z84c00 ZiLOG Semiconductor, z84c00 Datasheet - Page 24

• Manufacturer Part Number: z84c00
• Description: Kio Serial/parallel Counter Timer
• Manufacturer: ZiLOG Semiconductor

Table 6.Daisy Chain Parameters (Continued)
PS011802-0902
No. Symbol
19
20
21
Notes: to calculate Z80 KIO daisy-chain timing, use the Z80 PIO, CTC, and SIO with I/O buffers on the chain. The
following are calculation formulas:
1. Parameter 18: M1 falling to IEO delay TdM1(IEO) = TdM1(IO)#1 + TdIEI(IEO)#2 + TdIEI(IEO)#3 + Output Buffer
2. Parameter 19: IEI to IORQ falling setup time TsIEI(IO) = TdIEI(IEO)#1 + TdIEI(IEO)#2 + TdIEI(IEO)#3 + Input
3. Parameter 20: IEI falling delay = TdIEI(IEOf) - TdIEI(IEOf)PIO + TdIEI(IEOf)CTC + TdIEI(IEOf)SIO + (Input buffer
4. Parameter 21: IEI rising to IEO rising delay (after ED decode) - TdIEI(IEOr) = TdIEI(IEOr)PIO + TdIEI(IEOr)CTC
2
3
4
Delay).
Buffer Delay).
Delay) + (Output Buffer Delay).
+ TdIEI(IEOr)SIO + ((Input buffer Delay) + (Output Buffer Delay).
TsIEI (IO)
TdIEI(IEOf)
TdIEI(IEOr)
Parameter
(PIO at #3)
(CTC at #3)
(SIO at #3)
8 MHz
Min
170
170
180
Max
160
160
KIO Serial/Parallel Counter Timer
10 MHz
Min
140
160
160
Max
150
150
12 MHz
Min
130
130
115
Max U/M
125 ns
125 ns
Z84C90
ns
ns
ns
19