Datasheet > AT28C256E-15JU-T

AT28C256E-15JU-T

更新时间： 2024-11-07 03:17:27

品牌	Logo	应用领域
美国微芯 - MICROCHIP		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
25页	659K
描述
IC EEPROM 256KBIT 150NS 32PLCC

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中文翻译

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数据手册

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AT28C256E-15JU-T 数据手册

Features

• Fast Read Access Time – 150 ns

• Automatic Page Write Operation

– Internal Address and Data Latches for 64 Bytes

– Internal Control Timer

• Fast Write Cycle Times

– Page Write Cycle Time: 3 ms or 10 ms Maximum

– 1 to 64-byte Page Write Operation

• Low Power Dissipation

256K (32K x 8)

Paged Parallel

EEPROM

– 50 mA Active Current

– 200 µA CMOS Standby Current

• Hardware and Software Data Protection

• DATA Polling for End of Write Detection

• High Reliability CMOS Technology

– Endurance: 10⁴or 10⁵Cycles

– Data Retention: 10 Years

AT28C256

• Single 5V ± 10% Supply

• CMOS and TTL Compatible Inputs and Outputs

• JEDEC Approved Byte-wide Pinout

• Full Military and Industrial Temperature Ranges

• Green (Pb/Halide-free) Packaging Option

1. Description

The AT28C256 is a high-performance electrically erasable and programmable read-

only memory. Its 256K of memory is organized as 32,768 words by 8 bits. Manufac-

tured with Atmel’s advanced nonvolatile CMOS technology, the device offers access

times to 150 ns with power dissipation of just 440 mW. When the device is deselected,

the CMOS standby current is less than 200 µA.

The AT28C256 is accessed like a Static RAM for the read or write cycle without the

need for external components. The device contains a 64-byte page register to allow

writing of up to 64 bytes simultaneously. During a write cycle, the addresses and 1 to

64 bytes of data are internally latched, freeing the address and data bus for other

operations. Following the initiation of a write cycle, the device will automatically write

the latched data using an internal control timer. The end of a write cycle can be

detected by DATA Polling of I/O7. Once the end of a write cycle has been detected a

new access for a read or write can begin.

Atmel’s AT28C256 has additional features to ensure high quality and manufacturabil-

ity. The device utilizes internal error correction for extended endurance and improved

data retention characteristics. An optional software data protection mechanism is

available to guard against inadvertent writes. The device also includes an extra

64 bytes of EEPROM for device identification or tracking.

0006M–PEEPR–12/09

12 3 4 5 6 7...25

中文翻译

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与AT28C256E-15JU-T相关器件

型号	品牌	获取价格	描述	数据表
AT28C256E-15LC	ETC	获取价格	x8 EEPROM
AT28C256E-15LI	ETC	获取价格	x8 EEPROM
AT28C256E-15LM	ETC	获取价格	x8 EEPROM
AT28C256E-15LM/883	ATMEL	获取价格	256K 32K x 8 Paged CMOS E2PROM
AT28C256E-15PC	ATMEL	获取价格	256K 32K x 8 Paged CMOS E2PROM
AT28C256E-15PI	ATMEL	获取价格	256K 32K x 8 Paged CMOS E2PROM
AT28C256E-15PL	ATMEL	获取价格	暂无描述
AT28C256E-15PU	ATMEL	获取价格	256K (32K x 8) Paged Parallel EEPROM
AT28C256E-15SC	ATMEL	获取价格	256K 32K x 8 Paged CMOS E2PROM
AT28C256E-15SCT/R	ATMEL	获取价格	EEPROM, 32KX8, 150ns, Parallel, CMOS, PDSO28, 0.300 INCH, PLASTIC, SOIC-28

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