Z86C61/62/96
Zilog CMOS Z8 Microcontroller
DS97Z8X1600 P R E L I M I N A R Y 13
1
AC CHARACTERISTICS
External I/O or Memory Read and Write Timing
Z86C61/62/96 (16 MHz)
T
A
= 0°C to
+70°C
T
A
= -40°C to
+105°C
16 MHz 16 MHz
No Symbol Parameter Min Max Min Max Units Notes
1 TdA(AS) Address Valid to /AS rise Delay 25 25 ns 2,3
2 TdAS(A) /AS rise to Address Float Delay 35 35 ns 2,3
3 TdAS(DR) /AS rise to Read Data Req’d Valid 150 150 ns 1,2,3
4 TwAS /AS Low Width 40 40 ns 2,3
5 TdAZ(DS) Address Float to /DS fall 0 0 ns
6 TwDSR /DS (Read) Low Width 135 135 ns 1,2,3
7 TwDSW /DS (Write) Low Width 80 80 ns 1,2,3
8 TdDSR(DR) /DS fall to Read Data Req’d Valid 75 75 ns 1,2,3
9 ThDR(DS) Read Data to /DS rise Hold Time 0 0 ns 2,3
10 TdDS(A) /DS rise to Address Active Delay 50 50 ns 2,3
11 TdDS(AS) /DS rise to /AS fall Delay 35 35 ns 2,3
12 TdR/W(AS) R//W Valid to /AS rise Delay 25 25 ns 2,3
13 TdDS(R/W) /DS rise to R//W Not Valid 35 35 ns 2,3
14 TdDW(DSW) Write Data Valid to /DS fall (Write)
Delay
25 25 ns 2,3
15 TdDS(DW) /DS rise to Write Data Not Valid
Delay
35 35 ns 2,3
16 TdA(DR) Address Valid to Read Data Req’d
Valid
210 210 ns 1,2,3
17 TdAS(DS) /AS rise to /DS fall Delay 45 45 ns 2,3
18 TdDM(AS) /DM Valid to /AS rise Delay 25 25 ns 2,3
Notes:
1. When using extended memory timing add 2 TpC.
2. Timing numbers given are for minimum TpC.
3. See clock cycle dependent characteristics table.
Standard Test Load
All timing references use 2.0 V for a logic 1 and 0.8 V for a logic 0.
Table 5. Clock Dependent Formulas
Number Symbol Equation
1 TdA(AS) 0.40 TpC + 0.32
2 TdAS(A) 0.59 TpC – 3.25
3 TdAS(DR) 2.83 TpC + 6.14
4 TwAS 0.66 TpC – 1.65
6 TwDSR 2.33 TpC – 10.56
7 TwDSW 1.27 TpC + 1.67
8 TdDSR(DR) 1.97 TpC – 42.5
10 TdDS(A) 0.8 TpC
11 TdDS(AS) 0.59 TpC – 3.14
12 TdR/W(AS) 0.4 TpC
13 TdDS(R/W) 0.8 TpC – 15
14 TdDW(DSW) 0.4 TpC
15 TdDS(DW) 0.88 TpC – 19
16 TdA(DR) 4 TpC – 20
17 TdAS(DS) 0.91 TpC – 10.7
18 TdDM(AS) 0.9 TpC – 26.3
Table 5. Clock Dependent Formulas
Number Symbol Equation
