ST72361AR7 STMicroelectronics, ST72361AR7 Datasheet - Page 110
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ST72361AR7
Manufacturer Part Number
ST72361AR7
Description
8-BIT MCU WITH FLASH OR ROM, 10-BIT ADC, 5 TIMERS, SPI, 2x LINSCI™
Manufacturer
STMicroelectronics
Datasheet
1.ST72361AR7.pdf
(225 pages)
Specifications of ST72361AR7
Hdflash Endurance
100 cycles, data retention 40 years at 85°C
5 Power Saving Modes
Halt, Auto Wake Up From Halt, Active Halt, Wait and Slow
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ST72361
SERIAL PERIPHERAL INTERFACE (cont’d)
10.6.3.1 Functional Description
A basic example of interconnections between a
single master and a single slave is illustrated in
Figure
The MOSI pins are connected together and the
MISO pins are connected together. In this way
data is transferred serially between master and
slave (most significant bit first).
The communication is always initiated by the mas-
ter. When the master device transmits data to a
slave device via MOSI pin, the slave device re-
sponds by sending data to the master device via
Figure 71. Single Master/ Single Slave Application
110/225
71.
MSBit
GENERATOR
8-bit SHIFT REGISTER
CLOCK
SPI
MASTER
LSBit
MOSI
SCK
SS
MISO
+5V
the MISO pin. This implies full duplex communica-
tion with both data out and data in synchronized
with the same clock signal (which is provided by
the master device via the SCK pin).
To use a single data line, the MISO and MOSI pins
must be connected at each node (in this case only
simplex communication is possible).
Four possible data/clock timing relationships may
be chosen (see
and slave must be programmed with the same tim-
ing mode.
MOSI
MISO
SCK
SS
Figure 74 on page
MSBit
Not used if SS is managed
by software
8-bit SHIFT REGISTER
SLAVE
114) but master
LSBit
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