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ST72141K2 Datasheet(PDF) 122 Page - STMicroelectronics

No. de pieza ST72141K2
Descripción Electrónicos  8-BIT MCU WITH ELECTRIC-MOTOR CONTROL, ADC, 16-BIT TIMERS, SPI INTERFACE
PDF  132 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72141K2 Datasheet(HTML) 122 Page - STMicroelectronics

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10.7 MEMORY AND PERIPHERAL CHARACTERISTICS
Recommended operating conditions with TA=-40 to +125
oC and V
DD-VSS=5V unless otherwise specified.
Note:
1) Unless otherwise specified, typical data is based on TA = 25° C and VDD-VSS = 5 V. This data is provided only as de-
sign guidelines and are not tested.
2) The VMTChyst hysteresis is constant.
Figure 64. Motor Control Comparator Characteristics
EPROM
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
WERASE
UV lamp
Lamp wavelength 2537Å
15
W-sec/cm2
tERASE
Erase Time
UV lamp placed 1 inch from
the device window without
any interposed filters
15
20
min
WATCHDOG
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
tw(WDG)
Watchdog time-out duration
12,288
786,432
tCPU
fCPU=8MHz
1.54
98.3
ms
tWDGRST
Watchdog RESET pulse width
500
ns
MOTOR CONTROL
Symbol
Parameter
Conditions
Min
Typ 1)
Max
Unit
VOFFSET
Comparator offset error
<10
100
mV
VMTChyst
MCIA/B/C comparator hysteresis 2)
35
80
130
mV
tPROPAG
Comparator propagation delay
1
µs
Reference voltage tolerance
5
%
R1
VCREF resistance bridge
30
k
Ω
R2
70
0.7
∆α/αα tolerance
5%
∆V
REF
VREF
α=
R1+R2
R2
t
COMPARATOR
IDEAL
REAL
VIN
tPROPAG
tPROPAG
VOFFSET
VOFFSET
VREF+
VMTChyst
2
VREF-
VMTChyst
2



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