HD6417706F133 Renesas Electronics America, HD6417706F133 Datasheet - Page 383

• Manufacturer Part Number: HD6417706F133
• Description: IC SUPERH MPU ROMLESS 176LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417706F133

• Core Processor: SH-3
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 103
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.75 V ~ 2.05 V
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 176-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

12.4.1
When the STR0 to STR2 bits in TSTR are set to 1, the corresponding timer counter (TCNT) starts
counting. When a TCNT underflows, the UNF flag of the corresponding timer control register
(TCR) is set. At this time, if the UNIE bit in TCR is 1, an interrupt request is sent to the CPU.
Also at this time, the value is copied from TCOR to TCNT and the down-count operation is
continued.
An example of the count operation setting flow
The count operation is shown in figure 12.2.
Note: When an interrupt has been generated, clear the flag in the interrupt handler that caused it.
interrupt generation
Set timer constant
Select operation
If interrupts are enabled without clearing the flag, another interrupt will be generated.
Select counter
Initialize timer
Start counting
Set underflow
Counter Operation
counter
register
clock
Figure 12.2 Setting the Count Operation
Set interrupt
(1)
(2)
(4)
(5)
(6)
generation
When using input
capture function
(3)
(1)
(2)
(3)
(4)
(5)
(6)
Select the counter clock with the TPSC0-TPSC2
bits in the timer control register. If the external
clock is selected, set the TCLK pin to input mode
with the TOCE bit in TOCR, and select its edge
with the CKEG1 and CKEG0 bits in the timer
control register.
Use the UNIE bit in the timer control register to set
whether to generate an interrupt when timer
counter underflows.
When using the input capture function, set the
ICPE bits in the timer control register, including
the choice of whether or not to use the interrupt
function (channel 2 only).
Set a value in the timer constant register
(the cycle is the set value plus 1).
Set the initial value in the timer counter.
Set the STR bit in the timer start register to 1 to
start operation.
Rev. 5.00 May 29, 2006 page 333 of 698
Section 12 Timer Unit (TMU)
REJ09B0146-0500