参数资料
型号: ST72F60E1M1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO24
封装: 0.300 INCH, LEAD FREE, PLASTIC, SOP-24
文件页数: 26/139页
文件大小: 1993K
代理商: ST72F60E1M1
ST7260xx
Electrical characteristics
121/139
16.8
I/O port pin characteristics
16.8.1
General characteristics
Subject to general operating conditions for VDD, fCPU, and TA unless otherwise specified.
Figure 51.
Two typical applications with unused I/O pin
Table 70.
I/O port characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIL
Input low level voltage
0.3xVDD
V
VIH
Input high level voltage
0.7xVDD
VIN
Input voltage
True open drain I/O
pins
VSS
6.0
V
Other I/O pins
VDD
Vhys
Schmitt trigger voltage
hysteresis
400
mV
IL
Input leakage current
VSSVINVDD
±1
μA
IS
Static current
consumption induced by
each floating input pin (1)
1.
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 51). 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 temperature values.
Floating input mode
400
RPU
Weak pull-up equivalent
resistor (2)
2.
The RPU pull-up equivalent resistor is based on a resistive transistor (corresponding IPU current
characteristics described in Figure 52).
VIN=VSS
VDD=5 V
50
90
120
k
Ω
CIO
I/O pin capacitance
5
pF
tf(IO)out
Output high to low level
fall time
CL=50 pF
Between 10% and
90%
25
ns
tr(IO)out
Output low to high level
rise time
25
tw(IT)in
External interrupt pulse
time (3)
3.
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.
1tCPU
10k
Ω
UNUSED I/O PORT
ST72XXX
10k
Ω
UNUSED I/O PORT
ST72XXX
VDD
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