参数资料
型号: MPC5646CCF0CLU8R
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: 81/115页
文件大小: 783K
代理商: MPC5646CCF0CLU8R
MPC5646C Microcontroller Datasheet, Rev. 4
Preliminary—Subject to Change Without Notice
Electrical Characteristics
Freescale Semiconductor
68
Figure 14. Slow external crystal oscillator (32 kHz) electrical characteristics
1 The crystal used is Epson Toyocom MC306.
2 This is the recommended range of load capacitance at OSC32K_XTAL and OSC32K_EXTAL with respect to
ground. It includes all the parasitics due to board traces, crystal and package.
3 Maximum ESR (R
m) of the crystal is 50 k
4 C0 Includes a parasitic capacitance of 2.0 pF between OSC32K_XTAL and OSC32K_EXTAL pins.
Table 37. Slow external crystal oscillator (32 kHz) 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
fSXOSC
SR — Slow external crystal oscillator
frequency
32
32.768
40
kHz
gmSXOSC
CC — Slow external crystal oscillator
transconductance
VDD = 3.3 V ± 10%,
17.45
28.23
A/V
VDD = 5.0 V ± 10%
17.79
29.91
VSXOSC
CC T Oscillation amplitude
1.2
1.4
1.7
V
ISXOSCBIAS CC T Oscillation bias current
1.2
4.4
A
ISXOSC
CC T Slow external crystal oscillator
consumption
——
7
A
TSXOSCSU CC T Slow external crystal oscillator
start-up time
——
23
3 Start-up time has been measured with EPSON TOYOCOM MC306 crystal. Variation may be seen with other crystal.
s
OSCON bit (OSC_CTL register)
TLPXOSC32KSU
1
VOSC32K_XTAL
VLPXOSC32K
valid internal clock
90%
10%
1/fLPXOSC32K
0
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