參數(shù)資料
型號: MCF51AC128CVFUE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 50.33 MHz, MICROCONTROLLER, PQFP64
封裝: 14 X 14 MM, LEAD FREE, QFP-64
文件頁數(shù): 21/46頁
文件大小: 1036K
代理商: MCF51AC128CVFUE
MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.4
Electrical Characteristics
Freescale Semiconductor
28
2.10
MCG Specifications
Table 16. MCG Frequency Specifications (Temperature Range = –40 to 105
°C Ambient)
Num C
Rating
Symbol
Min
Typical1
Max
Unit
1C
Internal reference frequency — factory trimmed at
VDD = 5 V and temperature = 25 °C
fint_ft
32.768
kHz
2
C Average internal reference frequency — untrimmed
fint_ut
31.25
39.0625
kHz
3
T Internal reference startup time
tirefst
—60
100
μs
4
C
DCO output frequency
range — untrimmed 2
Low range (DRS=00)
fdco_ut
16
20
MHz
C
Mid range (DRS=01)
32
40
C
High range (DRS=10)
48
60
5
P DCO output frequency2
reference =32768Hz
and DMX32 = 1
Low range (DRS=00)
fdco_DMX32
16.82
MHz
P
Mid range (DRS=01)
33.69
P
High range (DRS=10)
50.48
6D
Resolution of trimmed DCO output frequency at fixed
voltage and temperature (using FTRIM)
Δf
dco_res_t
±0.1
±0.2
%fdco
7D
Resolution of trimmed DCO output frequency at fixed
voltage and temperature (not using FTRIM)
Δf
dco_res_t
±0.2
±0.4
%fdco
8D
Total deviation of trimmed DCO output frequency over
voltage and temperature
Δf
dco_t
0.5
–1.0
±2%f
dco
9D
Total deviation of trimmed DCO output frequency over
fixed voltage and temperature range of 0–70
°C
Δf
dco_t
±0.5
±1%f
dco
10
D FLL acquisition time3
tfll_acquire
——
1
ms
11
D PLL acquisition time4
tpll_acquire
——
1
ms
12
D
Long term jitter of DCO output clock (averaged over
2ms interval) 5
CJitter
—0.02
0.2
%fdco
13
D VCO operating frequency
fvco
7.0
55.0
MHz
16
D Jitter of PLL output clock measured over 625 ns6
fpll_jitter_625ns
—0.5666
—%fpll
17
D Lock entry frequency tolerance 7
Dlock
±1.49
±2.98
%
MCU
EXTAL
XTAL
Crystal or Resonator
RS
C2
RF
C1
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