參數(shù)資料
型號: ST72T631K4D0
廠商: 意法半導體
英文描述: LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
中文描述: 低速USB 8高達16K的內(nèi)存位微控制器系列,高達512字節(jié)RAM,8位ADC,水分散粒劑,定時器,SCI
文件頁數(shù): 98/109頁
文件大?。?/td> 857K
代理商: ST72T631K4D0
ST7263
98/109
7.6 LOW VOLTAGE DETECTOR (LVD) CHARACTERISTICS
7.7 CONTROL TIMING CHARACTERISTICS
(Operating conditions T
A
= 0 to +70°C unless otherwise specified)
Note 1:
The minimum period t
should not be less than the number of cycle times it takes to execute the
interrupt service routine plus 21 cycles.
C
LOW VOLTAGE RESET Electrical Specifications
Symbol
Parameter
Low Voltage Reset Threshold
V
DD
rising
Low Voltage Reset Threshold
V
DD
falling
V
hys
Hysteresis (V
IT+
- V
IT-
)
Conditions
Min
Typ
Max
Unit
V
IT+
V
DD
Max. Variation
50mV/
μ
s
3.6
3.75
4.0
V
V
IT-
V
DD
Max. Variation
50mV/
μ
s
3.2
3.5
3.7
V
200
250
mV
CONTROL TIMINGS
Symbol
Parameter
Conditions
Value
Typ.
Unit
Min
Max
24
8
f
OSC
f
CPU
Oscillator Frequency
Operating Frequency
External RESET
Input pulse Width
Internal Power Reset Duration
Watchdog & Low Voltage Reset
Output Pulse Width
MHz
MHz
t
RL
1.5
t
CPU
t
PORL
4096
t
CPU
T
DOGL
200
ns
t
DOG
Watchdog Time-out
f
cpu
= 8MHz
49152
6
3145728
384
t
CPU
ms
t
OXOV
Crystal Oscillator
Start-up Time
Power up rise time
50
ms
t
DDR
from V
DD
= 0 to 4V
100
ms
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