Z80185 Datasheet, PDF (13/95 Pages) Zilog, Inc. – SMART PERIPHERAL CONTROLLERS

Zilog
PRELIMINARY
AC CHARACTERISTICS (Continued)
Z80185/Z80195
SMART PERIPHERAL CONTROLLES
No. Symbol Parameter
Z80185 / Z80195
(20 MHz)
Min Max
28a tIOD
28b tIOD
29 tIOD2
30 tIOD3
31 tINTS
32 tINTH
PHI Falling to IORQ Falling Delay IOC = 1)
PHI Rising to IORQ Fallin g Delay (IOC =0)
PHI Falling to IORQ Rising Delay
M1 Falling to IORQ Falling Delay
INT Setup Time to PHI Falling
INT Hold Time from PHI Falling
25
25
25
100
20
10
33 tNMIW
34 tBRS
35 tBRH
36 tBAD1
37 tBAD2
NMI Pulse Width
BUSREQ Setup Time to PHI Falling
BUSREQ Hold Time from PHI Falling
PHI Rising to BUSACK Falling Delay
PHI Falling to BUSACK Rising Delay
35
10
10
25
25
38 tBZD PHI Rising to Bus Floating Delay Time
39 tMEWH MREQ Pulse Width (High)
40 tMEWL MREQ Pulse Width (Low)
41 tRFD1 PHI Rising to RFSH Falling Delay
42 tRFD2 PHI Rising to RFSH Rising Delay
40
tcy –15
2tcy –15
20
20
43 tHAD1 PHI Rising to HALT Falling Delay
44 tHAD2 PHI Rising to HALT Rising Delay
45 tDRQS DREQ Setup Time to PHI Rising
46 tDRQH DREQ Hold Time from PHI Rising
47 tTOD PHI Falling to Timer Output Delay
15
15
20
20
75
48 tRES
49 tREH
50 tOSC
51 tEXr
52 tEXf
RESET Setup Time to PHI Falling
RESET Hold Time From PHI Falling
Oscillator Stabilization Time
External Clock Rise Time (EXTAL)
External Clock Fall Time (EXTAL)
40
25
20
10
10
53 tRr
Reset Rise Time
50
54 tRf
Reset Fall Time
50
55 tIr
Input Rise Time (Except EXTAL, RESET)
50
56 tIf
Input Fall Time (Except EXTAL, RESET)
50
57 tSTDI CSIO Transmit Data Delay Time
75
(Internal Clock Operation)
58 tSTDE
59 tSRSI
60 tSRHI
CSIO Transmit Data Delay Time
(External Clock Operation)
CSIO Receive Data Setup Time
(Internal Clock Operation)
CSIO Receive Data Hold Time
(Internal Clock Operation)
7.5 tcy +75
75
75
61 tSRSE CSIO Receive Data Setup Time
75
(External Clock Operation)
62 tSRHE CSIO Receive Data Hold Time
75
(External Clock Operation)
63 tdCS MREQ Valid to RAMCS and ROMCS Valid Delay
15
64 tdIOCS Rising IORQ Valid to Rising IOCS Valid Delay
10
Z80185 / Z80195
(33 MHz)
Min Max Units
15
ns
15
ns
15
ns
80
ns
15
ns
10
ns
25
ns
10
ns
10
ns
15
ns
15
ns
30
ns
tcy –10
ns
2tcy–10
ns
15
ns
15
ns
15
ns
15
ns
15
ns
15
ns
50
ns
25
ns
15
ns
20
ms
5
ns
5
ns
50
ms
50
ms
50
ns
50
ns
60
ns
7.5 tcy +60 ns
60
ns
60
ns
60
ns
60
ns
15
ns
10
ns
DS971850301
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