Renesas S3A1, User Manual

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Target Board Kit S3A1 (TB-S3A1) Hardware Layout
R12UM0022EU0100 Rev.1.00 Page 17 of 36
Feb 6, 2018
4.4.6 PMOD A
A 12-pin PMOD type 2A connector is provided at PMOD A. The interface is
powered for 3.3V modules only. The Main 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.
Note that signals on PMOD A are shared with Main MCU pin header J1 and J2. Care
must be taken to ensure shared signals are not used concurrently.
Table 9 PMOD A connector (J5)
PMOD A connector TB-S3A1
Pin Description Signal/Bus
1 SS (low to select slave) U1 P103, SSLA0_A (U1-72)
2 MOSI U1 P101, MOSIA_A (U1-74)
3 MISO U1 P100, MISOA_A (U1-75)
4 SCK U1 P102, RSPCKA_A (U1-73)
5 GND GND
6 VCC +3V3
7 INT (slave to master) U1 P104, IRQ1 (U1-71)
8 RESET (master to slave) U1 P107, GPIO (U1-68)
9 Not Specified U1 P111, GPIO (U1-54)
10 Not Specified U1 P112, GPIO (U1-55)
11 GND GND
12 VCC +3V3
Limits of the 3.3V regulator on the Target Board, and limits of the power source supplying that regulator (especially for
USB Host devices), including the to-be-connected PMOD device, must be considered prior to connecting a module to a
PMOD connector.
4.4.7 PMOD B
A 6-pin PMOD type 4 connector is provided at PMOD B. The interface is powered for
3.3V modules only. The Main MCU acts as the UART DCE, and the connected module
acts as the UART DTE. This interface may additionally be re-configured in firmware as
some other PMOD types.
Note that signals on PMOD B are shared with the Main MCU pin header J1 and J2. Care
must be taken to ensure shared signals are not used concurrently.
Table 10 PMOD B connector (J6)
PMOD B connector TB-S3A1
Pin Description Signal/Bus
1 CTS (from module) U1 P403, CTS1 (U1-4)
2 TXD U1 P401, TXD1 (U1-2)
3 RXD U1 P402, RXD1 (U1-3)
4 RTS (from Main MCU)
U1 P400, GPIO (U1-1)
(for RTS by Main MCU firmware)