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SPEAR300 Fiches technique(PDF) 62 Page - STMicroelectronics

No de pièce SPEAR300
Description  Embedded MPU with ARM926 core, flexible memory support, powerful connectivity features and human machine interface
PDF  83 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SPEAR300 Fiches technique(HTML) 62 Page - STMicroelectronics

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Timing requirements
SPEAr300
62/83
Doc ID 16324 Rev 2
6.3
I2C timing characteristics
The characterization timing is done considering an output load of 10 pF on SCL and SDA.
The operating conditions are V = 0.90 V, TA=125° C in worst case and V =1.10 V, TA= 40° C
in best case.
Figure 17.
I2C output pins
Figure 18.
I2C input pins
The flip-flops used to capture the incoming signals are re-synchronized with the AHB clock
(HCLK): so, no input delay calculation is required.
Those values are referred to the common internal source clock which has a period of:
tHCLK = 6 ns.
Table 31.
Output delays for I2C signals
Parameter
Min
Max
Unit
tHCLK->SCLH
8.1067
11.8184
ns
tHCLK->SCLL
7.9874
12.6269
ns
tHCLK->SDAH
7.5274
11.2453
ns
tHCLK->SDAL
7.4081
12.0530
ns
Set
Q
Q
D
Clr
Set
Q
Q
D
Clr
HCLK
SCL
SDA



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