参数资料
型号: ST7PLUSA5B6
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP8
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-8
文件页数: 19/136页
文件大小: 1705K
代理商: ST7PLUSA5B6
Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
ST7LITEUS2, ST7LITEUS5
Electrical characteristics
Figure 62.
RESET pin protection when LVD is disabled
12.10
ADC characteristics
Subject to general operating condition for VDD, fOSC, and TA unless otherwise specified.
0.01
μF
EXTERNAL
RESET
CIRCUIT
USER
Required
ST7XXX
PULSE
GENERATOR
Filter
RON
VDD
INTERNAL
RESET
WATCHDOG
ILLEGAL OPCODE 5)
Table 66.
10-bit ADC characteristics
Symbol
Parameter
Conditions
Min
Typ(1)
1.
Unless otherwise specified, typical data are based on TA=25°C and VDD-VSS=5 V. They are given only as
design guidelines and are not tested.
Max
Unit
fADC
ADC clock frequency(2)
2.
The maximum ADC clock frequency allowed within VDD = 2.4 to 2.7 V operating range is 1 MHz.
4MHz
VAIN
Conversion voltage range(3)
3.
When VDDA and VSSA pins are not available on the pinout, the ADC refers to VDD and VSS.
VSSA
VDDA
V
RAIN
External input resistor
VDD = 5 V, fADC=4 MHz
8(4)
4.
Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than
10k
Ω). Data based on characterization results, not tested in production.
k
Ω
VDD = 3.3 V,
fADC=4 MHz
2.7 V
≤ V
DD ≤5.5 V,
fADC=2 MHz
2.4 V
≤ V
DD ≤2.7 V,
fADC=1 MHz
CADC
Internal sample and hold
capacitor
3pF
tSTAB
Stabilization time after ADC
enable
fCPU=8 MHz,
fADC=4 MHz
0(5)
5.
The stabilization time of the A/D converter is masked by the first tLOAD. The first conversion after the
enable is then always valid.
μs
tADC
Conversion time
(Sample+Hold)
3.5
- Sample capacitor loading
time
- Hold conversion time
4
10
1/fADC
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