Communication Interface Characteristics; Spi - Serial Peripheral Interface; Table 112. Spi Characteristics - STMicroelectronics ST72361 Auto Series Manual

Electrical characteristics
19.12

Communication interface characteristics

19.12.1

SPI - serial peripheral interface

Subject to general operating conditions for V
Refer to I/O port characteristics for more details on the input/output alternate function
characteristics (SS, SCK, MOSI, MISO).

Table 112. SPI characteristics

Symbol
f = 1 / t SPI clock frequency
SCK c(SCK)
t
SPI clock rise and fall
r(SCK)
time
t
f(SCK)
(1)
t SS setup time
su(SS)
(1)
t SS hold time
h(SS)
(1)
t
w(SCKH)
SCK high and low time
(1)
t
w(SCKL)
(1)
t
su(MI)
Data input setup time
(1)
t
su(SI)
(1)
t
h(MI)
Data input hold time
(1)
t
h(SI)
(1)
t Data output access time
a(SO)
(1)
t Data output disable time
dis(SO)
(1)
t Data output valid time
v(SO)
(1)
t Data output hold time
h(SO)
(1)
t Data output valid time
v(MO)
(1)
t Data output hold time
h(MO)
1. Data based on design simulation and/or characterization results, not tested in production.
2. Depends on f . For example, if f
CPU
250/279
Parameter
Master, f
Slave, f
(2)
Slave
Master
Slave
Master
Slave
Master
Slave
Slave
Slave (after enable edge)
Master (after enable
edge)
= 8 MHz, then T
CPU
Doc ID 12468 Rev 3
, f , and T
DD OSC
Conditions
= 8 MHz f
CPU CPU
= 8 MHz
CPU
= 1 / f = 125ns and t
CPU CPU
ST72361xx-Auto
unless otherwise specified.
A
Min Max
/ 128 = 0.0625 f
CPU
0 f
CPU
See I/O port pin description
(4 x T ) + 50
CPU
120
100
90
100
0 120
240
0
120
0
= 550ns.
su(SS)
Unit
/ 4 = 2
MHz
/ 2 = 4
ns
90