參數(shù)資料
型號： ST7FLIT19BF1U6TR
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, QCC20
封裝： LEAD FREE, QFN-20
文件頁數(shù)： 31/153頁
文件大?。?/td> 2862K
代理商： ST7FLIT19BF1U6TR
ST7LITE1xB
126/153
13.8 I/O PORT PIN CHARACTERISTICS
13.8.1 General Characteristics
Subject to general operating conditions for VDD, fOSC, and TA unless otherwise specified.
Notes:
1. Data based on validation/design results.
2. Configuration not recommended, all unused pins must be kept at a fixed voltage: using the output mode of the I/O for
example or an external pull-up or pull-down resistor (see Figure 79). Static peak current value taken at a fixed VIN value,
based on design simulation and technology characteristics, not tested in production. This value depends on VDD and tem-
perature values.
3. The RPU pull-up equivalent resistor is based on a resistive transistor.
4. To generate an external interrupt, a minimum pulse width has to be applied on an I/O port pin configured as an external
interrupt source.
Figure 79. Two typical Applications with unused I/O Pin
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIL
Input low level voltage
VSS - 0.3
0.3xVDD
V
VIH
Input high level voltage
0.7xVDD
VDD + 0.3
Vhys
Schmitt trigger voltage
hysteresis 1)
400
mV
IL
Input leakage current
VSS≤VIN≤VDD
±1
A
IS
Static current consumption in-
duced by each floating input
pin2)
Floating input mode
400
RPU
Weak pull-up equivalent
resistor3)
VIN=VSS
VDD=5V
50
120
250
k
VDD=3V
160
CIO
I/O pin capacitance
5
pF
tf(IO)out
Output high to low level fall
time 1)
CL=50pF
Between 10% and 90%
25
ns
tr(IO)out
Output low to high level rise
time 1)
25
tw(IT)in
External interrupt pulse time 4)
1tCPU
10k
UNUSED I/O PORT
ST7XXX
10k
UNUSED I/O PORT
ST7XXX
VDD
Caution: During normal operation the ICCCLK pin must be pulled-up, internally or externally
(external pull-up of 10k mandatory in
This is to avoid entering ICC mode unexpectedly during a reset.
noisy environment).
Note: I/O can be left unconnected if it is configured as output (0 or 1) by the software. This has the advantage of greater EMC
robustness and lower cost.
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相關代理商/技術參數(shù)
參數(shù)描述
ST7FLIT19BU6TR 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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ST7FLIT19BY0M6 功能描述:8位微控制器 -MCU ST7LITE1xB 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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