2764

Cross-Reference

BRAND	TAG	NUMBER	PIN COUNT	MARKINGS
AMD	Am	2764 9764	DIP28	Am2764 Am2764HV Am9764
AMD	Am	2764A	DIP28 LCC32	Am2764A
AMD	Am	27C64	DIP28 LCC32	Am27C64 Am27C64L
AMD	DS	41300	DIP28	DS41300
AKM Asahi Kansei	AK	27CX641 27CX642	DIP28	AK27CX641 AK27CX642
Atmel	AT	27C64 27HC64	DIP28 LCC32	AT27C64 AT27HC64 AT27HC64L
Atmel	AT	27HC641 27HC642	DIP28	AT27HC641 AT27HC641R AT27HC642 AT27HC642R
Bosh	B	57120	DIP28	B57120
Bosh	B	57347	DIP28	B7347
Bosh	B	57477	DIP28	B57477
Bosh	B	57519	DIP28	B57519
Bosh	B	57618	DIP28	B57618
Bosh	B	57625	DIP28	B57625
Catalyst	CAT	2764 2764A	DIP28	CAT2764 CAT2764A
Cypress	CY	7C261	DIP28 LCC28	CY7C261
Cypress	CY	7C263	DIP28 LCC28	CY7C263
Cypress	CY	7C264	DIP28 LCC28	CY7C264
Cypress	CY	7C265	DIP28 LCC28	CY7C265
Cypress	CY	7C266	DIP28 LCC32	CY7C266
Exodus Microel.	EM	27C64	DIP28 LCC32	EM27C64
Fairchild	NM	27LC64	DIP28	NM27LC64
Fairchild	NMC	27C64	DIP28	NMC27C64
Fujitsu	MBM	2764	DIP28	MBM2764
Fujitsu	MBM	27C64	DIP28	MBM27C64
General Instr.		27C64	DIP28	27C64
General Instr.		27HC64	DIP28	27HC64 27HC64L
General Instr.		27HC641	DIP28	27HC641
Greenwich Instr.	GR	2764	DIP28	GR2764
Hitachi	HN	462764	DIP28	HN462764 HN462764G
Hitachi	HN	482764	DIP28	HN482764 HN482764G HN482764P
Hitachi	HN	2764	DIP28	HN2764 HN2764A HN2764G
Hitachi	HN	27C64	DIP28 SOP28	HN27C64 HN27C64G HN27C64FP
Hynix	HY	2764 27C64	DIP28	HY2764 HY27C64 HY27C64A
Hyundai	HY	2764 27C64	DIP28	HY2764 HY27C64 HY27C64A
ICT	ICT	27CX641 27CX642	DIP28	ICT27CX641 27CX641 ICT27CX642 27CX642
Intel	D/I	2764	DIP28	i2764 i2764A D2764 D2764A LD2764A MD2764 MD2764A P2764 P2764A QD2764 QD2764A TD2764 TD2764A
Intel	D/I	27C64	DIP28 LCC32	i27C64 AD27C64 AN27C64 AP27C64 D27C64 L27C64 LD27C64 MD27C64 N27C64 P27C64 QD27C64 TP27C64 TN27C64 27C64A
Intel	D/I	87C64	DIP28	i87C64 AD87C64 AP87C64 D87C64 P87C64 LD87C64 QD87C64 TD87C64 TP87C64
Macronix	MX	27C64	DIP28	MX27C64
Matsushita		2764	DIP28	2764
Microchip		27C64	DIP28 LCC32 SOIC28	27C64 27C64A
Microchip		27HC64	DIP28 LCC32 SOIC28	27HC64 27HC64A
Microchip		27LV64	DIP28 LCC32 SOIC28 TSOP28	27LV64
Mitsubishi	M5L	2764	DIP28	M5L2764
Mostek	MK	2764	DIP28	MK2764
Mostek	MK	36000	DIP28	MK36000
Motorola	MCM	68764 68766	DIP28	MCM68764 MCM68766C
National	NM	27LC64	DIP28	NM27LC64
National	NMC	27C64	DIP28	NMC27C64
Nec	uPD	2364	DIP28	uPD2364 uPD2364A
Nec	uPD	2764	DIP28	uPD2764
Nec	uPD	27C64	DIP28	uPD27C64 uPD27C64A
NTE	NTE	2764	DIP28	NTE2764
Oki	MSM	2764	DIP28	MSM2764 MSM2764A MSM2764AS MSM2764ZB MSM2764RS
Oki	MSM	27C64	DIP28	MSM27C64 MSM27C64AS
Panatech	RD	27C64	DIP28	RD27C64
Philips	NXP	27C64 27C641	DIP28	27C64 NXP27C64 27C641
Quick Pulse	QP	2764	DIP28	QP2764 QP2764A
Quick Pulse	QP	27C64	DIP28 LCC32	QP27C64
Richo	RD	27C64	DIP28 LCC32	RD27C64
Rockwell	R	2764 27C64	DIP28	R2764 R2764C R2764P R27C64
Rockwell	R	8764 87C64	DIP28	R8764 R87C64
SEEQ	DQ	82005	DIP28	DQ82005
SEEQ	DQ	2764	DIP28	DQ2764
ST Microelectronics	M	2764	DIP28	M2764 M2764A
ST Microelectronics	M	27C64	DIP28 LCC32	M27C64 M27C64A
ST Microelectronics	M	27HC641	DIP28	M27HC641
ST Microelectronics	ST	2764	DIP28	ST2764 ST2764A
ST Microelectronics	TS	2764	DIP28	TS2764 TS2764A
ST Microelectronics	TS	27C64	DIP28 LCC32	TS27C64 TS27C64A
Signetics	S	27C64	DIP28	S27C64 S27C64A
Signetics	S	27C641	DIP28	S27C641
Sharp	LH	5764	DIP28 SOIC28	LH5764
SMOS	SPM	27C64	DIP28	SPM27C64 SPM27C64H
Texas Instr.	SMJ	2764 27C64	DIP28	SMJ2764 SMJ27C64
Texas Instr.	TMS	2564	DIP28	TMS2564
Texas Instr.	TMS	2764	DIP28	TMS2764
Texas Instr.	TMS	27C64	DIP28	TMS27C64
Texas Instr.	TMS	27P64	DIP28	TMS27P64
Texas Instr.	TMS	27PC64	DIP28	TMS27PC64
Toshiba	TMM	2464	DIP28 SOIC28	TMM2464 TMM2464A
Toshiba	TMM	2764	DIP28	TMM2764 TMM2764A
VLSI	VT	27C64	DIP28	VT27C64
WSI	WS	27C64	DIP28 LCC32	WS27C64F WS27C64L
WSI	WS	57C49	DIP28 LCC28 LCC32	WS57C49 WS57C49B WS57C49C WS57C49F
USSR	K	573RF4	DIP28	K573RF4 K573RF4A K573RF4B K573RF43 K573RF44
USSR	K	573RF6	DIP28	K573RF6 K573RF6A K573RF6B
USSR	K	1626RF	DIP28	K1626RF1 K1626RF2

