Cypress Semiconductor FX2LP Manual de usuario descargar pdf (Pagina 38)

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Document #: 38-08032 Rev. *K Page 38 of 60

10.2 Program Memory Read

Notes:

17. CLKOUT is shown with positive polarity.

18. t

ACC1

is computed from the above parameters as follows:

ACC1

(24 MHz) = 3*t

– t

DSU

= 106 ns

ACC1

(48 MHz) = 3*t

– t

DSU

= 43 ns.

SOEL

SCSL

PSEN#

D[7..0]

OE#

A[15..0]

CS#

STBL

data in

ACC1

STBH

Figure 10-1. Program Memory Read Timing Diagram

CLKOUT

[17]

[18]

Table 10-1. Program Memory Read Parameters

Parameter Description Min. Typ. Max. Unit Notes

1/CLKOUT Frequency 20.83 ns 48 MHz

41.66 ns 24 MHz

83.2 ns 12 MHz

Delay from Clock to Valid Address 0 10.7 ns

STBL

Clock to PSEN Low 0 8 ns

STBH

Clock to PSEN High 0 8 ns

SOEL

Clock to OE Low 11.1 ns

SCSL

Clock to CS Low 13 ns

DSU

Data Set-up to Clock 9.6 ns

Data Hold Time 0 ns

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 59 60

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Cypress Semiconductor FX2LP Manual de usuario Pagina 38

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