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ST7SCR Datasheet(PDF) 79 Page - STMicroelectronics

Part # ST7SCR
Description  8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
PDF  102 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7SCR Datasheet(HTML) 79 Page - STMicroelectronics

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ST7SCR
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14.3 SUPPLY AND RESET CHARACTERISTICS
(T = 0 to +70oC, VDD - VSS = 5.5V unless otherwise specified.
14.4 CLOCK AND TIMING CHARACTERISTICS
14.4.1 General Timings
(Operating conditions T
A = 0 to +70°C unless otherwise specified)
*
∆t
INST is the number of tCPU to finish the current instruction execution.
14.4.2 External Clock Source
LOW VOLTAGE DETECTOR AND SUPERVISOR (LVDS)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIT+
Reset release threshold
(VDD rising)
3.7
3.9
V
VIT-
Reset generation threshold
(VDD falling)
3.3
3.5
V
Vhys
Hysteresis VIT+ - VIT-
200
mV
VtPOR
VDD rise time rate
20
ms/V
Symbol
Parameter
Conditions
Min
Typ 1)
Max
Unit
tc(INST)
Instruction cycle time
2
3
12
tCPU
fCPU=4MHz
500
750
3000
ns
tv(IT)
Interrupt reaction time 2)
tv(IT) = ∆tc(INST) + 10
10
22
tCPU
fCPU=4MHz
2.5
5.5
µs
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOSC1H
OSC1 input pin high level voltage
see Figure 38
0.7xVDD
VDD
V
VOSC1L
OSC1 input pin low level voltage
VSS
0.3xVDD
tw(OSC1H)
tw(OSC1L)
OSC1 high or low time 3)
15
ns
tr(OSC1)
tf(OSC1)
OSC1 rise or fall time 3)
15
IL
OSCx Input leakage current
VSS≤VIN≤VDD
±1
µA



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