Z8F1680SH020SG Datasheet, PDF (382/412 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F1680 Series
Product Specification
357
29.3. AC Characteristics
Table 191 lists the AC characteristics and timing of the Z8 Encore! XP F1680 Series prod-
ucts. All AC timing information assumes a standard load of 50 pF on all outputs.
Table 191. AC Characteristics
Symbol Parameter
F_SYSCLK System Clock Frequency
V_DD = 1.8 to 3.6 V
T_A = 0° C to +70° C
T_A = –40° C to +105° C
Min
Typ Max
–
20.0
0.032768
20.0
T_XIN
System Clock Period
50
–
T_XINH System Clock High Time 20
30
T_XINL System Clock Low Time
20
30
T_XINR System Clock Rise Time
–
3
T_XINF System Clock Fall Time
–
3
Units Conditions
MHz Read-only from Flash
memory. See Figure 74.
MHz Program or erasure of Flash
memory
ns T_CLK = 1/F_sysclk
ns T_CLK = 50 ns
ns T_CLK = 50 ns
ns T_CLK = 50 ns
ns T_CLK = 50 ns
20
MAX CLK FREQ = 15 x V_DD - 16
(V_DD = 1.8-2.4 V)
11
1.8 2.1 2.4 2.7 3.0 3.3 3.6
Voltage (V)
Figure 74. V_DD Versus Maximum System Clock Frequency
PS025015-1212
PRELIMINARY
Electrical Characteristics