Datasheet

Electrical characteristics STM32F405xx, STM32F407xx
126/202 DocID022152 Rev 8
I
2
S interface characteristics
Unless otherwise specified, the parameters given in Table 56 for the i
2
S interface are
derived from tests performed under the ambient temperature, f
PCLKx
frequency and V
DD
supply voltage conditions summarized in
Table 14, 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 V
DD
Refer to Section 5.3.16: I/O port characteristics for more details on the input/output alternate
function characteristics (CK, SD, WS).
Note: Refer to the I
2
S section of RM0090 reference manual for more details on the sampling
frequency (F
S
). f
MCK
, f
CK
, and D
CK
values reflect only the digital peripheral behavior. The
value of these parameters might be slightly impacted by the source clock accuracy. D
CK
depends mainly on the value of ODD bit. The digital contribution leads to a minimum value
of I2SDIV / (2 x I2SDIV + ODD) and a maximum value of (I2SDIV + ODD) / (2 x I2SDIV +
ODD). F
S
maximum value is supported for each mode/condition.
Table 56. I
2
S dynamic characteristics
(1)
Symbol Parameter Conditions Min Max Unit
f
MCK
I
2
S main clock output -
256 x
8K
256 x F
S
(2)
MHz
f
CK
I
2
S clock frequency
Master data: 32 bits - 64 x F
S
MHz
Slave data: 32 bits - 64 x F
S
D
CK
I
2
S clock frequency duty cycle Slave receiver 30 70 %
t
v(WS)
WS valid time Master mode 0 6
ns
t
h(WS)
WS hold time Master mode 0 -
t
su(WS)
WS setup time Slave mode 1 -
t
h(WS)
WS hold time Slave mode 0 -
t
su(SD_MR)
Data input setup time
Master receiver 7.5 -
t
su(SD_SR)
Slave receiver 2 -
t
h(SD_MR)
Data input hold time
Master receiver 0 -
t
h(SD_SR)
Slave receiver 0 -
t
v(SD_ST)
t
h(SD_ST)
Data output valid time
Slave transmitter (after enable edge) - 27
t
v(SD_MT)
Master transmitter (after enable edge) - 20
t
h(SD_MT)
Data output hold time Master transmitter (after enable edge) 2.5 -
1. Guaranteed by characterization.
2. The maximum value of 256 x F
S
is 42 MHz (APB1 maximum frequency).
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.