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ManualsBrandsRENESAS ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller LQFP 100 32-Bit 48 MHz I/O number 77
431432433434435436437438439440
V850ES/JG3-H, V850ES/JH3-H CHAPTER 9 16-BIT TIMER/EVENT COUNTER T (TMT)
R01UH0042EJ0500 Rev.5.00 Page 437 of 1513
Aug 12, 2011
(1) 16-bit counter
This 16-bit counter can count internal clocks or external events.
The count value of this counter can be read by using the TT0CNT register.
When the TT0CTL0.TT0CE bit = 0, the value of the 16-bit counter is FFFFH. If the TT0CNT register is read at this
time, 0000H is read.
Reset sets the TT0CE bit to 0.
(2) CCR0 buffer register
This is a 16-bit compare register that compares the count value of the 16-bit counter.
When the TT0CCR0 register is used as a compare register, the value written to the TT0CCR0 register is
transferred to the CCR0 buffer register. When the count value of the 16-bit counter matches the value of the CCR0
buffer register, a compare match interrupt request signal (INTTTCC00) is generated.
The CCR0 buffer register cannot be read or written directly.
The CCR0 buffer register is set to 0000H after reset, and the TT0CCR0 register is set to 0000H.
(3) CCR1 buffer register
This is a 16-bit compare register that compares the count value of the 16-bit counter.
When the TT0CCR1 register is used as a compare register, the value written to the TT0CCR1 register is
transferred to the CCR1 buffer register. When the count value of the 16-bit counter matches the value of the CCR1
buffer register, a compare match interrupt request signal (INTTTCC01) is generated.
The CCR1 buffer register cannot be read or written directly.
The CCR1 buffer register is set to 0000H after reset, and the TT0CCR1 register is set to 0000H.
(4) Edge detector
This circuit detects the valid edges input to the TIT00, TIT01, EVTT0/TENC00, TENC01, and TECR0 pins. No edge,
rising edge, falling edge, or both the rising and falling edges can be selected as the valid edge by using the
TT0IOC1, TT0IOC2, and TT0IOC3 registers.
(5) Output controller
This circuit controls the output of the TOT00 and TOT01 pins via the TT0IOC0 register.
(6) Selector
This selector selects the count clock for the 16-bit counter. Eight types of internal clocks or an external event can
be selected as the count clock.
(7) Counter control
The count operation is controlled by the timer mode selected by the TT0CTL1 register.