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32G474 bảng dữ liệu(PDF) 182 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Arm® Cortex®-M4 32-bit MCUFPU, 170 MHz / 213 DMIPS, 128 KB SRAM, rich analog, math acc, 184 ps 12 chan Hi-res timer
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32G474 bảng dữ liệu(HTML) 182 Page - STMicroelectronics

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Electrical characteristics
STM32G474xB STM32G474xC STM32G474xE
182/236
DS12288 Rev 4
5.3.28
FSMC characteristics
Unless otherwise specified, the parameters given in Table 94 to Table 107 for the FMC
interface are derived from tests performed under the ambient temperature, fHCLK frequency
and VDD supply voltage conditions summarized in Table 17, with the following configuration:
•
Output speed is set to OSPEEDRy[1:0] = 11
•
Capacitive load C = 30 pF
•
Measurement points are done at CMOS levels: 0.5 x VDD
Refer to Section 5.3.14: I/O port characteristics for more details on the input/output
characteristics.
Asynchronous waveforms and timings
Figure 40 through Figure 43 represent asynchronous waveforms and Table 94 through
Table 101 provide the corresponding timings. The results shown in these tables are
obtained with the following FMC configuration:
•
AddressSetupTime = 0x1
•
AddressHoldTime = 0x1
•
DataHoldTime = 0x1
•
ByteLaneSetup = 0x1
•
DataSetupTime = 0x1 (except for asynchronous NWAIT mode, DataSetupTime = 0x5)
•
BusTurnAroundDuration = 0x0
In all timing tables, the THCLK is the HCLK clock period.
tv(TX)
Data output valid time
Master mode
-
0.5
1.5
ns
Slave mode
-
10
22
th(RX)
Data output hold time
Master mode
0
-
-
Slave mode
7
-
-
1. Based on characterization, not tested in production.
Table 93. USART electrical characteristics(1) (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit



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