STM32F100RB STMicroelectronics, STM32F100RB Datasheet - Page 61

• Manufacturer Part Number: STM32F100RB
• Description: Mainstream Value line, ARM Cortex-M3 MCU with 128 Kbytes Flash, 24 MHz CPU, motor control and CEC functions
• Manufacturer: STMicroelectronics

Specifications of STM32F100RB

• Peripherals Supported: timers, ADC, SPIs, I2Cs, USARTs and DACs
• Conversion Range: 0 to 3.6 V
• 16-bit, 6-channel Advanced-control Timer: up to 6 channels for PWM output, dead time generation and emergency stop
• Systick Timer: 24-bit downcounter

STM32F100x4, STM32F100x6, STM32F100x8, STM32F100xB
5.3.14
Figure 26. I/O AC characteristics definition
NRST pin characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, R
Unless otherwise specified, the parameters given in
performed under the ambient temperature and V
in
Table 37.
1. Guaranteed by design, not tested in production.
2. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution
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 V
V
V
V
V
V
Table
NF(NRST)
IH(NRST)
IL(NRST)
Symbol
F(NRST)
the series resistance must be minimum
Table
hys(NRST)
R
PU
37. Otherwise the reset will not be taken into account by the device.
8.
(1)
(1)
(1)
(1)
PU
NRST pin characteristics
(see
EXT ERNAL
NRST Input low level voltage
NRST Input high level voltage
NRST Schmitt trigger voltage
hysteresis
Weak pull-up equivalent resistor
NRST Input filtered pulse
NRST Input not filtered pulse
OUTPUT
ON 50pF
Maximum frequency is achieved if (t r + t f ) ≤ 2/3)T and if the duty cycle is (45-55%)
Table
34).
Parameter
t r(I O)out
Doc ID 16455 Rev 6
(~10% order)
10%
50%
when loaded by 50pF
90%
.
(2)
Conditions
V
DD
IN
T
10%
=
supply voltage conditions summarized
Table 37
V
SS
50%
90%
t r(I O)out
–0.5
Min
300
30
2
are derived from tests
IL(NRST)
Electrical characteristics
max level specified in
Typ
200
40
V
DD
Max
100
0.8
50
+0.5
ai14131
Unit
to
61/87
mV
kΩ
ns
ns
V