參數(shù)資料
型號: ST72171
英文描述: 8-BIT MCU WITH 8K FLASH. ADC. WDG. SPI. SCI. TIMERS SPGAS (SOFTWARE PROGRAMMABLE GAIN AMPLIFIERS). OP-AMP
中文描述: 8位8K閃存微控制器。 ADC的。水分散粒劑。的SPI。脊髓損傷。定時器SPGAS(軟件可編程增益放大器)。運放
文件頁數(shù): 85/93頁
文件大?。?/td> 915K
代理商: ST72171
85/93
ST72E121 ST72T121
7.4 RESET CHARACTERISTICS
(T
A
=-40...+125
o
C and V
DD
=5V±10% unless otherwise specified.
Note:
1)
These values given only as design guidelines and are not tested.
7.5 OSCILLATOR CHARACTERISTICS
(T
A
= -40°C to +125°C unless otherwise specified)
7.6 PERIPHERAL CHARACTERISTICS
Notes:
1. The safe reset cannot be guaranted by the LVD when fosc is greater than 8MHz.
2. Based on characterisation results, not tested.
Symbol
Parameter
Conditions
Min
Typ
1)
Max
Unit
R
ON
Reset Weak Pull-up R
ON
V
IN
> V
IH
V
IN
< V
IL
20
60
40
120
80
240
k
t
RESET
Pulse duration generated by watch-
dog and POR reset
Minimum pulse duration to be ap-
plied on external RESET pin
1
μ
s
t
PULSE
10
1)
ns
Symbol
Parameter
Test Conditions
Value
Typ.
Unit
Min.
2
1
Max.
9
16
50
g
m
f
OSC
t
start
Oscillator transconductance
Crystal frequency
Osc. start up time
mA/V
MHz
ms
V
DD
= 5V±10%
Low Voltage Detection Reset Electrical Specifications (Option)
Parameter
LVD Reset Trigger, V
DD
rising edge
LVD Reset Trigger, V
DD
falling edge
LVD Reset Trigger, hysteresis
2)
Symbol
V
LVDUP
V
LVDDOWN
V
LVDHYS
Conditions
Min.
3.6
2
3.35
Typ.
3.85
3.6
250
Max.
4.1
3.85
Unit
V
V
mV
f
OSC
= 8 MHz max
1)
.
85
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