Integrated Circuits (ICs)

AT27C256R-12RI

Obsolete

Microchip Technology

IC EPROM 256KBIT PARALLEL 28SOIC

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Integrated Circuits (ICs)

AT27C256R-12RI

Obsolete

Microchip Technology

IC EPROM 256KBIT PARALLEL 28SOIC

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DocumentsDatasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	AT27C256R-12RI

Access Time	120 ns
Memory Format	EPROM
Memory Interface	Parallel
Memory Organization	32K x 8
Memory Size	32 KB
Memory Type	Non-Volatile
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	28-SOIC
Package / Case [custom]	8.69 mm
Package / Case [custom]	0.342 in
Supplier Device Package	28-SOIC
Technology	EPROM - OTP
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

AT27C256R Series

256Kb (32-Kbit x 8) 5V OTP EPROM

Part	Memory Type	Memory Size	Technology	Operating Temperature [Min]	Operating Temperature [Max]	Access Time	Memory Interface	Voltage - Supply [Min]	Voltage - Supply [Max]	Memory Format	Memory Organization	Package / Case	Package / Case	Package / Case	Mounting Type	Supplier Device Package	Supplier Device Package [y]	Supplier Device Package [x]	Package / Case [y]	Package / Case [x]	Package / Case [custom]	Package / Case [custom]
Microchip Technology AT27C256R-55PI	Non-Volatile	32 KB	EPROM - OTP	-40 °C	85 °C	55 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	28-DIP	0.6 in	15.24 mm	Through Hole	28-PDIP
Microchip Technology AT27C256R-70JI	Non-Volatile	32 KB	EPROM - OTP	-40 °C	85 °C	70 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	32-LCC (J-Lead)			Surface Mount	32-PLCC	11.43	13.97
Microchip Technology AT27C256R-45TC	Non-Volatile	32 KB	EPROM - OTP			45 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	28-TSSOP			Surface Mount	28-TSOP			11.8 mm	0.465 "
Microchip Technology AT27C256R-90PC	Non-Volatile	32 KB	EPROM - OTP			90 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	28-DIP	0.6 in	15.24 mm	Through Hole	28-PDIP
Microchip Technology AT27C256R-12RI	Non-Volatile	32 KB	EPROM - OTP	-40 °C	85 °C	120 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	28-SOIC			Surface Mount	28-SOIC					8.69 mm	0.342 in
Microchip Technology AT27C256R-90TI	Non-Volatile	32 KB	EPROM - OTP	-40 °C	85 °C	90 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	28-TSSOP			Surface Mount	28-TSOP			11.8 mm	0.465 "
Microchip Technology AT27C256R-15RC	Non-Volatile	32 KB	EPROM - OTP			150 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	28-SOIC			Surface Mount	28-SOIC					8.69 mm	0.342 in
Microchip Technology AT27C256R-15TI	Non-Volatile	32 KB	EPROM - OTP	-40 °C	85 °C	150 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	28-TSSOP			Surface Mount	28-TSOP			11.8 mm	0.465 "
Microchip Technology AT27C256R-12JC	Non-Volatile	32 KB	EPROM - OTP			120 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	32-LCC (J-Lead)			Surface Mount	32-PLCC	11.43	13.97
Microchip Technology AT27C256R-15PA	Non-Volatile	32 KB	EPROM - OTP	-40 °C	125 °C	150 ns	Parallel	4.5 V	5.5 V	EPROM	32K x 8	28-DIP	0.6 in	15.24 mm	Through Hole	28-PDIP

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Description

General part information

AT27C256R Series

The Microchip AT27C256R is a low-power, high-performance 256-Kbit

One Time Programmable EPROM organized as 32-Kbit x 8. Requiring a single 5V

power supply, in normal read mode operation typical power consumption is only 8

Documents

Technical documentation and resources