Z86C34 Datasheet, PDF (14/70 Pages) Zilog, Inc. – CMOS Z8 MCUs WITH ASCI UART OFFER EFFICIENT, COST-EFFECTIVE DESIGN FLEXIBILITY

Z86C34/C35/C36/C44/C45/C46
CMOS Z8® MCUs with ASCI UART
ZiLOG
AC ELECTRICAL CHARACTERISTICS (Continued)
Table 6. External I/O or Memory READ and WRITE Timing (C44/C45/C46 Only)
(SCLK/TCLK = XTAL/2)
T_A = –0ºC to 70ºC
T_A = –40ºC to +105ºC
12 MHz 16 MHz 12 MHz 16 MHz
No Symbol
Parameter
V_{CC1 Min Max Min Max Min Max Min Max Units Notes}
1 TdA(AS) Address Valid to AS 3.0 35
25
35
25
ns 2
Rise Delay
5.5 35
25
35
25
ns 2
2 TdAS(A) AS Rise to Address 3.0 45
35
45
35
ns 2
Float Delay
5.5 45
35
45
35
ns 2
3 TdAS(DR) AS Rise to Read
3.0
250
180
250
180 ns 2,3
Data Req’d Valid
5.5
250
180
250
180 ns 2
4 TwAS
AS Low Width
3.0 55
40
55
40
ns 2
5.5 55
40
55
40
ns 2
5 TdAS(DS) Address Float to DS 3.0 0
0
0
0
ns
Fall
5.5 0
0
0
0
ns
6 TwDSR
DS (Read) Low
3.0 200
135
200
135
Width
5.5 200
135
200
135
ns 2,3
ns 2,3
7 TwDSW
DS (WRITE) Low
3.0 110
80
110
80
Width
5.5 110
80
110
80
ns 2,3
ns 2,3
8 TdDSR(DR) DS Fall to Read Data 3.0
150
75
150
75 ns 2,3
Req’d Valid
5.5
150
75
150
75 ns 2,3
9 ThDR(DS) Read Data to DS
3.0 0
0
0
0
ns 2
Rise Hold Time
5.5 0
0
0
0
ns 2
10 TdDS(A) DS Rise to Address 3.0 45
50
45
50
ns 2
Active Delay
5.5 55
50
55
50
ns 2
11 TdDS(AS) DS Rise to AS Fall 3.0 30
35
30
35
ns 2
Delay
5.5 45
35
45
55
ns 2
12 TdR/W(AS) R/W Valid to AS Rise 3.0 45
25
45
25
ns 2
Delay
5.5 45
25
45
25
ns 2
13 TdDS(R/W) DS Rise to R/W Not 3.0 45
35
45
35
ns 2
Valid
5.5 45
35
45
35
ns 2
14 TdDW(DSW) WRITE Data Valid to 3.0 55
25
55
25
ns 2
DS Fall (WRITE)
5.5 55
25
55
25
ns 2
Delay
15 TdDS(DW) DS Rise to WRITE
3.0 45
35
45
35
ns 2
Data Not Valid Delay _{5.5 45}
35
45
35
ns 2
16 TdA(DR) Address Valid to
3.0
310
230
310
230 ns 2,3
Read Data Req’d
5.5
310
230
310
230 ns 2,3
Valid
Notes:
1. The V_CC voltage specification of 3.0V guarantees 3.3V ± 0.3V, and the V_CC voltage specification of 5.5V guarantees 5.0V
± 0.5V.
2. Timing numbers provided are for minimum TpC.
3. When using extended memory timing add 2 TpC.
14
PRELIMINARY
DS007601-Z8X0499