Datasheet > CY7C265_06

CY7C265_06

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		可编程只读存储器
页数	文件大小	规格书
13页	456K
描述
8K x 8 Registered PROM

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CY7C265_06 数据手册

CY7C265

8K x 8 Registered PROM

are enabled. One pin on the CY7C265 is programmed to

perform either the enable or the initialize function.

Features

• CMOS for optimum speed/power

• High speed (Commercial)

If the asynchronous enable (E) is being used, the outputs may

be disabled at any time by switching the enable to a logic

HIGH, and may be returned to the active state by switching the

enable to a logic LOW.

— 15 ns address set-up

— 12 ns clock to output

If the synchronous enable (E_S) is being used, the outputs will

go to the OFF or high-impedance state upon the next positive

clock edge after the synchronous enable input is switched to

a HIGH level. If the synchronous enable pin is switched to a

logic LOW, the subsequent positive clock edge will return the

output to the active state. Following a positive clock edge, the

address and synchronous enable inputs are free to change

since no change in the output will occur until the next

LOW-to-HIGH transition of the clock. This unique feature al-

lows the CY7C265 decoders and sense amplifiers to access

the next location while previously addressed data remains sta-

ble on the outputs.

• Low power

— 660 mW (Commercial)

• On-chip edge-triggered registers

— Ideal for pipelined microprogrammed systems

• EPROM technology

— 100% programmable

— Reprogrammable (CY7C265W)

• 5V ±10% V_CC, commercial and military

• Capable of withstanding >2001V static discharge

• Slim 28-pin, 300-mil plastic or hermetic DIP

If the E/I pin is used for INIT (asynchronous), then the outputs

are permanently enabled. The initialize function is useful

during power-up and time-out sequences, and can facilitate

implementation of other sophisticated functions such as a

built-in “jump start” address. When activated, the initialize

control input causes the contents of a user programmed

8193rd 8-bit word to be loaded into the on-chip register. Each

bit is programmable and the initialize function can be used to

load any desired combination of 1’s and 0’s into the register.

In the unprogrammed state, activating INIT will generate a

word are programmed to be a 1, activating INIT performs a

Functional Description

The CY7C265 is a 8192 x 8 registered PROM. It is organized

as 8,192 words by 8 bits wide, and has a pipeline output

initialize byte that may be loaded into the pipeline register with

the initialize signal. The programmable initialize byte is the

8,193rd byte in the PROM and its value is programmed at the

time of use.

Packaged in 28 pins, the PROM has 13 address signals (A₀

through A₁₂), 8 data out signals (O₀through O₇), E/I (enable

or initialize), and CLOCK.

Applying a LOW to the INIT input causes an immediate load

of the programmed initialize word into the pipeline register and

onto the outputs. The INIT LOW disables clock and must

return HIGH to enable clock independent of all other inputs,

including the clock.

CLOCK functions as a pipeline clock, loading the contents of

the addressed memory location into the pipeline register on

each rising edge. The data will appear on the outputs if they

Cypress Semiconductor Corporation

Document #: 38-04012 Rev. *B

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised August 17, 2006

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与CY7C265_06相关器件

型号	品牌	获取价格	描述	数据表
CY7C265-15DC	ETC	获取价格	x8 EPROM
CY7C265-15DMB	CYPRESS	获取价格	OTP ROM, 8KX8, 12ns, CMOS, CDIP28, 0.300 INCH, SLIM, HERMETIC SEALED, CERDIP-28
CY7C265-15JC	CYPRESS	获取价格	8K x 8 Registered PROM
CY7C265-15JCR	CYPRESS	获取价格	OTP ROM, 8KX8, 12ns, CMOS, PQCC28, PLASTIC, LCC-28
CY7C265-15JCT	CYPRESS	获取价格	OTP ROM, 8KX8, 12ns, CMOS, PQCC28, PLASTIC, LCC-28
CY7C265-15JI	CYPRESS	获取价格	OTP ROM, 8KX8, 12ns, CMOS, PQCC28, PLASTIC, LCC-28
CY7C265-15JIR	CYPRESS	获取价格	OTP ROM, 8KX8, 12ns, CMOS, PQCC28, PLASTIC, LCC-28
CY7C265-15LC	ETC	获取价格	x8 EPROM
CY7C265-15LMB	ETC	获取价格	x8 EPROM
CY7C265-15PC	CYPRESS	获取价格	OTP ROM, 8KX8, 12ns, CMOS, PDIP28, 0.300 INCH, SLIM, PLASTIC, DIP-28

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