Cypress relies on the performance that can serve a variety of high-reliability industrial, communications, data processing, medical, consumer and military applications, fast SRAM devices can provide on-chip ECC. These devices have a form matching function compatible with older generation asynchronous SRAMs. This allows you to improve system reliability without investing in PCB redesign.
High reliability: soft error rate <0.1FIT/Mbit
ERR pin indicates unit error
Density options: 4Mbit, 8Mbit, 16Mbit
Fast access time: 10ns (FAST)
Ultra-low standby current: 8.7μA (4MbitMoBL®)
Bus width configuration: x8 ,
X16 and x32 wide operating voltage range: 1.8-5.0V
industrial and automotive temperature ratings
Asynchronous SRAM with ECC is suitable for various industrial, medical, commercial, automotive and military applications that require the highest reliability and performance standards. Fast SRAM is ideal for network applications such as switches and routers, IP phones, test equipment, and automotive electronics. SRAM is used for high-performance, battery-powered solutions in a range of applications such as PLCs, multifunction printers and implantable medical devices.
Industrial controllers
Asynchronous SRAM devices are used in the design of programmable logic controllers (PLCs) to back up key tool locations and operating data that need to be protected from power failure. Backup power is provided by batteries or super capacitors.
The key requirement of industrial controller is to reduce power consumption and reduce soft error rate. In industrial controllers, soft errors can cause failures at startup due to damage to the setting information, leading to system failures.
Networking The
router is designed to use SRAM in the battery backup configuration to permanently store the startup configuration. This data is user-modifiable and is essential for the normal operation of the device. SRAM is also used to permanently store the hardware revision of the LAN interface, identification information and media access control (MAC) address. Unrecoverable soft errors can cause serious damage to traffic targets in network equipment.
A common configuration is shown in the schematic diagram shown in the figure below, which shows how MoBL®SRAM can be used in a battery-powered configuration with a Supervisory chip.
Multifunction printers
Multifunction printers (MFP) are the main application areas of MoBL®SRAM devices. Various data are stored permanently or temporarily in the MFP memory. Hard disk drives (HDD) or flash drives store various types of user information, while user tool settings, network settings and configuration data are stored in a dedicated MoBL®SRAM. SRAM is also used for job status and font tables. Data is vital to the operation of the device and is protected by the power cycle of the battery. Therefore, MFP design requires SRAM with high reliability and low error rate.
What if we let this circuit do some more complicated operations. For example: if you want the LED to turn on or off after a period of time after pressing the switch, then for the circuit with the single-chip microcomputer, you only need to change the program in the single-chip microcomputer, without changing the original circuit. On the other hand, for circuits without a single-chip microcomputer, it is necessary to add a timer IC to the meta-circuit, or use a standard logic IC and FPGA to form a logic circuit to achieve this function.
In other words, when changing and adding new functions, the circuit with a microcontroller is obviously easier to implement. This is the reason why electrical equipment uses MCU microcontrollers.