参数资料
型号: ST72141K2B3/XXX
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, PDIP32
封装: 0.400 INCH, PLASTIC, SDIP-32
文件页数: 27/133页
文件大小: 2615K
代理商: ST72141K2B3/XXX
Obsolete
Product(s)
- Obsolete
Product(s)
ST72141K2
122/133
10.7 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
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
Δα/αα tolerance
5%
ΔVREF
VREF
α=
R1+R2
R2
t
COMPARATOR
IDEAL
COMP
A
RA
TOR
OUT
PUT
REAL
VIN
tPROPAG
VOFFSET
VREF+
VMTChyst
2
VREF-
VMTChyst
2
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