LFSC datasheet(63/237 Pages) LATTICE

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3-19

DC and Switching Characteristics

Lattice Semiconductor

LatticeSC/M Family Data Sheet

Input Delay Block/AIL Timing

GSR Timing

Internal System Bus Timing

Parameter

Description

Min.

Typ.

Max.

Units

tFDEL

Fine delay time

tCDEL

Coarse delay time

1120

1440

2560

jtAIL

AIL jitter tolerance

1- ((N

1 * tFDEL) / (Clock Period))

1. N = number of ﬁne delays used in a particular AIL setting

Parameter

Description

VCC

-7

-6

-5

Units

Min.

Max.

Min.

Max.

Min.

Max.

tSYNC_GSR_MAX

Maximum operating frequency for

synchronous GSR

1.14V

—

438

—

417

—

398

MHz

0.95V

—

378

—

355

—

337

MHz

tASYNC_GSR_MPW

Minimum pulse width of

asynchronous input

—————

3.3

—

Note: Synchronous GSR goes out of reset in two cycles from the clock edge where the setup time of the FF was met.

Parameter

Description

-7

-6

-5

Units

Min.

Max.

Min.

Max.

Min.

Max.

tHCLK

Maximum operating frequency for internal

system bus HCLK.

—

200

—

200

—

200

MHz

Note: There is no minimum frequency. If HCLK is sourced from the embedded oscillator, the minimum frequency limitation of the oscillator/

divider is about 0.3 MHz. Refer to the osciallator data for missing conﬁguration modes.

LFSC Datasheet(PDF) 63 Page - Lattice Semiconductor

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