Renesas RL78/G1H, User Manual

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RL78/G1H CHAPTER 11 CLOCK OUTPUT/BUZZER OUTPUT CONTROLLER
R01UH0575EJ0120 Rev. 1.20 Page 271 of 920
Dec 22, 2016
11.3.2 Registers controlling port functions of pins to be used for clock or buzzer
output
Using a port pin for clock or buzzer output requires setting of the registers that control the port functions
multiplexed on the target pin (port mode register (PMxx), port register (Pxx)). For details, see
5.3.1 Port mode
registers (PMxx) and 5.3.2 Port registers (Pxx) .
Specifically, using a port pin with a multiplexed clock or buzzer output function (e.g. P140/INTP6/PCLBUZ0,
P141/INTP7/PCLBUZ1) for clock or buzzer output, requires setting the corresponding bits in the port mode
register (PMxx) and port register (Pxx) to 0.
Example: When P140/INTP6/PCLBUZ0 is to be used for clock or buzzer output
Set the PM140 bit of port mode register 14 to 0.
Set the P140 bit of port register 14 to 0.