27040

Cross-Reference

BRAND	TAG	NUMBER	PIN COUNT	MARKINGS
AMD	Am	27C040	DIP32 LCC32	Am27C040
ASI	SMJ	27C040	DIP32	SMJ27C040
Atmel	AT	27C040	DIP32 LCC32 SOIC32 TSOP32	AT27C040
Cypres	CY	27C040	DIP32 LCC32 TSOP32	CY27C040
Exodus Microel.	EM	27C040	DIP32	EM27C040
Fairchild	FM	27C040	DIP32 LCC32	FM27C040
Fairchild	NM	27C040	DIP32 LCC32	NM27C040
Holtek	HT	27C040	DIP32 LCC32 SOIC32	HT27C040
Intel	D/I	27C040	DIP32 LCC32	i27C040 D27C040
Intel	MD	27C040	DIP32	MD27C040
Intel	N	27C040	LCC32	N27C040
Micross	SMJ	27C040	DIP32	SMJ27C040
National	NM	27C040	DIP32 LCC32	NM27C040
Philips	NXP	27C040	DIP32	NXP27C040
Signetics	S	27C040	DIP32	S27C040
Texas Instr.	SMJ	27C040	DIP32	SMJ27C040
Texas Instr.	TMS	27C040	DIP32 LCC32	TMS27C040 TMS27PC040
Winbond	W	27C040	DIP32 LCC32 SOIC32 TSOP32	W27C040
WSI	WS	27C040	DIP32	WS27C040D
unknown	OT	27C040	DIP32 LCC32	OT27C040

EPROM 27040 & 27C040

Size

bit	Byte	Hex organization
4Mb	512KB (524.288 byte)	80000hex8

Pinout

       DIP32-600mil
      SOIC32-450mil
         +--\/--+
     Vpp |1   32| Vcc
     A16 |2   31| A18
     A15 |3   30| A17
     A12 |4   29| A14
     A7  |5   28| A13
     A6  |6   27| A8
     A5  |7   26| A9
     A4  |8   25| A11
     A3  |9   24| *OE/Vpp
     A2  |10  23| A10
     A1  |11  22| *CE/*PGM
     A0  |12  21| O7
     O0  |13  20| 06
     O1  |14  19| O5
     O2  |15  18| O4
     GND |16  17| O3
         +------+

              LCC32-450x550mil
+--------------------------------------------+
|  5 A7   |         | 21 DQ7       |         |
|  6 A6   | 14 DQ1  | 22 *CE/*PGM  | 30 A17  |
|  7 A5   | 15 DQ2  | 23 A10       | 31 A18  |
|  8 A4   | 16 Vss  | 24 *OE       | 32 Vcc  |
|  9 A3   | 17 DQ3  | 25 A11       |  1 Vpp  |
| 10 A2   | 18 DQ4  | 26 A9        |  2 A16  |
| 11 A1   | 19 DQ5  | 27 A8        |  3 A15  |
| 12 A0   | 20 DQ6  | 28 A13       |  4 A12  |
| 13 DQ0  |         | 29 A14       |         |
+--------------------------------------------+

        TSOP32 Type1 8x20
         +-------------+
     A11 | 1 []      32| *OE
      A9 | 2         31| A10
      A8 | 3         30| *CE
     A13 | 4         29| O7
     A14 | 5         28| O6
     A17 | 6         27| O5
     A18 | 7         26| O4
     Vcc | 8         25| O3
     Vpp | 9         24| GND
     A16 |10         23| O2
     A15 |11         22| O1
     A12 |12         21| O0
      A7 |13         20| A0
      A6 |14         19| A1
      A5 |15         18| A2
      A4 |16         17| A3
         +-------------+

External links

EPROM page on wikipedia

Files

• 
  AM27C040 Datasheet
• 
  AT27C040 Datasheet
• 
  CY27C040 Datasheet
• 
  EM27C040 Datasheet
• 
  FM27C040 Datasheet
• 
  HT27C040 Datasheet
• 
  INTEL 27C040 Datasheet
• 
  NM27C040 Datasheet
• 
  NXP27C040 Datasheet
• 
  SMJ27C040 ASI Datasheet
• 
  SMJ27C040 Micross Datasheet
• 
  SMJ27C040 TEXAS Datasheet