27020

Cross-Reference

BRAND	TAG	NUMBER	PIN COUNT	MARKINGS
AMD	Am	27C020	DIP32 LCC32	Am27C020
AMD	Am	27LV020	DIP32 LCC32 TSOP32	Am27LV020 Am27LV020B
Amic	A	27020	DIP32	A27020
Amic	A	278308	DIP32 LCC32	A278308 A278308A
Atmel	AT	27BV020	DIP32 LCC32 TSOP32 VSOP32	AT27BV020
Atmel	AT	27C020	DIP32 LCC32 TSOP32	AT27C020
Atmel	AT	27LV020	DIP32 LCC32 TSOP32 VSOP32	AT27LV020 At27LV020A
Bosh	B	58517	DIP32	B58517
Cypres	CY	27C020	DIP32 LCC32 TSOP32	CY27C020
Eon Silicon	EN	27C020	DIP32 LCC32 TSOP32	EN27C020
Eon Silicon	EN	27LV020	DIP32 LCC32 TSOP32	EN27LV020 EN27LV020B
Exodus Microel.	EM	27C020	DIP32	EM27C020
Fairchild	FM	27C020	DIP32 LCC32	FM27C020
Fairchild	NM	27C020	DIP32 LCC32	NM27C020
Fujitsu	MBM	27C2000	DIP32	MBM27C2000
Holtek	HT	27C020	DIP32 LCC32 SOIC32	HT27C020
Holtek	HT	27LC020	DIP32 LCC32 SOIC32 TSOP32	HT27LC020
Intel	D/I	27C020	DIP32 LCC32	i27C020 D27C020 L27C020 LD27C020 M27C020 MD27C020 P27C020 Q27C020 QD27C020 T27C020 TD27C020
Intel	N	27C020	LCC32	N27C020
ISSI	IS	27C020	DIP32 LCC32 TSOP	IS27C020
ISSI	IS	27HC020	DIP32 LCC32 TSOP32	IS27LV020
ISSI	IS	27LV020	DIP32 LCC32 TSOP32	IS27LV020
Macronix	MX	27C2000	DIP32 LCC32 SOIC32 TSOP32	MX27C2000 MX27C4000A
Macronix	MX	27L2000	DIP32 LCC32 SOIC32 TSOP32	MX27L2000
Mitsubishi	M5M	27C201	DIP32 LCC32 SOIS32 TSOP40	M5M27C201
National	NM	27C020	DIP32 LCC32	NM27C020 NMC27C020
Nec	uPD	27C2001	DIP32 SOIC32	uPD27C2001
Oki	MSM	272000	DIP32	MSM272000
Oki	MSM	27C2000	DIP32	MSM27C2000 MSM27C2000ZB
Oki	MR	27V401	DIP32 SOIC32 TSOP32	MR27V401 MR27V401D MR27V401E
Oki	MSM	27C401	DIP32 SOIC32 TSOP32	MSM27C401 MSM27C401CZ MSM27C401AZB
Philips	NXP	27C040	DIP32	NXP27C040
Rohm Semi	ZR	040	DIP32	ZR040P
Signetics	S	27C040	DIP32	S27C040
Sony	CXK	27C4001	DIP32	CXK27C4001
ST Microelectronics	M	27V401	DIP32 LCC32 TSOP32	M27V401
ST Microelectronics	M	27W401	DIP32 LCC32 TSOP32	M27W401
ST Microelectronics	M	27C405	DIP32 LCC32 TSOP32	M27C405
ST Microelectronics	M	27V405	DIP32 LCC32 TSOP32	M27V405
ST Microelectronics	M	23C4001	DIP32	M23C4001
ST Microelectronics	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	544001	DIP32	TC544001
Toshiba	TC	574000	DIP32	TC574000 TC574000A
Winbond	W	27C040	DIP32 LCC32 SOIC32 TSOP32	W27C040
Winbond	W	27E040	DIP32 LCC32	W27E040
WSI	WS	27C040	DIP32	WS27C040L
WSI	WS	57C040	DIP32 LCC32	WS57C040F
unknown	OT	27C020	DIP32 LCC32	OT27C020

EPROM 27020 & 27C020

Size

bit	Byte	Hex organization
2Mb	256KB (262.144 byte)	40000hex8

Pinout

       DIP32-600mil
      SOIC32-450mil
         +--\/--+
     Vpp |1   32| Vcc
     A16 |2   31| *PGM
     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
     A2  |10  23| A10
     A1  |11  22| *CE
     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

• 
  A279308 Datasheet
• 
  AM27C040 Datasheet
• 
  AT27BV040 Datasheet
• 
  AT27C040 Datasheet
• 
  AT27LV040 Datasheet
• 
  CY27C040 Datasheet
• 
  EM27C040 Datasheet
• 
  FM27C040 Datasheet
• 
  HT27C040 Datasheet
• 
  INTEL 27C040 Datasheet
• 
  M27C405 Datasheet
• 
  M27C4001 Datasheet
• 
  M27V401 Datasheet
• 
  M27w401 Datasheet
• 
  MBM27C4001 Datasheet
• 
  MR27v401 Datasheet
• 
  MSM27c401 Datasheet
• 
  MX27C4000 Datasheet
• 
  NM27C040 Datasheet
• 
  NXP27C040 Datasheet
• 
  SMJ27C040 ASI Datasheet
• 
  SMJ27C040 Micross Datasheet
• 
  SMJ27C040 TEXAS Datasheet
• 
  TMS27C040 Datasheet
• 
  uPD27C4001 Datasheet
• 
  W27E040 Datasheet