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SPEAR320 Folha de dados(PDF) 55 Page - STMicroelectronics

Nome de Peças SPEAR320
Descrição Electrónicos  Embedded MPU with ARM926 core, optimized for factory automation and consumer applications
PDF  73 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SPEAR320 Folha de dados(HTML) 55 Page - STMicroelectronics

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SPEAr320
Timing requirements
Doc ID 16755 Rev 5
55/73
Note:
The timings shown in Figure 10 depend on the programmed value of tSCLHigh and tSCLLow,
so the values present in the three tables here above have been calculated using the
minimum programmable values of :
●
IC_HS_SCL_HCNT=19 and IC_HS_SCL_LCNT=53 registers (for High-Speed mode);
●
IC_FS_SCL_HCNT=99 and IC_FS_SCL_LCNT=215 registers (for Fast-Speed mode);
●
IC_SS_SCL_HCNT=664 and IC_SS_SCL_LCNT=780 registers (for Standard-Speed
mode).
These minimum values depend on the AHB clock frequency, which is 166 MHz.
7.6
FSMC timing characteristics
The characterization timing is done using primetime considering an output load of 3 pF on
the data, 15 pF on FSMC_CSx, FSMC_RE and FSMC_WE and 10 pF on FSMC_ADDR_LE
and FSMC_CMD_LE.
7.6.1
NAND Flash configuration
Figure 11.
Output command signal waveforms for NAND Flash
Table 35.
Timing characteristics for I2C in standard speed mode
Parameter
Min
Unit
tSU-STA
4723.6
ns
tHD-STA
3991.9
tSU-DAT
4676.1
tHD-DAT
0.8
tSU-STO
4027.7
tHD-STO
4742.2
FSMC_CSx
FSMC_WE
FSMC_Dx
Command
tCLE
tWE
tIO
FSMC_CMD_LE



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