiation protection markets. ACTEL's FPGA ProASICPLUS series based on FLASH structure provides more system gates at low cost, and has greater advantages in military and aerospace grades. ProASICPLUS series FPGA adopts the second-generation FLASH technology-based 0.22μm standard CMOS process. It is a single-chip solution that does not require external configuration devices. It can run after power-on and can save configuration codes after power-off. It has lower power consumption and high-performance wiring structure. Each input port can choose Schmitt trigger structure, I/O can work under 2.5V or 3.3V voltage, with bidirectional global I/O port, compatible with PCI specification, and can realize bus interface. The biggest difference between ProASICPLUS series FPGAs and FPGAs based on SRAM technology is that it uses FLASH switches that run immediately after power-on as a programmable element. The structure of the FLASH switch is shown in the figure below. Two MOS transistors with floating characteristics save programmable information, which determines the switch state between the two metal lines through charging or discharging. The sensor transistor is used to write and detect the floating charge, and the switch transistor is used to connect or isolate the circuit and configure logic, and it can also be used to clear the gate charge. The structure of the core logic unit of ProASICPLUS series FPGA is shown in the figure below. Each logic unit has three inputs and one output. Any three-input one-output logic function except the three-input exclusive OR function can be implemented in one logic unit. It can also be configured as latches and flip-flops with clear and set, so the logic unit can be flexibly configured into various combinational logic gates and registers to realize various logic functions.
Full Capacity High Speed Micro Memory SD CARD U3 8GB 16GB 32GB 64GB 128GB Phone Memory Card
1.High Speed 4 8 16 32 64 128GB Micro Tf Sd Memory Card
Package Contents:
Ceamere Micro Meomry Card x 1
About Capacity:
16GB=approximately 14GB-15GB
32GB=approximately 28GB-30GB
64GB=approximately 58GB-60GB
128GB=approximately 115GB-119GB
256GB=approximately 230GB-238GB
Flash memory vendors:1MB = 1000KB,1G = 1000MB
Warm Tips:
How to verify the Capacity and Speed of the memory card?
1). Please use quality USB 3.0 card reader to verify all memory card by H2testw on PC. Real memory card should pass H2testw with no error.
2). Please don't use cheap card reader to test Micro SD memory card, speed of Micro SD memory card will be reduced by low quality card reader.
3). Micro SD memory card speed is greatly affected by card reader and the capacity you choose , USB port ect. Low quality device will 100% slow down card speed,1MB=1000KB.
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2.Class10 fast speed of reading and writing
3.Full capacity card,upgraded card
4.Use on mobile phone, pad, dvr camera...
5.Nationwide quality assurance
6.Product size:11mm*15mm*1mm
Operating system using binary arithmetic:1MB = 1024KB,1GB = 1024MB;
so there are some differences between display capacity and nominal capacity of flash memory product