Datasheet

Electrical characteristics STM32F446xC/E
134/202 DocID027107 Rev 6
Note: Refer to the I2S section of RM0390 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 values of these
parameters might be slightly impacted by the source clock precision. D
CK
depends mainly
on the value of ODD bit. The digital contribution leads to a minimum value of
(I2SDIV/(2*I2SDIV+ODD) and a maximum value of (I2SDIV+ODD)/(2*I2SDIV+ODD). F
S
maximum value is supported for each mode/condition.
t
v(WS)
WS valid time Master mode - 5.5
ns
t
h(WS)
WS hold time Master mode 1 -
t
su(WS)
WS setup time
Slave mode 1 -
- PCM short pulse Slave mode
(3)
2-
t
h(WS)
WS hold time
Slave mode 3 -
- PCM short pulse Slave mode
(3)
1.5 -
t
su(SD_MR)
Data input setup time
Master receiver 3 -
t
su(SD_SR)
Slave receiver 2.5 -
t
h(SD_MR)
Data input hold time
Master receiver 4 -
t
h(SD_SR)
Slave receiver 1 -
t
v(SD_ST)
Data output valid time
Slave transmitter (after enable edge) - 16
t
v(SD_MT)
Master transmitter (after enable edge) - 4.5
t
h(SD_ST)
Data output hold time
Slave transmitter (after enable edge) 5 -
t
h(SD_MT)
Master transmitter (after enable edge) 1 -
1. Guaranteed based on test during characterization.
2. The maximum value of 256xFs is 45 MHz (APB1 maximum frequency).
3. Measurement done with respect to I2S_CK rising edge.
Table 66. I
2
S dynamic characteristics
(1)
(continued)
Symbol Parameter Conditions Min Max Unit
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