Z84C9008ASG Zilog, Z84C9008ASG Datasheet - Page 24

• Manufacturer Part Number: Z84C9008ASG
• Description: OC 8MHZ Z80 KIO 100 LQFP
• Manufacturer: Zilog

Specifications of Z84C9008ASG

• Processor Type: Z80
• Features: Serial/Parallel Input/Output, Counter/Timer Circuit
• Speed: 8MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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