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ST7263BEx bảng dữ liệu(PDF) 141 Page - STMicroelectronics

tên linh kiện ST7263BEx
Giải thích chi tiết về linh kiện  Low speed USB 8-bit MCU family with up to 32 KB Flash/ROM, DFU capability, 8-bit ADC, WDG, timer, SCI and I²C
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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ST7263BEx bảng dữ liệu(HTML) 141 Page - STMicroelectronics

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ST7263Bxx
Electrical characteristics
Doc ID 7516 Rev 8
141/186
13.3
Operating conditions
Figure 54.
fCPU maximum operating frequency versus VDD supply voltage
13.3.1
Operating conditions with low voltage detector (LVD)
Subject to general operating conditions for VDD, fCPU, and TA. Refer to Figure 12 on
page 33.
Table 58.
General operating conditions
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDD
Operating Supply Voltage
fCPU = 8 MHz
45
5.5
V
VDDA
Analog reference voltage
VDD
-VDD
VSSA
Analog reference voltage
VSS
-VSS
fCPU
Operating frequency
fOSC = 24 MHz
-
-
8
MHz
fOSC = 12 MHz
-
-
4
TA
Ambient temperature range
0
-
70
°C
fCPU [MHz]
SUPPLY VOLTAGE [V]
8
4
2
0
2.5
3.0
3.5
4
4.5
5
5.5
FUNCTIONALITY
FUNCTIONALITY
GUARANTEED
FROM 4 TO 5.5 V
NOT GUARANTEED
IN THIS AREA
Table 59.
Operating conditions with LVD
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIT+
Low voltage reset threshold
(VDD rising)
VDD max. variation
50 V/ms
3.4
3.7
4.0
V
VIT-
Low voltage reset threshold
(VDD falling)
VDD max. variation
50V/ms
3.2
3.5
3.8
V
Vhyst
Hysteresis (VIT+ - VIT-)
(1)
1.
Guaranteed by characterization - not tested in production.
100
175
220
mV
VtPOR
VDD rise time rate
(2)
2.
The VDD rise time rate condition is needed to insure a correct device power-on and LVD reset. Not tested
in production.
0.5
-
50
V/ms



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