MB85RS256A
Description
MB85RS256A is a FRAM (Ferroelectric Random Access Memory) chip in a configuration of 32,768 words × 8 bits, using the ferroelectric process and silicon gate CMOS process technologies for forming the nonvolatile memory cells.
Key Features
- Pin Name Functional description Chip Select This is an input pin to make chips select
- When CS is “H”, device is in deselect (standby) status as long as device is not write status internally, and SO bees High-Z
- Other inputs from pins are ignored for this time
- When CS is “L”, device is in select (active) status
- CS has to be “L” before inputting op-code
- Write Protect This is a pin to control writing to a status register
- When WP is “L”, writing to a status register is not operated
- Hold This pin is used to interrupt serial input/output without making chips deselect
- When HOLD is “L”, hold operation is activated, SO bees High-Z, SCK and SI bee don’t care
- While the hold operation, CS has to be retained “L”
