Figure 75. synchronous clock mode timing – pld – ST & T UPSD3212C User Manual

Page 146

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Figure 75. Synchronous Clock Mode Timing – PLD

Table 125. CPLD Macrocell Synchronous Clock Mode Timing (5V Devices)

Note: 1. Fast Slew Rate output available on PA3-PA0, PB3-PB0, and PD2-PD1. Decrement times by given amount.

2. CLKIN (PD1) t

CLCL

= t

CH

+ t

CL

.

Symbol

Parameter

Conditions

Min

Max

PT

Aloc

Turbo

Off

Slew

rate

(1)

Unit

f

MAX

Maximum Frequency
External Feedback

1/(t

S

+t

CO

)

40.0

MHz

Maximum Frequency
Internal Feedback (f

CNT

)

1/(t

S

+t

CO

–10)

66.6

MHz

Maximum Frequency
Pipelined Data

1/(t

CH

+t

CL

)

83.3

MHz

t

S

Input Setup Time

12

+ 2

+ 10

ns

t

H

Input Hold Time

0

ns

t

CH

Clock High Time

Clock Input

6

ns

t

CL

Clock Low Time

Clock Input

6

ns

t

CO

Clock to Output Delay

Clock Input

13

– 2

ns

t

ARD

CPLD Array Delay

Any

macrocell

11

+ 2

ns

t

MIN

Minimum Clock Period

(2)

t

CH

+t

CL

12

ns

tCH

tCL

tCO

tH

tS

CLKIN

INPUT

REGISTERED

OUTPUT

AI02860

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