Electrical Specifications
5.8.4 I/O Write
Table 5−13 assumes testing over recommended operating conditions, IOSTRB = 0, and H = 0.5t
(see
c(CO)
Figure 5−9).
Table 5−13. I/O Write Switching Characteristics
PARAMETER
MIN
− 1
MAX
UNIT
For accesses not immediately following a
HOLD operation
4
6
ns
ns
ns
ns
Delay time, CLKOUT low to address
t
d(CLKL-A)
†
valid
For read accesses immediately following a
HOLD operation
− 1
For accesses not immediately following a
HOLD operation
2H − 3
Setup time, address valid before IOSTRB
t
su(A)IOSL
†
low
For read accesses immediately following a
HOLD operation
2H − 5
− 1
t
Delay time, CLKOUT low to write data valid
Setup time, data valid before IOSTRB high
Hold time, data valid after IOSTRB high
Delay time, CLKOUT low to IOSTRB low
Pulse duration, IOSTRB low
4
ns
ns
ns
ns
ns
ns
d(CLKL-D)W
t
2H − 5 2H + 6
2H − 5 2H + 6
su(D)IOSH
t
h(D)IOSH
t
t
t
− 1
2H − 2
0
4
d(CLKL-IOSL)
w(SL)IOS
Delay time, CLKOUT low to IOSTRB high
4
d(CLKL-IOSH)
†
Address R/W, PS, DS, and IS timings are included in timings referenced as address.
CLKOUT
t
d(CLKL-A)
†
A[22:0]
t
d(CLKL-D)W
t
d(CLKL-D)W
t
su(A)IOSL
D[15:0]
t
su(D)IOSH
t
d(CLKL-IOSH)
t
h(D)IOSH
t
d(CLKL-IOSL)
IOSTRB
t
w(SL)IOS
†
R/W
†
IS
†
Address, R/W, PS, DS, and IS timings are all included in timings referenced as address.
Figure 5−9. Parallel I/O Port Write (IOSTRB = 0)
83
November 2001 − Revised April 2004
SPRS007D
TI [ TEXAS INSTRUMENTS ]