EPROM 2764 & 27C64

Size

bit	Byte	Hex organization
64Kb	8KB (8.192 byte)	2000hex8

Pinout

all types, excluding TMS2564
       DIP28-600mil
      SOIC28-330mil
         +--\/--+
     Vpp |1   28| Vcc
     A12 |2   27| *PGM
     A7  |3   26| NC
     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| O7
     O0  |11  18| O6
     O1  |12  17| O5
     O2  |13  16| O4
     GND |14  15| O3
         +------+

    -- ONLY TMS2564 --
       DIP28-600mil
         +--\/--+
     Vpp |1   28| Vcc
    *CS1 |2   27| *CS2
     A7  |3   26| Vcc
     A6  |4   25| A8
     A5  |5   24| A9
     A4  |6   23| A12
     A3  |7   22| PD/*PGM
     A2  |8   21| A10
     A1  |9   20| A11
     A0  |10  19| O7
     O0  |11  18| O6
     O1  |12  17| O5
     O2  |13  16| O4
     GND |14  15| O3
         +------+


    LCC28-450x450mil
+----------------------------------------+
|  5 A4   | 12 01   | 19 O6   | 26 A9    |
|  6 A3   | 13 02   | 20 O7   | 27 A8    |
|  7 A2   | 14 GND  | 21 NC   | 28 Vcc   |
|  8 A1   | 15 NC   | 22 A12  |  1 NC    |
|  9 A0   | 16 O3   | 23 A11  |  2 A7    |
| 10 NC   | 17 O4   | 24 *CS  |  3 A6    |
| 11 O0   | 18 O5   | 25 A10  |  4 A5    |
+----------------------------------------+


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

External links

EPROM page on wikipedia

Files

• 

  AM27C64 Datasheet

• 

  CY7C26X Datasheet