ST & T UPSD3212C User Manual

Page 148

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Table 127. CPLD Macrocell Asynchronous Clock Mode Timing (5V Devices)

Table 128. CPLD Macrocell Asynchronous Clock Mode Timing (3V Devices)

Symbol

Parameter

Conditions

Min

Max

PT

Aloc

Turbo

Off

Slew

Rate

Unit

f

MAXA

Maximum Frequency
External Feedback

1/(t

SA

+t

COA

)

38.4

MHz

Maximum Frequency
Internal Feedback (f

CNTA

)

1/(t

SA

+t

COA

–10)

62.5

MHz

Maximum Frequency
Pipelined Data

1/(t

CHA

+t

CLA

)

71.4

MHz

t

SA

Input Setup Time

7

+ 2

+ 10

ns

t

HA

Input Hold Time

8

ns

t

CHA

Clock Input High Time

9

+ 10

ns

t

CLA

Clock Input Low Time

9

+ 10

ns

t

COA

Clock to Output Delay

21

+ 10

– 2

ns

t

ARDA

CPLD Array Delay

Any macrocell

11

+ 2

ns

t

MINA

Minimum Clock Period

1/f

CNTA

16

ns

Symbol

Parameter

Conditions

Min

Max

PT

Aloc

Turbo

Off

Slew
Rate

Unit

f

MAXA

Maximum Frequency
External Feedback

1/(t

SA

+t

COA

)

21.7

MHz

Maximum Frequency
Internal Feedback (f

CNTA

)

1/(t

SA

+t

COA

–10)

27.8

MHz

Maximum Frequency
Pipelined Data

1/(t

CHA

+t

CLA

)

33.3

MHz

t

SA

Input Setup Time

10

+ 4

+ 20

ns

t

HA

Input Hold Time

12

ns

t

CHA

Clock High Time

17

+ 20

ns

t

CLA

Clock Low Time

13

+ 20

ns

t

COA

Clock to Output Delay

36

+ 20

– 6

ns

t

ARD

CPLD Array Delay

Any macrocell

25

+ 4

ns

t

MINA

Minimum Clock Period

1/f

CNTA

36

ns

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