Z86C72 Datasheet, PDF (14/71 Pages) Zilog, Inc. – IR MICROCONTROLLER

Z86C72/C92/L72/L92
IR Microcontroller
AC CHARACTERISTICS (Z86L72/L92 LOW VOLTAGE SPECIFICATIONS)
Preliminary
External I/O or Memory Read and Write Timing Table
No
Symbol
Parameter
T_A = 0°C to +70°C
8.0MHz
V_CC
Min
Max
1 TdA(AS)
2 TdAS(A)
3 TdAS(DR)
4 TwAS
Address Valid to
/AS Rising Delay
/AS Rising to Address
Float Delay
/AS Rising to Read
Data Required Valid
/AS Low Width
5 Td
6 TwDSR
Address Float to
/DS Falling
/DS (Read) Low Width
7 TwDSW
/DS (Write) Low Width
8 TdDSR(DR) /DS Falling to Read
Data Required Valid
9 ThDR(DS)
Read Data to /DS Rising
Hold Time
10 TdDS(A)
/DS Rising to Address
Active Delay
11 TdDS(AS)
/DS Rising to /AS
Falling Delay
12 TdR/W(AS)
R//W Valid to /AS
Rising Delay
13 TdDS(R/W)
/DS Rising to
R//W Not Valid
14 TdDW(DSW) Write Data Valid to /DS
Falling (Write) Delay
15 TdDS(DW)
/DS Rising to Write
Data Not Valid Delay
16 TdA(DR)
Address Valid to Read
Data Required Valid
17 TdAS(DS)
/AS Rising to
/DS Falling Delay
18 TdDM(AS)
/DM Valid to /AS
Falling Delay
19 TdDS(DM)
/DS Rise to
/DM Valid Delay
20 ThDS(A)
/DS Rise to Address
Valid Hold Time
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
2.0V
3.9V
55
55
70
70
400
400
80
80
0
0
300
300
165
165
260
260
0
0
85
95
60
70
70
70
70
70
80
80
70
80
475
475
100
100
55
55
70
70
70
70
Notes:
1. When using extended memory timing add 2 TpC
2. Timing numbers given are for minimum TpC
Standard Test Load
All timing references use 0.9 V_CC for a logic 1 and 0.1 V_CC for a logic 0
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Zilog
Notes
2
2
2
1,2
2
1,2
1,2
1,2
2
2
2
2
2
2
2
1,2
2
2
6-14
PRELIMINARY
DS97LVO0900