Z84C90_12 Datasheet, PDF (51/56 Pages) Zilog, Inc. – KIO Serial/Parallel Counter/Timer

Z84C90 KIO Serial/Parallel Counter/Timer
Product Specification
44
Table 7. Daisy Chain Calculation Data* (Continued)
8 MHz
10 MHz
12.5 MHz
10 MHz
TdM1(IEO)
TsIEI(IO)
TdIEI(IEOf)
TdIEI(IEOr)
12.5 MHz
TdM1(IEO)
TsIEI(IO)
Min
Max
PIO Part
60
50
50
50
PIO Part
50
40
Min
Max
CTC Part
60
70
50
50
CTC Part
50
60
Min
Max
Unit
SIO Part
ns
90
ns
50
ns
30
ns
30
ns
SIO Part
ns
70
ns
40
TdIEI(IEOf)
40
40
25
TdIEI(IEOr)
40
40
25
Note: *When using an interrupt from only a portion of the Z84C90 KIO, the numbers in this table are smaller than the
actual values. For example, in Figure 42 on page 42, if Device #1 is PIO, Device #2 is CTC, and Device #3 is
SIO, then at 12.5 MHz, Parameter #18 in Table 6, TdM1(IEO), is PIO TdM1(IEO) + CTC TdIEI(IEO) + SIO
(TdIEI(IEO) + Output Buffer. = 50 ns + 40 ns + 25 ns + 10 ns = 125 ns.
PS011804-0612
AC Characteristics