ROHM BR25G1MFJ-3GE2

BR25G1M-3 is a 1Mbit Serial EEPROM of SPI BUS Interface.

• High Speed Clock Action up to 10MHz (Max)
• Wait Function by HOLDB Terminal
• Part or Whole of Memory Arrays Settable as Read only Memory Area by Program
• 1.8V to 5.5V Single Power Source Operation Most Suitable for Battery Use.
• Up to 256 Bytes in Page Write Mode.
• For SPI Bus Interface {CPOL,CPHA}=(0,0),(1,1)
• Self-timed Programming Cycle
• Low Current Consumption
  • At Write Action (5V) : 0.7mA (Typ)
  • At Read Action (5V) : 2.4mA (Typ)
  • At Standby Action (5V) : 0.1μA (Typ)
• Address Auto Increment Function at Read Action
• Prevention of Write Mistake
  • Write Prohibition at Power On
  • Write Prohibition by Command Code (WRDI)
  • Write Prohibition by WPB Pin
  • Write Prohibition Block Setting by Status Registers (BP1, BP0)
  • Prevention of Write Mistake at Low Voltage
• More than 100 years Data Retention.
• More than 1 Million Write Cycles.
• Bit Format 128Kx8
• Initial Delivery Data Memory Array: FFh
• Status Register: WPEN, BP1, BP0 : 0
• This IC has status register. The status register expresses the following parameters of 8 bits.
• BP0 and BP1 can be set by write status register command. These 2 bits are memorized into the EEPROM, therefore are valid even when power source is turned off.
• Rewrite characteristics and data hold time are same as characteristics of the EEPROM.
• WEN can be set by write enable command and write disable command. WEN becomes write disable status when power source is turned off.
• R/B is for write confirmation, therefore cannot be set externally.