Explanation of the Demo using STM32 F4-Discovery
S5U13781R00C100 Demonstration Manual
Seiko Epson Corporation
17
(Rev. 2.1)
3.1.3 Connect the S5U13781R00C100 with the STM32 F4-Discovery
A connection example for the S5U13781R00C100 reference board and the STM32 F4-Discovery via SPI
is shown in Figure 3-2,
Connection Example for STM32 F4-Discovery (via SPI)
.
If noise on the SPI signal causes problems, place a resistor of several hundred ohms between the
S5U13781R00C100 and STM 32 F4-Discovery SPI port for the purpose of noise damping.
Figure 3-1 Connection Example for STM32 F4-Discovery (via SPI)
STM32 F4-Discovery
JP-
PIN名
FUNCTION
S5U13781
JP-
PIN名
JP1-1
JP1-2
IDD
IDD
IDD
IDD
CN3-1
CN3-2
SWD
SWD
SWD
SWD
FUNCTION
STM32 F4-Discovery
JP-
PIN名
FUNCTION
STM32 F4-Discovery
JP-
PIN名
FUNCTION
P1-15
PA5
SPI1_SCK
SPI1_MOSI
SPI1_MISOI
SPI1_NSS
P1-17
PA7
P1-18
PA6
P1-16
PA4
J4-27 SCS# SPI CS IN
J4-28
SCK SPI SCK IN
J4-29 MOSI SPI DATA IN
J4-30 MISO SPI DATA
S5U13781
JP-
PIN名
FUNCTION
J4-3 VDDIO
J3-4
3.3V IN
VDDDCDC
3.3V IN
J4-1
GND GND
J4-2
GND GND
CN3-3
CN3-4
SWD
SWD
SWD
SWD
S5U13781
JP-
PIN名
FUNCTION
S5U13781
JP-
PIN名
FUNCTION
J1-1
J1-2
VDDIO VDDIO
FLASH-VCC
VCC
P1-1
GND GND
J4-45
GND GND
P2-50
GND GND
J1-3
GND GND
STM32 F4-Discovery
JP-
PIN名
FUNCTION
P2-3
5V
P2-4
5V IN
5V IN
P2-1
GND GND
P2-2
GND GND
5V
Connect to PC
STM32 F4-Discovery
3.3V external
power supply
5V external
power supply
S5U13781R00C100
3.3V external
power supply
5V external
power supply
