MR45V032AMAZBATL ROHM

PEDR45V032A-05 Issue Date: Nov. 08, 2011 MR45V032A 32k(4,096-Word 8-Bit) FeRAM (Ferroelectric Random Access Memory) SPI GENERAL DESCRIPTION The MR45V032A is a nonvolatile 4,096-word x 8-bit ferroelectric random access memory (FeRAM) developed in the ferroelectric process and silicon-gate CMOS technology. The MR45V032A is accessed using Serial Peripheral Interface.Unlike SRAMs, this device, whose cells are nonvolatile, eliminates battery backup required to hold data. This device has no mechanisms of erasing and programming memory cells and blocks, such as those used for various EEPROMs. Therefore, the write cycle time can be equal to the read cycle time and the power consumption during a write can be reduced significantly. The MR45V032A can be used in various applications, because the device is guaranteed for the write/read 12 tolerance of 10 cycles per bit and the rewrite count can be extended significantly. FEATURES 4,096-word 8-bit configuration (Serial Peripheral Interface : SPI) A single 2.7V3.6V 3.3 V typ power supply Operating frequency: 15MHz 12 Read/write tolerance 10 cycles/bit Data retention 10 years Guaranteed operating temperature range 40 to 85C (Extended temperature version) Package options: 8-pin plastic SOP (P-SOP8-200-1.27-T2K ) 1/20 MR45V032A PEDR45V032A-05 MR45V032A PIN CONFIGURATION 8-pin plastic SOP VCC CS 1 8 SO HOLD 2 7 SCK WP 3 6 VSS4 5 SI Note: Signal names that end with indicate that the signals are negative-true logic. 2/20