ATV2500BQ-25KC datasheet(9/18 Pages) ATMEL

Part #	ATV2500BQ-25KC

Description	High-Speed High-Density UV Erasable Programmable Logic Device

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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ATV2500B

9

AC Characteristics

Symbol

Parameter

-12

-15

-20

-25

-30

Units

Min

Max

Mi

n

Ma

x

Min

Ma

x

Min

Ma

x

Min

Ma

x

t

PD1

Input to Non-Registered Output

12

15

20

25

30

ns

t

PD2

Feedback to Non-Registered

Output

12

15

20

25

30

ns

t

PD3

Input to Non-Registered

Feedback

8

11

151820

ns

t

PD4

Feedback to Non-Registered

Feedback

8

11

151820

ns

t

EA1

Input to Output Enable

12

15

20

25

30

ns

t

ER1

Input to Output Disable

12

15

20

25

30

ns

t

EA2

Feedback to Output Enable

12

15

20

25

30

ns

t

ER2

Feedback to Output Disable

12

15

20

25

30

ns

t

AW

Asynchronous Reset Width

6

8

12

15

18

ns

t

AP

Asynchronous Reset to

Registered Output

15

18

22

28

30

ns

t

APF

Asynchronous Reset to

Registered Feedback

12

15

19

25

30

ns

Input Test Waveforms and

Measurement Levels

Output Test Load

Preload and Observability of Registered Outputs

The ATV2500Bs registers are provided with circuitry to

allow loading of each register asynchronously with either a

high or a low. This feature will simplify testing since any

state can be forced into the registers to control test

sequencing. A V

IH level on the odd I/O pins will force the

appropriate register high; a V

IL will force it low, independent

of the polarity or other configuration bit settings.

The PRELOAD state is entered by placing an 10.25V to

10.75V signal on SMP lead 42. When the preload clock

SMP lead 23 is pulsed high, the data on the I/O pins is

placed into the 12 registers chosen by the Q select and

even/odd select pins.

Register 2 observability mode is entered by placing an

10.25V to 10.75V signal on pin/lead 2. In this mode, the

contents of the buried register bank will appear on the

associated outputs when the OE control signals are active.

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ATV2500BQ-25KC Datasheet(PDF) 9 Page - ATMEL Corporation

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