NVRAM 32k x 8

Cross-Reference

BRAND	TAG	NUMBER	PIN COUNT	OUTPUT	MARKINGS
Dallas	DS	1230	28		DS1230
Dallas	DS	1235	28		DS1235 DS1235Y DS1235AB
ST Microelectronics	ST	M48Z	28		M48Z35 M48Z35Y

Non-Volatile Random-Access Memory 32K x 8 (DIP28, 600mil)

Size

bit	Byte	Hex
256Kb	32KB	8000hex

Pinout

DIP28
         +---\/---+
     A14 | 1    28| Vcc
     A12 | 2    27| *WE
      A7 | 3    26| A13
      A6 | 4    25| A8
      A5 | 5    24| A9
      A4 | 6    23| A11
      A3 | 7    22| *OE
      A2 | 8    21| A10
      A1 | 9    20| *CE
      A0 |10    19| DQ7
     DQ0 |11    18| DQ6
     DQ1 |12    17| DQ5
     DQ2 |13    16| DQ4
     GND |14    15| DQ3
         +--------+

External links

NVRAM page on wikipedia

Files

• 
  DS1230 Datasheet
• 
  DS1235 Datasheet
• 
  M48Z35 Datasheet