STM32F437XX Datasheet, PDF (149/240 Pages) STMicroelectronics – ARM Cortex-M4 32b MCU+FPU, 225DMIPS, up to 2MB Flash/256+4KB RAM, crypto, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 comm. interfaces, camera&LCD-TFT

STM32F437xx and STM32F439xx
Electrical characteristics
SAI characteristics
Unless otherwise specified, the parameters given in Table 64 for SAI are derived from tests
performed under the ambient temperature, f_PCLKx frequency and VDD supply voltage
conditions summarized in Table 17, with the following configuration:
• Output speed is set to OSPEEDRy[1:0] = 10
• Capacitive load C=30 pF
• Measurement points are performed at CMOS levels: 0.5V_DD
Refer to Section 6.3.17: I/O port characteristics for more details on the input/output alternate
function characteristics (SCK,SD,WS).
Table 64. SAI characteristics⁽¹⁾
Symbol
Parameter
Conditions
f_MCKL
F_SCK
D_SCK
t_v(FS)
t_su(FS)
t_h(FS)
t_{su(SD_MR)}
t_{su(SD_SR)}
t_{h(SD_MR)}
t_{h(SD_SR)}
t_{v(SD_ST)}
t_{h(SD_ST)}
t_{v(SD_MT)}
t_{h(SD_MT)}
SAI Main clock output
SAI clock frequency
SAI clock frequency duty
cycle
FS valid time
FS setup time
FS hold time
Data input setup time
Data input hold time
Data output valid time
Data output hold time
-
Master data: 32 bits
Slave data: 32 bits
Slave receiver
Master mode
Slave mode
Master mode
Slave mode
Master receiver
Slave receiver
Master receiver
Slave receiver
Slave transmitter (after enable
edge)
Master transmitter (after enable
edge)
Master transmitter (after enable
edge)
1. Guaranteed by characterization results.
2. 256xFs maximum corresponds to 45 MHz (APB2 xaximum frequency)
Min
256 x 8K
-
-
30
8
2
8
0
5
3
0
0
-
-
8
Max
256xFs⁽²⁾
64xFs
64xFs
70
22
-
-
-
-
-
-
-
22
20
-
Unit
MHz
MHz
%
ns
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