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STM32MP151AAA3 Arkusz danych(PDF) 228 Page - STMicroelectronics

Numer części STM32MP151AAA3
Szczegółowy opis  Arm® Cortex®-A7 650 MHz Cortex®-M4 MPU, TFT, 35 comm. interfaces, 25 timers, adv. analog
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STM32MP151AAA3 Arkusz danych(HTML) 228 Page - STMicroelectronics

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Electrical characteristics
STM32MP151A
228/245
DS12500 Rev 1
6.3.35
USART interface characteristics
Unless otherwise specified, the parameters given in Table 106 for USART are derived from
tests performed under the ambient temperature, fHCLK frequency and VDD supply voltage
conditions summarized in Table 106, with the following configuration:
•
Output speed is set to OSPEEDRy[1:0] = 10
•
Capacitive load C = 30 pF
•
Measurement points are done at CMOS levels: 0.5×VDD
Refer to Section 6.3.16: I/O port characteristics for more details on the input/output alternate
function characteristics (NSS, CK, TX, RX for USART).
Table 106. USART characteristics(1)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fCK
USART clock frequency
Master mode
USART2,3,6
--
12.5
MHz
Master mode
USART1
16.5
Slave mode
-
-
27
tsu(NSS)
NSS setup time
Slave mode
tker+2
-
-
ns
th(NSS)
NSS hold time
Slave mode
2
-
-
ns
tw(CKH),
tw(CKL)
CK high and low time
Master mode
1/fCK/2 - 1
1/fck/2
1/fCK/2 + 1
ns
tsu(RX)
Data input setup time
Master mode
tker+3
-
-
ns
Slave mode
2
-
-
thRX)
Data input hold time
Master mode
1
-
-
ns
Slave mode
1
-
-
tv(TX)
Data output valid time
Slave mode
-
10
18
ns
Master mode
-
0.5
1
th(TX)
Data output hold time
Slave mode
8
-
-
ns
Master mode
0
-
-
1. 1.Guaranteed by characterization results.



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