Ecosystem; Digilent Pmod™ Connectors; Figure 9. Pmod 1; Table 5. Pmod 1 Connector - Renesas RA4 Series User Manual

Renesas RA Family

5.3 Ecosystem

The Ecosystem connectors provide users the option to simultaneously connect several third-party add-on
modules compatible with two popular ecosystems using the following connectors:
1. Two Digilent Pmod™ (SPI and UART) connectors
2. Arduino™ (Uno R3) connectors
5.3.1 Digilent Pmod™ Connectors
5.3.1.1 Pmod 1
A 12-pin right angle connector can be fitted at PMOD1. A suitable part is Samtec SSW-106-02-T-D-RA. The
connections support Pmod Type-2A (expanded SPI) and Type-3A (expanded UART). The RA MCU acts as
the SPI master, and the connected module acts as an SPI slave device. This interface may additionally be
re-configured in firmware as several other Pmod types.

Table 5. Pmod 1 Connector

Pmod1 Connector Default
Pin Description
PMOD1-1 SS / CTS
PMOD1-2 MOSI / TXD
PMOD1-3 MISO / RXD
PMOD1-4 SCK
PMOD1-5 GND
PMOD1-6 VCC
PMOD1-7 GPIO / INT (slave to master)
PMOD1-8 GPIO / RESET (master to slave)
PMOD1-9 GPIO / CS2
PMOD1-10 GPIO / CS3
PMOD1-11 GND
PMOD1-12 VCC
Pin 6
Pin 12
The default setting of the Pmod 1 interface supports +5 V devices. Please ensure that any Pmod device
installed is compatible with a +5 V supply.
Pmod Type 6A Operation
Pmod 1 can be configured to support proposed Pmod Type 6A connector specification supporting I
connections. There is also an alternative 3.3 V power source option. In order to configure Pmod 1 for Type
6A operation, modify the trace cut jumpers as described in Table 5. The trace cut jumpers are shown in
Figure 10.
R20UT4958EG0100 Rev 1.00
Sep.07.21
FPB-RA4E1
Option
Signal/Bus
Type 6A
NC/INT P103 (SSLA0/CTS0)
NC/RESET P101 (MOSIA/TXD0)
P100 (MISOA/RXD0)
SCL P400 (SCL0)
P102 (RSPCKA)
SDA P401 (SDA0)
GND
+3.3 V
+5.0 V
P015 (IRQ13)
P014
P105 (GPIO/SSLA2)
P106 (GPIO/SSLA3)
GND
+3.3 V
+5.0 V

Figure 9. Pmod 1

FPB-RA4E1 v1 – User's Manual
Pin 1
Pin 7
Pmod 1
Configuration
Short Open
E6 E5
E5 E6
E3 E4
E4 E3
E1 E2
E2 E1
E1 E2
E2 E1
2
C
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