参数资料
型号: MCF51JU32VHS
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: FLASH, 50 MHz, MICROCONTROLLER, QCC44
封装: 5 X 5 MM, QFN-44
文件页数: 14/72页
文件大小: 1031K
代理商: MCF51JU32VHS
Clock modules
6.3.1 MCG specifications
Table 14. MCG specifications
Symbol
Description
Min.
Typ.
Max.
Unit
Notes
fints_ft
Internal reference frequency (slow clock) —
factory trimmed at nominal VDD and 25 °C
32.768
kHz
fints_t
Internal reference frequency (slow clock) — user
trimmed
31.25
39.0625
kHz
Iints
Internal reference (slow clock) current
TBD
A
tirefsts
Internal reference (slow clock) startup time
TBD
4
s
Δfdco_res_t Resolution of trimmed average DCO output
frequency at fixed voltage and temperature —
using SCTRIM and SCFTRIM
± 0.1
± 0.3
%fdco
Δfdco_res_t Resolution of trimmed average DCO output
frequency at fixed voltage and temperature —
using SCTRIM only
± 0.2
± 0.5
%fdco
Δfdco_t
Total deviation of trimmed average DCO output
frequency over voltage and temperature
+ 0.5
- 1.0
± 3.5
%fdco
Δfdco_t
Total deviation of trimmed average DCO output
frequency over fixed voltage and temperature
range of 0–70°C
± 0.5
± TBD
%fdco
fintf_ft
Internal reference frequency (fast clock) —
factory trimmed at nominal VDD and 25°C
3.4
4
MHz
fintf_t
Internal reference frequency (fast clock) — user
trimmed at nominal VDD and 25 °C
3
5
MHz
Iintf
Internal reference (fast clock) current
TBD
A
tirefstf
Internal reference startup time (fast clock)
TBD
s
floc_low
Loss of external clock minimum frequency —
RANGE = 00
(3/5) x
fints_t
kHz
floc_high
Loss of external clock minimum frequency —
RANGE = 01, 10, or 11
(16/5) x
fints_t
kHz
FLL
ffll_ref
FLL reference frequency range
31.25
39.0625
kHz
Table continues on the next page...
6.3
Clock modules
MCF51JF128 Advance Information Data Sheet, Rev. 3, 08/2011.
Freescale Semiconductor, Inc.
Preliminary
21
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