RL78/G1H CHAPTER 7 TIMER ARRAY UNIT
R01UH0575EJ0120 Rev. 1.20 Page 150 of 920
Dec 22, 2016
7.3.1 Peripheral enable register 0 (PER0)
This registers is used to enable or disable supplying the clock to the peripheral hardware. Clock supply to a
hardware macro that is not used is stopped in order to reduce the power consumption and noise.
When the timer array unit 0 is used, be sure to set bit 0 (TAU0EN) of this register to 1.
When the timer array unit 1 is used, be sure to set bit 1 (TAU1EN) of this register to 1.
The PER0 register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Figure 7 - 9 Format of Peripheral enable register 0 (PER0)
Caution When setting the timer array unit, be sure to set the following registers first while the TAUmEN bit is
set to 1. If TAUmEN = 0, the values of the registers which control the timer array unit are cleared to
their initial values and writing to them is ignored (except for the timer input select register 0 (TIS0),
noise filter enable register 1 (NFEN1), port mode register 3 (PM3), and port register 3 (P3)).
• Timer status register mn (TSRmn)
• Timer channel enable status register m (TEm)
• Timer channel start register m (TSm)
• Timer channel stop register m (TTm)
• Timer output enable register m (TOEm)
• Timer output register m (TOm)
• Timer output level register m (TOLm)
• Timer output mode register m (TOMm)
Address: F00F0H After reset: 00H R/W
Symbol <7> <6> <5> <4> <3> <2> <1> <0>
PER0 RTCEN IICA1EN ADCEN IICA0EN SAU1EN SAU0EN TAU1EN TAU0EN
TAU1EN Control of timer array unit 1 input clock
0 Stops supply of input clock.
• SFR used by the timer array unit 1 cannot be written.
• The timer array unit 1 is in the reset status.
1 Supplies input clock.
• SFR used by the timer array unit 1 can be read/written.
TAU0EN Control of timer array 0 unit input clock
0 Stops supply of input clock.
• SFR used by the timer array unit 0 cannot be written.
• The timer array unit 0 is in the reset status.
1 Supplies input clock.
• SFR used by the timer array unit 0 can be read/written.
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