參數(shù)資料
型號(hào)： SPC560B50L3C5E0R
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-100
文件頁(yè)數(shù)： 57/74頁(yè)
文件大小： 971K
代理商： SPC560B50L3C5E0R
SPC560Bx, SPC560Cx
Electrical characteristics
Doc ID 14619 Rev 4
Figure 29. Transient behavior during sampling phase
In particular two different transient periods can be distinguished:
1.
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
Equation 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:
Equation 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:
Equation 7
2.
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:
Equation 8
In this case, the time constant depends on the external circuit: in particular imposing
that the transient is completed well before the end of sampling time TS, a constraints on
RL sizing is obtained:
VA
VA1
VA2
t
TS
VCS
Voltage transient on CS
ΔV < 0.5 LSB
1
2
τ
1 < (RSW + RAD) CS << TS
τ
2 = RL (CS + CP1 + CP2)
τ
1
R
SW
R
AD
+
()
<
C
S
T
S
V
A1
C
S
C
P1
C
P2
++
()
V
A
C
P1
C
P2
+
()
=
τ
2
R
L
<
C
S
C
P1
C
P2
++
()
τ
1
R
SW
R
AD
+
()
=
C
P
C
S
C
P
C
S
+
----------------------
相關(guān)PDF資料
PDF描述
SPC560B50L3C5E0Y 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100
SPC560B50L5C5E0Y 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP144
SPC560P44L5CEFB MICROCONTROLLER, PQFP144
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SPC560P44L3CEFB MICROCONTROLLER, PQFP100
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SPC560B50L3C6E0X 功能描述:32位微控制器 - MCU 32-BIT Embedded MCU 64 MHz 512kB Body RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
SPC560B50L3C6E0Y 功能描述:32位微控制器 - MCU 32-BIT Embedded MCU 64 MHz 512kB Body RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
SPC560B50L5C6E0X 功能描述:32位微控制器 - MCU 32-BIT Embedded MCU 64 MHz 512kB Body RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
SPC560B50L5C6E0Y 功能描述:32位微控制器 - MCU 32-BIT Embedded MCU 64 MHz 512kB Body RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
SPC560B50SK 功能描述:開(kāi)發(fā)板和工具包 - ARM Raisonance Kit 512K Starter Rflasher 64 RoHS:否 制造商:Arduino 產(chǎn)品:Development Boards 工具用于評(píng)估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口類型:DAC, ICSP, JTAG, UART, USB 工作電源電壓:3.3 V
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