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参数资料
| 型号： | ST7PLITE20F2B6 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP20 |
| 封装： | 0.300 INCH, PLASTIC, DIP-20 |
| 文件页数： | 9/133页 |
| 文件大小： | 2361K |
| 代理商： | ST7PLITE20F2B6 |
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ST7LITE2
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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 characterization results, not tested in production.
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 67). 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 (corresponding IPU current characteristics de-
scribed in Figure 68).
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 67. Two typical applications with unused I/O Pin
Figure 68. Typical IPU vs. VDD with VIN=VSS
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 induced
by each floating input pin2)
Floating input mode
400
RPU
Weak pull-up equivalent resistor3)
VIN=V
SS
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 noisy environment. This is to avoid entering ICC mode unexpectedly during a reset.
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.
TO BE CHARACTERIZED
0
10
20
30
40
50
60
70
80
90
22.5
33.5
4
4.5
5
5.5
6
Vdd(V)
Ip
u
(u
A
)
Ta=1 40°C
Ta=9 5°C
Ta=2 5°C
Ta=-45 °C
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