This shows you the differences between two versions of the page.
azonenberg:microchip:23k256 [2014/04/08 07:26] azonenberg |
azonenberg:microchip:23k256 [2015/01/04 22:50] |
||
---|---|---|---|
Line 1: | Line 1: | ||
- | {{tag> | ||
- | SPI serial SRAM chip. Looks like 4 metal layers and a fairly fine process geometry. | ||
- | |||
- | Definitely //not// one of Microchip' | ||
- | |||
- | The die ID also does not match the normal Microchip layout and there is no Microchip logo on the die. Maybe this mask set was acquired from a buyout or something? | ||
- | |||
- | There are three unbonded pads on the die. Purpose of these is unknown at this time since all known packages are 8 pins. | ||
- | |||
- | ====== Package ====== | ||
- | |||
- | 8-pin SOIC. | ||
- | |||
- | {{: | ||
- | |||
- | Markings: | ||
- | |||
- | 23K256I | ||
- | SN (e3) 1002 | ||
- | (Microchip logo) ADJ | ||
- | | ||
- | ====== Die ====== | ||
- | |||
- | Size is approximately 2110 x 1120 μm (2.36 mm< | ||
- | |||
- | {{: | ||
- | |||
- | Die copyright area. Markings: | ||
- | |||
- | M4-B | ||
- | (C) (M) 2006 | ||
- | E1090-A | ||
- | | ||
- | {{: | ||
- | |||
- | Top left of SRAM array | ||
- | |||
- | {{: | ||
- | |||
- | Middle of SRAM array | ||
- | |||
- | {{: | ||
- | |||
- | Random logic, with focus on M4 and on M3 | ||
- | |||
- | {{: | ||
- | |||
- | {{: |