参数资料
型号: STM32F100RBT6BXXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 24 MHz, RISC MICROCONTROLLER, PQFP64
封装: 10 X 10 MM, ROHS COMPLIANT, LQFP-64
文件页数: 57/86页
文件大小: 1198K
代理商: STM32F100RBT6BXXX
Electrical characteristics
STM32F100x4, STM32F100x6, STM32F100x8, STM32F100xB
Doc ID 16455 Rev 3
Figure 26.
I/O AC characteristics definition
5.3.13
NRST pin characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, RPU (see Table 33).
Unless otherwise specified, the parameters given in Table 36 are derived from tests
performed under the ambient temperature and VDD supply voltage conditions summarized
Figure 27.
Recommended NRST pin
protection
1.
The reset network protects the device against parasitic resets.
2.
The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in
Table 36. Otherwise the reset will not be taken into account by the device.
ai14131
10%
90%
50%
tr(IO)out
OUTPUT
EXT ERNAL
ON 50pF
Maximum fr equency is achieved if (tr + tf) 2/3)T and if the duty cycle is (45-55%)
10%
50%
90%
when loaded by 50pF
T
tr(IO)out
Table 36.
NRST pin characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIL(NRST)
(1)
1.
Guaranteed by design, not tested in production.
NRST Input low level voltage
–0.5
0.8
V
VIH(NRST)
NRST Input high level voltage
2
VDD+0.5
Vhys(NRST)
NRST Schmitt trigger voltage
hysteresis
200
mV
RPU
Weak pull-up equivalent resistor(2)
2.
The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to
the series resistance must be minimum
(~10% order)
.
VIN VSS
30
40
50
k
VF(NRST)
NRST Input filtered pulse
100
ns
VNF(NRST)
NRST Input not filtered pulse
300
ns
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