參數(shù)資料
型號: MB90574BPFF
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
封裝: PLASTIC, LQFP-120
文件頁數(shù): 5/133頁
文件大小: 2495K
代理商: MB90574BPFF
102
MB90570 Series
(Continued)
7. Notes on Using A/D Converter
Select the output impedance value for the external circuit of analog input according to the following conditions.
Output impedance values of the external circuit of 7 k
or lower are recommended.
When capacitors are connected to external pins, the capacitance of several thousand times the internal capacitor
value is recommended to minimized the effect of voltage distribution between the external capacitor and internal
capacitor.
When the output impedance of the external circuit is too high, the sampling period for analog voltages may not
be sufficient (sampling period = 4.00
s @machine clock of 16 MHz).
Error
The smaller the | AVRH – AVRL |, the greater the error would become relatively.
Linearity error
N + 1
N
N – 1
N – 2
3FF
3FE
3FD
004
003
002
001
Analog input
AVRL
AVRH
Analog input
AVRL
AVRH
Actual conversion
characteristics
VOT (measured value)
VFST
(measured value)
Actual conversion
value
VNT
{1 LSB
× (N – 1)+ VOT}
Theoretical
characteristics
D
ig
it
a
l
o
u
tp
u
t
D
ig
it
a
l
o
u
tp
u
t
Differential linearity error
Theoretical characteristics
V(N + 1)T
(measured value)
Actual conversion
value
VNT (measured
Actual conversion value
Linearity error of
digital output N
VOT: Voltage at transition of digital output from “000H” to “001H
VFST: Voltage at transition of digital output from “3FEH” to “3FFH
[LSB]
VNT – {1 LSB
× (N – 1) + VOT}
1 LSB
=
[V]
VFST – VOT
1022
=
1 LSB
– 1 LSB [LSB]
V(N + 1)T – VNT
1 LSB
=
Differential linearity error
of digital N
Equipment of analog input circuit model
Note: Listed values must be considered as standards.
Comparator
Analog input
C0
C1
MB90573/4, MB90V570/A
R
1.5 k, C 30 pF
MB90F574/A
R
3.0 k, C 65 pF
MB90574B
相關(guān)PDF資料
PDF描述
MB90574BPMT 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
MB90583BPF 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
MB90587PFV 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
MB90587PF 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
MB90623PFV 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB90574C 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90574CPFV 制造商:FUJITSU 功能描述:MicroController, 16-Bit, 120 Pin, Plastic, QFP
MB90574CPMT 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90574PFF 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90574PFV 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller