參數(shù)資料
型號： MC9S12E32
廠商： Motorola, Inc.
英文描述： MC9S12E-Family Device User Guide V01.04
中文描述： MC9S12E -系列設(shè)備的用戶手冊V01.04
文件頁數(shù)： 140/156頁
文件大?。?/td> 3077K
代理商： MC9S12E32
Device User Guide — 9S12E128DGV1/D V01.04
140
B.7.2 ATD Operating Characteristics - 3.3V Range
The
Table B-11
shows conditions under which the ATD operates.
The following constraints exist to obtain full-scale, full range results:
VSSA
≤
VRL
≤
VIN
≤
VRH
≤
VDDA
.
This constraint exists since the sample buffer amplifier can not
drive beyond the power supply levels that it ties to. If the input level goes outside of this range it will
effectively be clipped.
Table B-11 3.3V ATD Operating Characteristics
Conditions are shown in
Table A-4
unless otherwise noted; Supply Voltage 3.3V-10% <= V
DDA
<= 3.3V+10%
B.7.3 Factors influencing accuracy
Three factors - source resistance, source capacitance and current injection - have an influence on the
accuracy of the ATD.
B.7.3.1 Source Resistance:
Due to the input pin leakage current as specified in
Table A-6
and
Table A-7
in conjunction with the
source resistance there will be a voltage drop from the signal source to the ATD input. The maximum
source resistance R
S
specifies results in an error of less than 1/2 LSB (2.5mV) at the maximum leakage
current. If device or operating conditions are less than worst case or leakage-induced error is acceptable,
larger values of source resistance are allowed.
Num C
Rating
Symbol
Min
Typ
Max
Unit
1
D
Reference Potential
Low
High
V
RL
V
RH
V
SSA
V
DDA
/2
3.0
V
DDA
/2
V
DDA
3.6
V
V
2
C Differential Reference Voltage
V
RH
-V
RL
f
ATDCLK
3.3
V
3
D ATD Clock Frequency
0.5
2.0
MHz
4
D
ATD 10-Bit Conversion Period
Clock Cycles
1
Conv, Time at 2.0MHz ATD Clock f
ATDCLK
Conv, Time at 4.0MHz
2
ATD Clock f
ATDCLK
NOTES
:
1. The minimum time assumes a final sample period of 2 ATD clocks cycles while the maximum time assumes a final sample
period of 16 ATD clocks.
2. Reduced accuracy see
Table B-13
and
Table B-14
.
N
CONV10
T
CONV10
T
CONV10
14
7
3.5
28
14
7
Cycles
μ
s
μ
s
5
D
ATD 8-Bit Conversion Period
Clock Cycles
(1)
Conv, Time at 2.0MHz ATD Clock f
ATDCLK
N
CONV8
T
CONV8
12
6
26
13
Cycles
μ
s
6
D Recovery Time (V
DDA
=3.3 Volts)
t
REC
20
μ
s
7
P
Reference Supply current
I
REF
0.250
mA
F
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC9S12E32CFU 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC9S12E32CFUE 功能描述:16位微控制器 - MCU SPINY EEL- EPP RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
MC9S12E64CFU 功能描述:16位微控制器 - MCU 16 Bit 16MHz RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
MC9S12E64CFUE 功能描述:16位微控制器 - MCU 16 Bit 16MHz RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
MC9S12E64CFUER 功能描述:16位微控制器 - MCU MORAY EEL RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
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