K20P81M100SF2_1109 Datasheet, PDF (26/75 Pages) Freescale Semiconductor, Inc – K20 Sub-Family Data Sheet

Peripheral operating requirements and behaviors
TCLK
TRST
J14
J13
Figure 8. TRST timing
6.2 System modules
There are no specifications necessary for the device's system modules.
6.3 Clock modules
6.3.1 MCG specifications
Table 15. MCG specifications
Symbol Description
f_{ints_ft}
Internal reference frequency (slow clock) —
factory trimmed at nominal VDD and 25 °C
f_{ints_t}
Internal reference frequency (slow clock) — user
trimmed
I_ints
Internal reference (slow clock) current
Δ_{fdco_res_t} Resolution of trimmed average DCO output
frequency at fixed voltage and temperature —
using SCTRIM and SCFTRIM
Δf_{dco_t}
Total deviation of trimmed average DCO output
frequency over fixed voltage and temperature
range of 0–70°C
f_{intf_ft}
Internal reference frequency (fast clock) —
factory trimmed at nominal VDD and 25°C
f_{intf_t} Internal reference frequency (fast clock) — user
trimmed at nominal VDD and 25 °C
I_intf
f_{loc_low}
Internal reference (fast clock) current
Loss of external clock minimum frequency —
RANGE = 00
f_{loc_high} Loss of external clock minimum frequency —
RANGE = 01, 10, or 11
Min.
—
31.25
—
—
—
—
3
—
(3/5) x
f_{ints_t}
(16/5) x
f_{ints_t}
Typ.
32.768
—
20
± 0.3
± 1.5
4
—
25
—
—
Table continues on the next page...
Max.
—
38.2
—
± 0.6
± 4.5
—
5
—
—
—
Unit
kHz
kHz
µA
%f_dco
%f_dco
MHz
MHz
µA
kHz
kHz
Notes
1
1
K20 Sub-Family Data Sheet Data Sheet, Rev. 6, 9/2011.
26
Freescale Semiconductor, Inc.