Explanation of the Demo using STM32 F4-Discovery
24
Seiko Epson Corporation
S5U13781R00C100 Demonstration Manual
(Rev. 2.1)
3.2.2 Write Image Data into Flash Memory
3.2.2.1 S5U13781R00C100 Connection with UM232H
A connection example for the S5U13781R00C100 reference board and the UM232H via SPI for writing
image data into the M25P16 is described in Figure 3-4,
Connection with UM232H (via SPI)
.
If noise on the SPI signal causes problems, place a resistor of several hundred ohms between the
UM232H and STM 32 F4-Discovery SPI port for the purpose of noise damping.
Figure 3-4 Connection with UM232H (via SPI)
LDO
OSC
S1D13781
14x14mm
QFP
1
2
49
50
2
1
50
49
FLASH
55
1
2
49
50
Connect to PC
FT232H
8x8mm
QFN
Mini
USB
J2
J1
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
1
3
1
14
14
1
51
52
2
1
8
7
J2-7 AD0
J2-8 AD1
J2-9 AD2
J2-10 AD3
J2-3 3V3
J2-2 VIO
J2-6 GND
J1-2 5V0
J1-3 USB
UM232
JP-PIN
Name
FUNCTION
S5U13781
JP-PIN
Name
J1-2
J1-3
5V0
USB
5.0V OUT
VREGIN
J2-2
J2-3
3.3V OUT
VIO
3V3
VCCIO IN
FUNCTION
UM232
JP-PIN
Name
FUNCTION
UM232
JP-PIN
Name
FUNCTION
J2-6
GND
GND
J2-7
AD0
MPSSE/SK
MPSSE/DO
MPSSE/DI
MPSSE/CS
J2-8
AD1
J2-9
AD2
J2-10
AD3
J2-3
J1-2
FLASH-VCC IN
3.3V OUT
3V3
VCC
J4-45
GND
GND
J4-47
SCS#
FLASH CS IN
J4-48
SCK
FLASH SCK IN
J4-49
MOSI
FLASH DATA IN
J4-50
MISO
FLASH DATA
DC
DC
1
55
3.3V external
power supply
S5U13781
JP-PIN
Name
FUNCTION
J4-3
VDDIO
J3-4
3.3V IN
VDDDCDC
3.3V IN
J4-1
GND
GND
J4-2
GND
GND
3.3V external
power supply
