U19858EJ1V0PM00_15 Datasheet, PDF (8/25 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCONTROLLER

μPD78F8056, 78F8057, 78F8058
6. CONNECTION BETWEEN MCU AND RF TRANSCEIVER
(1) Internal Connection
Name
RF transceiver
MCU
SCLK_RF
P10/SCK00
SO_RF
P11/SI00
SI_RF
P12/SO00
SEN_RF
P17
GPIO2
P15/RTCDIV/
RTCCL
GPIO3
P16/TI01/
TO01/INTP5
Function(RF transceiver)
Direction
Clock signal of SPI interface
Output signal of SPI interface
Input signal of SPI Interface
Enable signal of SPI interface
High level: disable
Low level: enable
Case of using P15/RTCDIV/ RTCCL, set
input mode to GPIO2.
Case of using GPIO2, set input mode to
P15/RTCDIV/RTCCL.
Case of using P16/TI01/TO01/INTP5, set
input mode to GPIO3.
Case of using GPIO3, set input mode to
P16/TI01/TO01/INTP5.
MCU→
RF transceiver
RF transceiver→
MCU
MCU→
RF transceiver
MCU→
RF transceiver
−
−
(2) Connection externally on the PCB by users
Name
RF transceiver
MCU
RESET_RF
P130
WAKE_RF
P144
INT_RF
CLK_OUT
P31/TI03/
TO03/INTP4
P122/X2/
EXCLK
Function(RF transceiver)
Direction
RESET input signal for transceiver
High level: disable
Low level: enable
Wakeup request signal for transceiver
The active level can be specified by
software setting at RF transceiver.
Interrupt output signal
The active level can be specified by
software setting at RF transceiver.
Clock out at 32/16/8/4/2/1 MHz.
Use system clock MCU.
XTAL_P and XTAL_N of RF transceiver is
main clock at 32 MHz.
MCU→
RF transceiver
MCU→
RF transceiver
RF transceiver→
MCU
RF transceiver→
MCU
Note These are mandatory connection for recommendation library of our company.
The RESET_RF connect to VDD via a resistor of about 10 K ohm.
6
Preliminary Product Information U19858EJ1V0PM