Z84C90 Datasheet, PDF (22/31 Pages) Zilog, Inc. – KIO Serial/Parallel Counter Timer

Z84C90
KIO Serial/Parallel Counter Timer
17
Table 5. AC Characteristics of the Z84C90 (Continued)
8MHz
10MHz¹
12MHz
No. Symbol
Parameter
Min Max Min Max Min Max U/M
39 TdCTRr(INTf) CLK/TRG Rise to INT Fall Delay
TsCTRr(Cr) satisfied
TsCTRr(Cr) not satisfied
(36)+(38)
(36)+(38)
(1)+(36)+(38) (1)+(36)+(38)
40 TcCTR
CLK/TRG Cycle Time⁴
(2TcC) DC (2TcC) DC
ns
41 TwCTRh
CLK/TRG Width High
90 DC 90 DC
ns
42 TwCTRI
CLK/TRG Width Low
90 DC 90 DC
ns
43 TrCTR
CLK/TRG Rise Time
30
30
ns
44 TfCTR
CLK/TRG Fall Time
30
30
ns
45 TdCr(ZCr)
Clock Rise to ZC/TO Rise Delay
80
80
ns
46 TdCf(ZCf)
Clock Fall to ZC/TO Fall Delay
80
80
ns
SIO Timing
47 TdIOf(W/Rf) IORQ Fall to WT/RDY Fall Delay
130
110
ns
(Wait Mode)
48 TdCr(W/Rf)
Clock Rise to WT/RDY Delay
(Ready Mode)
85
85
ns
49 TdCf(W/Rz) Clock Fall to WT/RDY Float Delay
90
80
ns
(Wait Mode)
50 TwPh
Pulse Width High
150
120
ns
51 TwPI
Pulse Width Low
150
120
ns
52 TcTxC
TxC Cycle Time
250 DC 200 DC
ns
53 TwTxCh
TxC Width High
85 DC 80 DC
ns
54 TwTxCl
TxC Width Low
85 DC 80 DC
ns
55 TrTxC
TxC Rise Time
60
60
ns
56 TfTxC
TxC Fall Time
60
60
ns
57 TdTxCf(TxD) TxC Fall to TxD Delay (x1 mode)
160
120
ns
58 TdTxCf(W/Rf) TxC Fall to WT/RDY Fall Delay
5
9
5
9
ns
(Ready Mode)⁵
59 TdTxCf(INTf) TxC Fall to INT Fall Delay⁵
5
9
5
9
ns
60 TcRxC
RxC Cycle Time
250 DC 200 DC
ns
61 TwRxCh
RxC Width High
85 DC 80 DC
ns
62 TwRxCl
RxC Width Low
85 DC 80 DC
ns
PS011802-0902