Z8F082ASH020SC Datasheet, PDF (212/244 Pages) Zilog, Inc. – Z8 Encore XP-R F08xA Series with eXtended Peripherals

Z8 Encore! XP^® F08xA Series
Product Specification
194
AC Characteristics
The section provides information about the AC characteristics and timing. All AC timing
information assumes a standard load of 50pF on all outputs.
Table 120. AC Characteristics
Symbol Parameter
F_SYSCLK System Clock Frequency
F_XTAL Crystal Oscillator Frequency
F_IPO
Internal Precision Oscillator
Frequency
F_IPO
F_IPO
F_IPO
F_IPO
T_XIN
T_XINH
T_XINL
T_XINR
T_XINF
Internal Precision Oscillator
Frequency
Internal Precision Oscillator
Frequency
Internal Precision Oscillator
Frequency
Internal Precision Oscillator
Frequency
System Clock Period
System Clock High Time
System Clock Low Time
System Clock Rise Time
System Clock Fall Time
V_DD = 2.7 to 3.6V
T_A = -40°C to +105°C
Minimum Maximum
–
20.0
0.032768 20.0
1.0
20.0
0.032768 5.5296
5.31
5.75
Units
MHz
MHz
MHz
MHz
MHz
Conditions
Read-only from Flash memory
Program or erasure of the
Flash memory
System clock frequencies
below the crystal oscillator
minimum require an external
clock driver.
Oscillator is not adjustable over
the entire range. User may
select Min or Max value only.
High speed with trimming
4.15
6.91 MHz High speed without trimming
30.7
33.3 KHz Low speed with trimming
24
40
KHz Low speed without trimming
50
–
ns T_CLK = 1/F_sysclk
20
30
ns T_CLK = 50ns
20
30
ns T_CLK = 50ns
–
3
ns T_CLK = 50ns
–
3
ns T_CLK = 50ns
PS024705-0405
PRELIMINARY
Electrical Characteristics