ROHM BU9832GUL-WE2

BU9832GUL-W is a serial EEPROM of SPI BUS interface method.

• High speed clock action up to 5MHz (Max.)
• Wait function by HOLD terminal.
• Part or whole of memory arrays settable as read only memory area by program.
• 1.8 to 5.5V single power source action most suitable for battery use.
• Page write mode useful for initial value write at factory shipment. For SPI bus interface (CPOL, CPHA)=(0,0), (1, 1)
• Auto erase and auto end function at data rewrite.
• Low current consumption
  • At write action (5V): 1.5mA (Typ.)
  • At read action (5V): 1.0mA (Typ.)
  • At standby action (5V): 0.1μA (Typ.)
• Address auto increment function at read action
• Write mistake prevention function
  • Write prohibition at power on.
  • Write prohibition by command code (WRDI).
  • Write prohibition by WP pin.
  • Write prohibition block setting by status registers (BP1, BP0)
  • Write mistake prevention function at low voltage.
• Compact package W(Typ.) x D(Typ.) x H(Max.): 2.09mmx1.85mmx0.55mm
• Data at shipment Memory array: FFh, status register WPEN, BP1, BP0: 0
• Data kept for 40 years.
• Data rewrite up to 1,000,000 times.
• This IC has status registers. The status registers are of 8 bits and express the following parameters. 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.
• The value of status register can be read by read status command.