27040

Cross-Reference

BRAND	TAG	NUMBER	PIN COUNT	MARKINGS
AMD	Am	27C040	DIP32 LCC32	Am27C040
Amic	A	279308	DIP32 LCC32 TSOP32	A279308
ASI	SMJ	27C040	DIP32	SMJ27C040
Atmel	AT	27C040	DIP32 LCC32 SOIC32 TSOP32	AT27C040
Atmel	AT	27BV040	DIP32 LCC32 SOIC32 TSOP32 TSOP32	AT27BV040
Atmel	AT	27BV040	DIP32 LCC32 TSOP32 TSOP32	AT27LV040 AT27LV040A
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
Fairchild	NM	27P040	DIP32 LCC32	NM27P040
Fujitsu	MBM	27C4001	DIP32	MBM27C4001
Hitachi	HN	27C4001	DIP32 TSOP32	HN27C4001 HN27C4001G
Holtek	HT	27C040	DIP32 LCC32 SOIC32	HT27C040
Holtek	HT	27LC040	DIP32 LCC32 SOIC32 TSOP32	HT27LC040
Intel	D/I	27C040	DIP32 LCC32	i27C040 D27C040
Intel	MD	27C040	DIP32	MD27C040
Intel	N	27C040	LCC32	N27C040
Macronix	MX	27C4000	DIP32 LCC32 SOIC32 TSOP32	MX27C4000 MX27C4000A
Macronix	MX	27L4000	DIP32 LCC32 SOIC32 TSOP32	MX27L4000
Mitsubishi	M5M	27401A	DIP32 SOP32 TSOP40	M5M27401A
Mitsubishi	M5M	27C401	DIP32 LCC32	M5M27C401 M5M27C401A
Micross	SMJ	27C040	DIP32	SMJ27C040
National	NM	27C040	DIP32 LCC32	NM27C040 NM27C040Q
Nec	uPD	27C4001	DIP32	uPD27C4001
Oki	MR	27V401	DIP32 SOIC32 TSOP32	MR27V401 MR27V401D MR27V401E
Oki	MSM	27C401	DIP32 SOIC32 TSOP32	MSM27C401 MSM27C401CZ MSM27C401AZB
Philips	NXP	27C040	DIP32	NXP27C040
Signetics	S	27C040	DIP32	S27C040
Sony	CXK	27C4001	DIP32	CXK27C4001
ST	M	27V401	DIP32 LCC32 TSOP32	M27V401
ST	M	27W401	DIP32 LCC32 TSOP32	M27W401
ST	M	27C405	DIP32 LCC32 TSOP32	M27C405
ST	M	27V405	DIP32 LCC32 TSOP32	M27V405
ST	M	23C4001	DIP32	M23C4001
ST	M	27C4001	DIP32 LCC32 TSOP32	M27C4001
Texas Instr.	SMJ	27C040	DIP32	SMJ27C040
Texas Instr.	TMS	27C040	DIP32 LCC32	TMS27C040 TMS27PC040
Toshiba	TC	544000	DIP32 SOP32	TC544000 TC544000A
Toshiba	TC	574000	DIP32	TC574000 TC574000A
Winbond	W	27C040	DIP32 LCC32 SOIC32 TSOP32	W27C040
WSI	WS	27C040	DIP32	WS27C040L
WSI	WS	57C040	DIP32 LCC32	WS57C040F
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
• 
  TMS27C040 Datasheet