The AT93C56 provides 2048 bits of serial electrically erasable programmable read-only memory (EEPROM), organized as 128 words of 16 bits
each (when the ORG pin is connected to VCC), and 128 words of 8 bits each
(when the ORG pin is tied to ground). The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operations are
essential. The AT93C56 is available in space-saving 8-lead PDIP, 8-lead
JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead MAP, 8-lead TSSOP, and 8-lead dBGA2
packages.
Description: The AT93C56 provides 2048 bits of serial electrically erasable programmable read-only memory (EEPROM), organized as 128 words of 16 bits each (when the ORG pin is connected to VCC), and 128 words of 8 bits each (when the ORG pin is tied to ground). The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operations are essential. The AT93C56 is available in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead MAP, 8-lead TSSOP, and 8-lead dBGA2 packages. The AT93C56 is enabled through the Chip Select pin (CS) and accessed via a three-wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK). Upon receiving a Read instruction at DI, the address is decoded and the data is clocked out serially on the DO pin. The Write cycle is completely self-timed, and no separate Erase cycle is required before Write. The Write cycle is only enabled when the part is in the Erase/Write Enable state. When CS is brought high following the initiation of a Write cycle, the DO pin outputs the Ready/Busy status of the part. The AT93C56 is available in 2.7V to 5.5V and 1.8V to 5.5V versions.
Features • Low-voltage and Standard-voltage Operation – 2.7 (VCC = 2.7V to 5.5V) – 1.8 (VCC = 1.8V to 5.5V) • User-selectable Internal Organization – 2K: 256 x 8 or 128 x 16 • Three-wire Serial Interface • 2 MHz Clock Rate (5V) • Self-timed Write Cycle (10 ms max) • High Reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years • Automotive Grade, Extended Temperature and Lead-Free/Halogen-Free Devices Available • 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead MAP, 8-lead TSSOP, and 8-ball dBGA2 Packages
Driver chip: L298N dual H-bridge driver chip
Terminal driver part of the supply area VMS: +5V ~ +35V
Drive part of the peak current Io: 2A / Bridge
Logical part of the terminal power supply range Vss :4.5-5 .5V
Logical part of the operating current range: 0 ~ 36mA
13.56MHz contactless communication card chip
Low-voltage, low-cost, small size of the non-contact card chip to read and write
Smart meters and portable handheld devices developed better choice
The MF RC522 use of advanced modulation and demodulation concept completely integrated in all types of 13.56MHz
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