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參數(shù)資料
| 型號： | ST72124J2B7 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES |
| 中文描述： | 8位單電壓閃存，ADC和16位定時器，SPI和脊髓損傷界面微控制器 |
| 文件頁數(shù)： | 108/125頁 |
| 文件大?。?/td> | 776K |
| 代理商： | ST72124J2B7 |
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ST72334J/N, ST72314J/N, ST72124J
108/125
8.5 I/O PORT CHARACTERISTICS
Recommended operating conditions
with T
A
=-40 to +85
o
C and 4.5V<V
DD
-V
SS
<5.5V unless otherwise specified.
Notes:
1)
Unless otherwise specified, typical data arebased on T
A
=25
°
C and V
DD
-V
SS
=5V. They are given only as design guide-
lines and are not tested.
2)
Data based on design simulation and/or technology characteristics, not tested in production.
3)
Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested.
4)
Data based on characterization results, not tested in production.
5)
Positive injection (I
)
The I
is performed through protection diodes insulated from the substrate of the die.
The true open-drain pins do not accept positive injection. In this case the maximum voltage rating must be respected.
6)
ADC accuracy reduced by negative injection (I
)
The I
is performed through protection diodes NOT INSULATED from the substrate of the die. The drawback isa small
leakage (a few
μ
A) induced inside the die when a negative injection is performed. This leakage is tolerated by the digital
structure, but it acts on the analog line depending on the impedance versus a leakage current of a few
μ
A (if the MCU
has an AD converter). The effect depends on the pin which is submitted to the injection. Of course, external digital signals
applied to the component must have a maximum impedance close to 50K
.
Location of the negative current injection:
- Pins with analog input capability are the most sensitive. I
INJ-
maximum is 0.8 mA (assuming that the impedance of the
analog voltage is lower than 25K
)
- Pure digital pins can tolerate 1.6mA. In addition, the best choice is to inject the current as far as possible from the analog
input pins.
7)
When several inputs are submitted to acurrent injection, the maximum I
is the sum of the positive (or negative) cur-
rents (instantaneous values). These results are based on characterisation with I
INJ
maximum current injection on four I/
O port pins of the device.
8)
To generate anexternal interrupt, aminimum pulse width has to be applied onan I/O port pin configured as anexternal
interrupt source.
I/O PORT PINS
Symbol
Parameter
Conditions
Min
Typ
1)
Max
Unit
V
IL
V
IH
V
HYS
Input low level voltage
2)
Input high level voltage
2)
Schmitt trigger voltage hysteresis
3)
3V<V
DD
-V
SS
<5.5V
0.3xV
DD
V
0.7xV
DD
400
mV
V
OL
Output low level voltage
for Standard I/O port pins
I=-5mA
I=-2mA
I=-20mA
I=-8mA
I=-5mA
I=-2mA
V
IN
> V
IH
V
IN
< V
IL
V
SS
<V
PIN
<V
DD
Floating input mode
Positive
5)
: V
EXT
>V
DD
Negative
6)
: V
EXT
<V
SS
Positive: V
EXT
>V
DD
Negative: V
EXT
<V
SS
1.3
0.5
1.3
0.5
V
Output low level voltage
for high sink I/O port pins
V
OH
Output high level voltage
V
DD
-2.0
V
DD
-0.8
20
60
R
PU
Pull-up equivalent resistor
35
100
50
140
1
200
5
-5
tbd
tbd
45.6
4)
45.9
4)
k
I
L
I
SV
Input leakage current
Static current consumption
2)
μ
A
I
PINJ
Single pin injected current
mA
I
INJ
Total injected current
7)
(sum of all I/O and control pins)
t
OHL
t
OLH
t
ITEXT
Output high to low level fall time
Output low to high rise time
External interrupt pulse time
8)
C
l
=50pF
14.8
4)
14.4
4)
1
25
25
ns
t
CPU
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| ST72124J2B7/XXX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES |
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| ST72124J2T1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES |
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| ST72124J2T3 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES |
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