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SGUS014H − FEBRUARY 1991 − REVISED JUNE 2004
changing XFx from an input to an output
The following table defines the timing parameter for changing the XFx pin from an input pin to an output pin.
timing parameters of XFx changing from input to output mode (see Figure 19)
320C30-40
MIN MAX
17
320C30-50
MIN MAX
17
†
NO.
UNIT
49
t
Delay time, H3 high to XF switching from input to output
ns
d(H3H-XFIO)
†
The number in this column matches that used in Figure 19.
Execution of
Load of IOF
H3
H1
I/OXFx Bit
(see Note A)
49
XFx
(see Note A)
NOTE A: I/OXFx represents either bit 1 or bit 5 of the IOF register, and INXFx represents either bit 3 or bit 7 of the IOF register depending on
whether XF0 or XF1, respectively, is being affected.
Figure 19. Timing for Change of XFx From Input to Output Mode
27
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