ST7FMC1K2B3 STMICROELECTRONICS [STMicroelectronics], ST7FMC1K2B3 Datasheet - Page 271

• Manufacturer Part Number: ST7FMC1K2B3
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

12.11 COMMUNICATION INTERFACE CHARACTERISTICS
12.11.1 SPI - Serial Peripheral Interface
Subject to general operating conditions for V
f
Figure 147. SPI Slave Timing Diagram with CPHA=0
Notes:
1. Data based on design simulation and/or characterisation results, not tested in production.
2. When no communication is on-going the data output line of the SPI (MOSI in master mode, MISO in slave mode) has
its alternate function capability released. In this case, the pin status depends on the I/O port configuration.
3. Measurement points are done at CMOS levels: 0.3xV
4. Depends on f
OSC
Symbol
1/t
t
t
t
t
su(SS)
w(SCKH)
w(SCKL)
t
t
t
h(SS)
t
dis(SO)
t
t
t
t
t
t
r(SCK)
f(SCK)
t
su(MI)
t
h(MO)
f
v(MO)
MISO
MOSI
su(SI)
a(SO)
v(SO)
h(SO)
h(MI)
c(SCK)
h(SI)
, and T
SCK
SS
1)
CPHA=0
CPOL=0
CPHA=0
CPOL=1
1)
OUTPUT
INPUT
INPUT
A
SPI clock frequency
SPI clock rise and fall time
SS setup time
SS hold time
SCK high and low time
Data input setup time
Data input hold time
Data output access time
Data output disable time
Data output valid time
Data output hold time
Data output valid time
Data output hold time
unless otherwise specified.
CPU
see note 2
. For example, if f
t
Parameter
a(SO)
t
su(SS)
t
su(SI)
4)
CPU
t
t
MSB IN
w(SCKH)
w(SCKL)
MSB OUT
=8MHz, then T
t
t
h(SI)
c(SCK)
Master
f
Slave
f
Slave
Slave
Master
Slave
Master
Slave
Master
Slave
Slave
Slave
Slave (after enable edge)
Master (after enable edge)
CPU
CPU
t
DD
v(SO)
=8MHz
=8MHz
DD
CPU
,
BIT6 OUT
Conditions
and 0.7xV
= 1/f
Refer to I/O port characteristics for more details on
the input/output alternate function characteristics
(SS, SCK, MOSI, MISO).
3)
CPU
DD
=125ns and t
BIT1 IN
.
t
h(SO)
(4 x T
su(SS)
f
t
t
CPU
r(SCK)
f(SCK)
0.0625
see I/O port pin description
Min
CPU
120
100
100
100
100
100
90
=550ns
0
0
0
0
/128
ST7MC1xx/ST7MC2xx
) + 50
LSB IN
LSB OUT
t
h(SS)
f
f
CPU
CPU
Max
120
240
120
120
2
4
/4
/2
t
dis(SO)
271/309
Unit
MHz
ns
note 2
see