Renesas RL78/G1H

RL78/G1H CHAPTER 18 RF TRANSCEIVER
R01UH0575EJ0120 Rev. 1.20 Page 643 of 920
Dec 22, 2016
(82) Port data register (GPIODATA)
This register is used to set the output value when the respective ports of GPIO are set to output.
When a GPIO port is set to input, the pin state (H/L) can be read.
GPIODATA register is set via serial interface in 8-bit units.
Reset signal generation clears this register to 00H.
Figure 18 - 95 Port Data Register (GPIODATA) Format
Caution Be sure to clear bits 5 to 7 to “0”. Bit 5 becomes X (undefined) when read out.
Address: 0083H After reset: 00H R/W
Symbol76543210
GPIODATA 0 0 X GPIO4DATA GPIO3DATA GPIO2DATA GPIO1DATA GPIO0DATA
GPIO4DATA GPIO4 data bit
0 0: Output
1 1: Output
GPIO3DATA GPIO3 data bit
0 0: Output
1 1: Output
GPIO2DATA GPIO2 data bit
0 0: Output
1 1: Output
GPIO1DATA GPIO1 data bit
0 0: Output
1 1: Output
GPIO0DATA GPIO0 data bit
0 0: Output
1 1: Output