参数资料
型号: ST7FSCR1R4T1
厂商: 意法半导体
英文描述: 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
中文描述: 8位低功耗,全速USB微控制器与16K的闪存,768内存,智能卡的I /楼,计时器
文件页数: 79/102页
文件大小: 1413K
代理商: ST7FSCR1R4T1
ST7SCR
79/102
14.3 SUPPLY AND RESET CHARACTERISTICS
(T = 0 to +70
o
C, V
DD
- V
SS
= 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 t
CPU
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
V
IT+
Reset release threshold
(V
DD
rising)
Reset generation threshold
(V
DD
falling)
Hysteresis V
IT+
- V
IT-
V
DD
rise time rate
3.7
3.9
V
V
IT-
3.3
3.5
V
V
hys
V
tPOR
200
mV
20
ms/V
Symbol
Parameter
Conditions
Min
Typ
1)
Max
Unit
t
c(INST)
Instruction cycle time
2
3
12
t
CPU
ns
t
CPU
μ
s
f
CPU
=4MHz
500
10
2.5
750
3000
22
5.5
t
v(IT)
Interrupt reaction time
2)
t
v(IT)
=
t
c(INST)
+ 10
f
CPU
=4MHz
Symbol
V
OSC1H
V
OSC1L
t
w(OSC1H)
t
w(OSC1L)
t
r(OSC1)
t
f(OSC1)
I
L
Parameter
Conditions
Min
0.7xV
DD
V
SS
Typ
Max
V
DD
0.3xV
DD
Unit
OSC1 input pin high level voltage
OSC1 input pin low level voltage
see
Figure 38
V
OSC1 high or low time
3)
15
ns
OSC1 rise or fall time
3)
15
OSCx Input leakage current
V
SS
V
IN
V
DD
±1
μ
A
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