N25S818HA: Serial SRAM Memory, 256-kb, 1.8 V

The ON Semiconductor serial SRAM family includes several integrated memory devices including this 256 kb serially accessed Static Random Access Memory, internally organized as 32 k words by 8 bits. The devices are designed and fabricated using advanced CMOS technology to provide both high-speed performance and low power. The devices operate with a single chip select (CS) input and use a simple Serial Peripheral Interface (SPI) serial bus. A single data in and data out line is used along with a clock to access data within the devices. The N25S818HA devices include a HOLD pin that allows communication to the device to be paused. While paused, input transitions will be ignored. The devices can operate over a wide temperature range of -40°C to +85°C and can be available in several standard package offerings.

Features
  • 1.7 to 1.95 V power supply range
  • Very low standby current - typical Isb as low as 200 nA
  • Very low operating current - as low as 3 mA
  • Simple memory control: single chip select (CS), serial input (SI) and serial output (SO)
  • Flexible operating modes: word read and write, page mode (32 word page), and burst mode (full array)
  • 32 K x 8 bit organization
  • Self timed write cycles
  • Built-in write protection (CS high)
  • HOLD pin for pausing communication
Collateral Brochures (1)
Document TitleDocument ID/SizeRevisionRevision Date
Medical Solutions BrochureBRD8081/D (7986kB)4Jul, 2016
Package Drawings (2)
Document TitleDocument ID/SizeRevision
SOIC-8751AZ (37.1kB)B
TSSOP 8 LEAD 3.0x4.4x1.1 mm948S-01 (70.3kB)C
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
256 kb Low Power Serial SRAMsN25S818HA/D (147.0kB)10
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
N25S818HAS21IActivePb-free Halide freeSOIC-8751AZ3Tube100Contact BDTIC
N25S818HAT21IActivePb-free Halide freeTSSOP-8948S-013Tube100Contact BDTIC
Specifications
ProductTypeDensityOrganization (bits)fcycle Max (MHz)VCC Min (V)VCC Max (V)Istandby Typ (µA)
N25S818HAS21ISerial256 kb32k x 8161.71.950.2
N25S818HAT21ISerial256 kb32k x 8161.71.950.2
256 kb Low Power Serial SRAMs (147.0kB) N25S818HA
Medical Solutions Brochure N64S830HA
SOIC-8 N64S830HA
TSSOP 8 LEAD 3.0x4.4x1.1 mm N64S830HA