Datasheet

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STM32F072x8 STM32F072xB Electrical characteristics
99
USB characteristics
The STM32F072x8/xB USB interface is fully compliant with the USB specification version
2.0 and is USB-IF certified (for Full-speed device operation).
CAN (controller area network) interface
Refer to Section 6.3.14: I/O port characteristics for more details on the input/output alternate
function characteristics (CAN_TX and CAN_RX).
Table 70. USB electrical characteristics
Symbol Parameter Conditions Min. Typ Max. Unit
V
DDIO2
USB transceiver operating
voltage
-3.0
(1)
1. The STM32F072x8/xB USB functionality is ensured down to 2.7 V but not the full USB electrical
characteristics which are degraded in the 2.7-to-3.0 V voltage range.
-3.6V
t
STARTUP
(2)
2. Guaranteed by design, not tested in production.
USB transceiver startup time - - - 1.0 µs
R
PUI
Embedded USB_DP pull-up
value during idle
- 1.1 1.26 1.5
k
R
PUR
Embedded USB_DP pull-up
value during reception
- 2.0 2.26 2.6
Z
DRV
(2)
Output driver impedance
(3)
3. No external termination series resistors are required on USB_DP (D+) and USB_DM (D-); the matching
impedance is already included in the embedded driver.
Driving high
and low
28 40 44 
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