User Guide
29 of 56
002-32436 Rev. *B
<2021-06>
CY8CKIT-041S-
MAX PSoC™ 4100S Max pioneer kit guide
Hardware
Figure 17
Schematics of PSoC
™
5LP-based KitProg3
3.2.2.1
Serial interface between KitProg3 and PSoC™ 4100S Max MCU
In addition to the use as an onboard programmer/debugger, the PSoC
™
5LP device functions as an interface for
the USB-UART and USB-I2C bridges, as shown in
. The USB-Serial pins of the PSoC
™
5LP device are
hard-wired to the I2C/UART pins of PSoC
™
4100S Max MCU. I2C pins are also available on the Arduino-
compatible I/O headers.
Figure 18
Schematics of serial interface between KitProg3 and PSoC
™
4100S Max MCU
XRES_L
VTARG
R93
10K
DNI
MCU SWD Interface
R89
0 OHM
P3_3
RESET
R83
10K
DNI
R79
0 OHM
SWDIO
R63
0 OHM
P3_2
SWDCLK
P0_6
R9
0 OHM
P0_7
R65
10K
DNI
UART Interface with H/W Flow Control
IO_P0_6
UART_TX
R72
10K
DNI
UART_RX
R62
0 OHM
DNI
R74
0 OHM
IO_P0_7
P0_4
R68
0 OHM
UART_RTS
P0_5
VTARG
R58
0 OHM
DNI
UART_CTS
R10
0 OHM
P1_0
R57
0 OHM
I2C_SDA
R54
4.7K
VTARG
I2C_SCL
R52
0 OHM
I2C Interface
P1_1
R60
4.7K
74LVC1T45DW-7
U6
VCCA
1
GND
2
A
3
B
4
DIR
5
VCCB
6
P5LP_VDD
P5LP15_5
R67
100K
DNI
C47
0.1uF
16V
UART_RTS
P5LP_VDD
C55
0.1uF
16V
Primary UART H/W Flow Control Level Translator
74LVC1T45DW-7
U5
VCCA
1
GND
2
A
3
B
4
DIR
5
VCCB
6
P5LP1_6
VTARG
C48
0.1uF
16V
UART_CTS
R75
100K
C54
0.1uF
16V