Pinout
Specifications
| Density |
256K bits |
| Max. Clock Freq. |
20 MHz |
| Page Size (bytes) |
32 |
| Endurance |
Unlimited |
| Op. Volt Range (V) |
2.7 to 3.6 |
| Temp Range (°C) |
-40°C to +125°C |
DescriptionThe Microchip Technology Inc. 23X256 are 256 KbitSerial SRAM devices. The memory is accessed via asimple Serial Peripheral Interface (SPI) compatibleserial bus. The bus signals required are a clock input(SCK) plus separate data in (SI) and data out (SO)lines. Access to the device is controlled through a ChipSelect (CS) input.Communication to the device can be paused via thehold pin (HOLD). While the device is paused,transitions on its inputs will be ignored, with theexception of Chip Select, allowing the host to servicehigher priority interrupts.The 23X256 is available in standard packagesincluding 8-lead PDIP and SOIC, and advancedpackaging including 8-lead TSSOP.
The 23K256 is designed as one kind of 256 Kbit Electrically Erasable PROM device that is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. Also this device is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead TSSOP.
Features of the 23K256 are:(1)Max. Clock 20 MHz; (2)Low-Power CMOS Technology: Read Current: 3 mA at 1 MHz and Standby Current: 4 uA Max. at +85; (3)8192 x 8-bit Organization; (4)32-Byte Page; (5)HOLD pin; (6)Sequential Read/Write; (7)High Reliability; (8)Pb-Free and RoHS Compliant, Halogen Free.etc.
The absolute maximum ratings of the 23K256 can be summarized as:(1)VCC: 4.5 V;(2)All inputs and outputs w.r.t. VSS: -0.3V to VCC +0.3V;(3)Storage temperature: -65°C to +150°C;(4)Ambient temperature with power applied: -40°C to +85°C;(5)ESD protection on all pins: >/= 2 kV. If you want to know more information about the 23K256, please download the datasheet in www.seekic.com or www.chinaicmart.com .
23K256 Data Sheet
