TMS320UC5405 datasheet(53/77 Pages) TI

53 / 77 page

Electrical Specifications

October 2002 − Revised October 2004

SPRS199B

6.6.4 I/O Write

Table 6−10 assumes testing over recommended operating conditions, IOSTRB = 0, and H = 0.5tc(CO) (see

Figure 6−8).

Table 6−10. I/O Write Switching Characteristics

PARAMETER

MIN

MAX

UNIT

td(CLKL-A)

Delay time, CLKOUT low to address valid†

td(CLKH-ISTRBL)

Delay time, CLKOUT high to IOSTRB low

−2

td(CLKH-D)IOW

Delay time, CLKOUT high to write data valid

H−5

H+14

td(CLKH-ISTRBH)

Delay time, CLKOUT high to IOSTRB high

−2

td(CLKL-RWL)

Delay time, CLKOUT low to R/W low

td(CLKL-RWH)

Delay time, CLKOUT low to R/W high

th(A)IOW

Hold time, address valid after CLKOUT low†

th(D)IOW

Hold time, write data after IOSTRB high

H−3

H+11

tsu(D)IOSTRBH

Setup time, write data before IOSTRB high

H−11

H+1

tsu(A)IOSTRBL

Setup time, address valid before IOSTRB low†

H−2

H+2

† Address and IS timings are included in timings referenced as address.

R/W

IOSTRB

D[15:0]

A[5:0]

CLKOUT

td(CLKH-ISTRBH)

th(A)IOW

th(D)IOW

td(CLKH-D)IOW

td(CLKH-ISTRBL)

td(CLKL-A)

td(CLKL-RWL)

td(CLKL-RWH)

tsu(A)IOSTRBL

tsu(D)IOSTRBH

Figure 6−8. Parallel I/O Port Write

TMS320UC5405 Datasheet(PDF) 53 Page - Texas Instruments

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