STM32F105V8 STMicroelectronics, STM32F105V8 Datasheet - Page 61

• Manufacturer Part Number: STM32F105V8
• Description: Mainstream Connectivity line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 72 MHz CPU, CAN, USB 2.0 OTG
• Manufacturer: STMicroelectronics

Specifications of STM32F105V8

• Core: ARM 32-bit Cortex™-M3 CPU
• Conversion Range: 0 to 3.6 V
• Dma: 12-channel DMA controller
• Supported Peripherals: timers, ADCs, DAC, I2Ss, SPIs, I2Cs and USARTs
• Systick Timer: a 24-bit downcounter
• 10/100 Ethernet Mac With Dedicated Dma And Sram (4 Kbytes): IEEE1588 hardware support, MII/RMII available on all packages

STM32F105xx, STM32F107xx
5.3.14
Figure 22. 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 39.
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
V
V
V
V
V
Table
NF(NRST)
IH(NRST)
IL(NRST)
Symbol
F(NRST)
hys(NRST)
to the series resistance must be minimum
R
PU
9.
(1)
(1)
(1)
(1)
PU
NRST pin characteristics
(see
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
EXT ERNAL
OUTPUT
ON 50pF
Maximum frequency is achieved if (t r + t f ) ≤ 2/3)T and if the duty cycle is (45-55%)
Table
36).
Parameter
t r(I O)out
Doc ID 15274 Rev 6
(~10% order)
10%
50%
when loaded by 50pF
90%
(2)
.
V
Conditions
DD
V
DD
IN
T
10%
> 2.7 V
supply voltage conditions summarized
=
Table 39
V
50%
SS
90%
t r(I O)out
are derived from tests
–0.5
Min
300
30
2
Electrical characteristics
Typ
200
40
V
DD
Max
100
0.8
50
+0.5
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Unit
mV
kΩ
ns
ns
V