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ST72E311 bảng dữ liệu(PDF) 90 Page - STMicroelectronics

tên linh kiện ST72E311
Giải thích chi tiết về linh kiện  8-BIT MCU WITH 8 TO 16K OTP/EPROM, 384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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ST72E311 bảng dữ liệu(HTML) 90 Page - STMicroelectronics

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ST72E311 ST72T311
7.4 RESET CHARACTERISTICS
(TA=-40...+125
oC 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
(TA = -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
RON
Reset Weak Pull-up RON
VIN > VIH
VIN < VIL
20
60
40
120
80
240
k
Ω
tRESET
Pulse duration generated by watch-
dog and POR reset
1
µs
tPULSE
Minimum pulse duration to be ap-
plied on external RESET pin
10 1)
ns
Symbol
Parameter
Test Conditions
Value
Unit
Min.
Typ.
Max.
gm
Oscillator transconductance
2
9
mA/V
fOSC
Crystal frequency
1
16
MHz
tstart
Osc. start up time
VDD = 5V±10%
50
ms
Low Voltage Detection Reset Electrical Specifications (Option)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
VLVDUP
LVD Reset Trigger, VDD rising edge
fOSC = 8 MHz max
1).
3.6 2)
3.85
4.1
V
VLVDDOWN
LVD Reset Trigger, VDD falling edge
3.35
3.6
3.85
V
VLVDHYS
LVD Reset Trigger, hysteresis2)
250
mV
90



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