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68HC705SP7 数据表(PDF) 122 Page - Freescale Semiconductor, Inc

部件名 68HC705SP7
功能描述  General Release Specification
PDF  230 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

68HC705SP7 数据表(HTML) 122 Page - Freescale Semiconductor, Inc

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Analog Subsystem
General Release Specification
MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0
Analog Subsystem
Table 8-5. Sample Conversion Timing (VDD = 5.0 Vdc)
Bits
Counts
VX
(Vdc)
A/D Method
Clock Source
fOSC
(MHz)
tCHG
(ms)
CEXT
(
µF)
4
16
3.5
Software Loop
(12 bus cycles)
(24 fOSC cycles)
Mode 0 or 1 (manual)
Low Power Oscillator
0.1
3.840
0.110
External Pin Oscillator
1.0
0.384
0.011
2.0
0.192
0.006
4.0
0.096
0.003
4
16
3.5
Programmable Timer
(prescaler = 8)
Mode 2 or 3
(TOF->ICF or OCF->ICF)
Low Power Oscillator
0.1
1.280
0.037
External Pin Oscillator
1.0
0.128
0.004
2.0
0.064
0.002
4.0
0.032
0.001
6
64
3.5
Software Loop
(12 bus cycles)
(24 fOSC cycles)
Mode 0 or 1 (manual)
Low Power Oscillator
0.1
15.36
0.439
External Pin Oscillator
1.0
1.536
0.044
2.0
0.768
0.022
4.0
0.384
0.011
6
64
3.5
Programmable Timer
(prescaler = 8)
Mode 2 or 3
(TOF->ICF or OCF->ICF)
Low Power Oscillator
0.1
5.120
0.585
External Pin Oscillator
1.0
0.512
0.059
2.0
0.256
0.029
4.0
0.128
0.015
8
256
3.5
Software Loop
(12 bus cycles)
(24 fOSC cycles)
Mode 0 or 1 (manual)
Low Power Oscillator
0.1
61.44
1.755
External Pin Oscillator
1.0
6.144
0.176
2.0
3.072
0.088
4.0
1.536
0.044
8
256
3.5
Programmable Timer
(prescaler = 8)
Mode 2 or 3
(TOF->ICF or OCF->ICF)
Low Power Oscillator
0.1
20.48
0.585
External Pin Oscillator
1.0
2.048
0.059
2.0
1.024
0.029
4.0
0.512
0.015
10
1024
3.5
Programmable Timer
(prescaler = 8)
Mode 2 or 3
(TOF->ICF or OCF->ICF)
Low Power Oscillator
0.1
(note 1)
(note 1)
External Pin Oscillator
1.0
8.192
0.234
2.0
4.096
0.117
4.0
2.048
0.059
12
4096
3.5
Programmable Timer
(prescaler = 8)
Mode 2 or 3
(TOF->ICF or OCF->ICF)
Low Power Oscillator
0.1
(note 1)
(note 1)
External Pin Oscillator
1.0
32.768
0.936
2.0
16.384
0.468
4.0
8.192
0.234
1. Not usable as the value of CEXT would be greater than 2.0 µF
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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