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| 型號(hào)： | TRK-MPC5604P |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 73/104頁 |
| 文件大?。?/td> | 0K |
| 描述： | 5604P TTK BD |
| 設(shè)計(jì)資源： | TRK-MPC5604P Component List TRK-MPC5604P Schematic |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | MPC56xx |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | MPC5604P |
| 所含物品： | 板，線纜，CD，DVD |
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MPC5604P Microcontroller Data Sheet, Rev. 8
Freescale
70
Figure 16. Transient behavior during sampling phase
In particular two different transient periods can be distinguished:
A first and quick charge transfer from the internal capacitance CP1 and CP2 to the sampling capacitance CS occurs (CS
is supposed initially completely discharged): considering a worst case (since the time constant in reality would be
faster) in which CP2 is reported in parallel to CP1 (call CP = CP1 + CP2), the two capacitances CP and CS are in series,
and the time constant is
Eqn. 5
Equation 5 can again be simplified considering only CS as an additional worst condition. In reality, the transient is
faster, but the A/D converter circuitry has been designed to be robust also in the very worst case: the sampling time TS
is always much longer than the internal time constant:
Eqn. 6
The charge of CP1 and CP2 is redistributed also on CS, determining a new value of the voltage VA1 on the capacitance
according to Equation 7:
Eqn. 7
A second charge transfer involves also CF (that is typically bigger than the on-chip capacitance) through the resistance
RL: again considering the worst case in which CP2 and CS were in parallel to CP1 (since the time constant in reality
would be faster), the time constant is:
Eqn. 8
VA
VA1
VA2
t
TS
VCS
Voltage Transient on CS
V <0.5 LSB
1
2
1 < (RSW + RAD) CS << TS
2 = RL (CS + CP1 + CP2)
1 RSW RAD
+
=
CP CS
CP CS
+
---------------------
1 RSW RAD
+
CS TS
VA1 CS CP1 CP2
++
VA CP1 CP2
+
=
2 RL
CS CP1 CP2
++
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| TRK-MPC5606B | 制造商:Freescale Semiconductor 功能描述:MPC5606B 144PIN REV 2.1 - Boxed Product (Development Kits) 制造商:Freescale Semiconductor 功能描述:STARTERTRAK DEV BOARD MPC5606B 制造商:Freescale Semiconductor 功能描述:MPC560 QORIVVA STARTER TRAK 制造商:Freescale Semiconductor 功能描述:PRIMARY PLATFORM ((NW)) 制造商:Freescale Semiconductor 功能描述:MPC560, QORIVVA, STARTER TRAK, DEV KIT 制造商:Freescale Semiconductor 功能描述:MPC5606B 144pin 制造商:Freescale Semiconductor 功能描述:EVAL KIT, MPC560B STARTERTRAK AUTO BODY ELECT; Silicon Manufacturer:Freescale; Core Architecture:Power Architecture; Core Sub-Architecture:Power Architecture; Silicon Core Number:MPC5xxx; Silicon Family Name:Qorivva |
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| TRK-MPC5634M | 功能描述:開發(fā)板和工具包 - 其他處理器 TRAK 5634M 144pn R2.1 RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
| TRK-USB-MPC5602P | 功能描述:開發(fā)板和工具包 - 其他處理器 STRAKMiniUSB RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
| TRK-USB-MPC5604B | 功能描述:開發(fā)板和工具包 - 其他處理器 MiniUSB MPC5604B RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
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