参数资料
型号: MPC5646CF0VLU8
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 80 MHz, MICROCONTROLLER, PQFP176
封装: 24 X 24 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, LQFP-176
文件页数: 82/115页
文件大小: 783K
代理商: MPC5646CF0VLU8
Electrical Characteristics
MPC5646C Microcontroller Datasheet, Rev. 4
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
69
4.14
FMPLL electrical characteristics
The device provides a frequency-modulated phase-locked loop (FMPLL) module to generate a fast system clock from the main
oscillator driver.
4.15
Fast internal RC oscillator (16 MHz) electrical characteristics
The device provides a 16 MHz main internal RC oscillator. This is used as the default clock at the power-up of the device and
can also be used as input to PLL.
Table 38. FMPLL electrical characteristics
Symbol
C
Parameter
Conditions1
1 V
DD = 3.3 V ± 10% / 5.0 V ± 10%, TA = 40 to 125 °C, unless otherwise specified.
Value2
2 All values need to be confirmed during device validation.
Unit
Min
Typ
Max
fPLLIN
SR — FMPLL reference clock3
3 PLLIN clock retrieved directly from 4-40 MHz XOSC or 16 MIRC. Input characteristics are granted when oscillator
is used in functional mode. When bypass mode is used, oscillator input clock should verify fPLLIN and PLLIN.
—4
64
MHz
PLLIN
SR — FMPLL reference clock duty
cycle(3)
—40
60
%
fPLLOUT CC P FMPLL output clock
frequency
—16
120
MHz
fCPU
SR — System clock frequency
120 + 2%4
4 f
CPU 120 + 2% MHz can be achieved at 125 °C.
MHz
fFREE
CC P Free-running frequency
20
150
MHz
tLOCK
CC P FMPLL lock time
Stable oscillator (fPLLIN = 16
MHz)
40
100
s
t
LTJIT
CC — FMPLL long term jitter
fPLLIN = 40 MHz (resonator),
fPLLCLK @ 120 MHz, 4000
cycles
——
6
(for < 1ppm)
ns
IPLL
CC C FMPLL consumption
TA = 25 °C
3
mA
Table 39. Fast internal RC oscillator (16 MHz) electrical characteristics
Symbol
C
Parameter
Conditions1
Value2
Unit
Min
Typ
Max
fFIRC
CC P Fast internal RC oscillator high
frequency
TA = 25 °C, trimmed
16
MHz
SR —
12
20
IFIRCRUN
3,
CC T Fast internal RC oscillator high
frequency current in running
mode
TA = 25 °C, trimmed
200
A
IFIRCPWD CC D Fast internal RC oscillator high
frequency current in power
down mode
TA = 25 °C
100
nA
DTA = 55 °C
200
nA
DTA = 125 °C
1
A
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