View ds1230w datasheet:

DS1230W 3.3V 256k Nonvolatile SRAM www.maxim-ic.com FEATURES PIN ASSIGNMENT 10 years minimum data retention in the VCC A14 1 28 absence of external power A12 27 WE 2 A7 3 26 A13 Data is automatically protected during power A6 4 25 A8 loss A9 A5 5 24 Replaces 32k x 8 volatile static RAM, A4 6 23 A11 A3 OE EEPROM or Flash memory 7 22 A2 8 21 A10 Unlimited write cycles A1 C

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BJT: SBT42 | 2SA200-Y | 2SA200-O | 2SD882-Q | 2SD882-P | 2SD882-E | 2SC945-L | 2SC945-H | 2SC4226-R23 | 2SC3357-F | 2SC3357-E | 2SC3356-R26 | 2SC3356-R24 | 2SC3356-R23 | 2SB772-Q | 2SB772-P | 2SB772-E | 2SA1015-L | 2SA1015-H | HSS8550 | HSS8050