Z84C90 Datasheet, PDF (23/31 Pages) Zilog, Inc. – KIO Serial/Parallel Counter Timer

Z84C90
KIO Serial/Parallel Counter Timer
18
Table 5. AC Characteristics of the Z84C90 (Continued)
8MHz
10MHz¹
12MHz
No. Symbol
Parameter
Min Max Min Max Min Max U/M
63 TrRxC
RxC Rise Time
60
60
ns
64 TfRxC
RxC Fall Time
60
60
ns
65 TsRxD(RxCr) RxD to RxC Rise Setup
0
0
ns
66 ThRxCr(RxD) RxC Rise to RxD Hold Time
80
60
ns
67 TdRxCr(W/Rf) RxC Rise to W/RDY Fall Delay
10 13 10 13
ns
(Ready Mode)⁵
68 TdRxCf(INTf) RxC to INT Fall Delay⁵
10 13 10 13
ns
69 TdRxCr
RxC Rise to SYNC Fall Delay
47
4
7
ns
(SYNCf)
(Output Mode)
70 TsSYNCf
SYNC Fall to RxC Rise Setup
-100
-100
ns
(RxCr)
(External Sync Mode)
71 TdCf(IEOr) Clock Fall to IEO Rise Delay
90
75
ns
72 TdCf(IEOf) Clock Fall to IEO Fall Delay
110
90
ns
73 ThDI(M1r,Rdr) Data Hold Time to M1 Rise or RD
0
0
ns
Rise
74 TsM1/RD(C) Setup time for M1 and RD to clock
20
20
Rising (with Data Valid)
Notes:
1. Maximum SIO data rate is f(CLOCK) divided by 5.
2. For a Z80 CPU above 8 MHz, one Wait state is required to meet this parameter.
3. These daisy chain parameters include contributions from the PIO, SIO, and CTC cells, and vary slightly
depending on how these are ordered by the KIO command register. See Table 5.
4. Counter mode only; when using a cycle time less than 3 TcC, parameter #37 must be met.
5. units are TcC.
Table 6.Daisy Chain Parameters
No. Symbol
18¹ TdM1(IEO)
Parameter
(PIO at #1)
(CTC at #1)
(SIO at #1)
8 MHz
10 MHz
12 MHz
Min Max Min Max Min Max U/M
160
150
125 ns
180
150
125 ns
230
200
200 ns
PS011802-0902