Specification	AT27C040-90JU-T

Access Time	90 ns
Memory Depth	512 K
Memory Format	EPROM
Memory Interface (Type)	Parallel
Memory Size	4 Mbit
Memory Type	Non-Volatile
Memory Width	8 bit
Mounting Type	Surface Mount
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Package / Case	32-LCC (J-Lead)
Package Length	0.45 in
Package Name	32-PLCC
Package Width	13.97 mm
Technology	EPROM - OTP
Voltage - Supply (Maximum)	5.5 V
Voltage - Supply (Minimum)	4.5 V

AT27C040 Series

Part	Memory Width	Memory Depth	Package Name	Access Time	Memory Size	Operating Temperature (Min)	Operating Temperature (Max)	Memory Interface (Type)	Technology	Memory Type	Mounting Type	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Memory Format	Package Width	Package Length	Package / Case
Microchip Technology AT27C040-70TI	8 bit	512 K	32-TFSOP 32-TSOP	70 ns	4 Mbit	-40 °C	85 °C	Parallel	EPROM - OTP	Non-Volatile	Surface Mount	5.5 V	4.5 V	EPROM	18.4 mm	0.724 "
Microchip Technology AT27C040-12RC	8 bit	512 K	32-SOIC	120 ns	4 Mbit	0 °C	70 °C	Parallel	EPROM - OTP	Non-Volatile	Surface Mount	5.5 V	4.5 V	EPROM	11.3 mm	0.445 in
Microchip Technology AT27C040-90JC	8 bit	512 K	32-PLCC	90 ns	4 Mbit	0 °C	70 °C	Parallel	EPROM - OTP	Non-Volatile	Surface Mount	5.5 V	4.5 V	EPROM	11.43 mm	13.97 mm	32-LCC (J-Lead)
Microchip Technology AT27C040-70PC	8 bit	512 K	32-DIP 32-PDIP	70 ns	4 Mbit	0 °C	70 °C	Parallel	EPROM - OTP	Non-Volatile	Through Hole	5.5 V	4.5 V	EPROM	15.24 mm	0.6 in
Microchip Technology AT27C040-70JI	8 bit	512 K	32-PLCC	70 ns	4 Mbit	-40 °C	85 °C	Parallel	EPROM - OTP	Non-Volatile	Surface Mount	5.5 V	4.5 V	EPROM	11.43 mm	13.97 mm	32-LCC (J-Lead)
Microchip Technology AT27C040-12RI	8 bit	512 K	32-SOIC	120 ns	4 Mbit	-40 °C	85 °C	Parallel	EPROM - OTP	Non-Volatile	Surface Mount	5.5 V	4.5 V	EPROM	11.3 mm	0.445 in
Microchip Technology AT27C040-15JI	8 bit	512 K	32-PLCC	150 ns	4 Mbit	-40 °C	85 °C	Parallel	EPROM - OTP	Non-Volatile	Surface Mount	5.5 V	4.5 V	EPROM	11.43 mm	13.97 mm	32-LCC (J-Lead)
Microchip Technology AT27C040-70JC	8 bit	512 K	32-PLCC	70 ns	4 Mbit	0 °C	70 °C	Parallel	EPROM - OTP	Non-Volatile	Surface Mount	5.5 V	4.5 V	EPROM	11.43 mm	13.97 mm	32-LCC (J-Lead)
Microchip Technology AT27C040-90JU-T	8 bit	512 K	32-PLCC	90 ns	4 Mbit	-40 °C	85 °C	Parallel	EPROM - OTP	Non-Volatile	Surface Mount	5.5 V	4.5 V	EPROM	13.97 mm	0.45 in	32-LCC (J-Lead)
Microchip Technology AT27C040-15RC	8 bit	512 K	32-SOIC	150 ns	4 Mbit	0 °C	70 °C	Parallel	EPROM - OTP	Non-Volatile	Surface Mount	5.5 V	4.5 V	EPROM	11.3 mm	0.445 in

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CAD

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Documents

Technical documentation and resources

AT27C040-90JU-T | Datasheet

AT27C040 - Complete Datasheet

EPROM Programmer Firmware Support

Support for Third Party Memory Devices Programmer Sources

EPROM Production Program Troubleshooting Checklist

The Benefits of the RAPID Programming Algorithm

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