MCF51JU128VHS FREESCALE [Freescale Semiconductor, Inc], MCF51JU128VHS Datasheet - Page 22

• Manufacturer Part Number: MCF51JU128VHS
• Description: MCF51JU128
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Clock modules
1. To enter BDM mode following a POR, BKGD/MS should be held low during the power-up and for a hold time of t
6.2 System modules
There are no specifications necessary for the device's system modules.
6.3
6.3.1 MCG specifications
22
Δ
Δf
Symbol
f
fdco_res_t
Δf
Δf
f
loc_high
V
f
dco_res_t
loc_low
f
f
f
f
ints_ft
intf_ft
fll_ref
ints_t
intf_t
DD
dco_t
dco_t
rises above V
Clock modules
Internal reference frequency (slow clock) —
factory trimmed at nominal VDD and 25 °C
Internal reference frequency (slow clock) — user
trimmed
Resolution of trimmed average DCO output
frequency at fixed voltage and temperature —
using SCTRIM and SCFTRIM
Resolution of trimmed average DCO output
frequency at fixed voltage and temperature —
using SCTRIM only
Total deviation of trimmed average DCO output
frequency over voltage and temperature
Total deviation of trimmed average DCO output
frequency over fixed voltage and temperature
range of 0–70°C
Internal reference frequency (fast clock) —
factory trimmed at nominal VDD and 25°C
Internal reference frequency (fast clock) — user
trimmed at nominal VDD and 25 °C
Loss of external clock minimum frequency —
RANGE = 00
Loss of external clock minimum frequency —
RANGE = 01, 10, or 11
FLL reference frequency range
Description
LVD
.
MCF51JU128 Data Sheet, Rev. 4, 01/2012.
Table 13. MCG specifications
Table continues on the next page...
FLL
(16/5) x
(3/5) x
31.25
31.25
f
f
Min.
ints_t
ints_t
—
—
—
—
—
—
3
32.768
± 0.3
± 0.2
± 4.5
± 10
Typ.
3.3
—
—
—
—
—
39.0625
39.0625
± 0.6
± 0.5
Max.
—
—
—
—
—
4
5
Freescale Semiconductor, Inc.
%f
%f
%f
%f
MHz
MHz
Unit
kHz
kHz
kHz
kHz
kHz
dco
dco
dco
dco
MSH
Notes
1
1
1
1
after