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To deal with a standard buyer want for greater and sooner SRAM, Microchip Know-how has expanded its Serial SRAM product line to incorporate bigger densities of as much as 4 Mb and elevated Serial Peripheral Interface/Serial Quad I/O Interface (SPI/SQI) velocity to 143 MHz. The two Mb and 4 Mb gadgets are designed to supply a lower-cost various to conventional parallel SRAM merchandise and embrace non-compulsory battery backup switchover circuitry within the SRAM reminiscence to retain information on energy loss.
Microchip stated that not like parallel RAM, which requires giant packages and at the very least 26–35 microcontroller (MCU) I/Os to interface, its serial SRAM gadgets are available in a lower-cost, 8-pin bundle and make the most of a high-speed SPI/SQI communication bus that solely requires 4−6 MCU I/O pins for simple integration. This reduces the necessity for a costlier, high-pin-count MCU and can assist decrease the general board footprint.
The most typical disadvantage to serial SRAM is that that parallel is quicker than serial reminiscence. Therefore the corporate’s 2 Mb and 4 Mb serial SRAM gadgets have aimed to handle this by rising the bus velocity functionality to 143 MHz with non-compulsory quad SPI (4 bits per clock cycle), which vastly minimizes the velocity hole between options.
Microchip’s new serial SRAM gadgets. (Picture: Microchip)
Jeff Leasure, director of Microchip’s reminiscence merchandise enterprise unit, stated, “Serial SRAM is a well-liked resolution for engineers who want extra RAM than what is offered on board their MCU however want to scale back value and general board dimension. Microchip’s 2 Mb and 4 Mb serial SRAM gadgets are supposed to exchange costly parallel SRAM with a straightforward and cost-effective various.”
The small-form-factor, low-power, high-performance serial SRAM gadgets have, in accordance with the corporate, limitless endurance and 0 write instances, making them appropriate choices for functions involving steady information switch, buffering, information logging, metering and different math- and data-intensive capabilities. The gadgets can be found from 64 Kbit as much as 4 Mb in density and help SPI, SDI and SQI bus modes.
The two Mb and 4 Mb serial SRAM gadgets can be found beginning at $1.60 every in 10,000-unit portions.
Microchip is in Corridor 3A, Sales space 135 at embedded world on 9/11 April 2024.
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