R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 116

• Manufacturer Part Number: R5F21133DFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY/R8C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

R8C/13 Group
Rev.1.20
REJ09B0111-0120
NOTES:
1. TC register and TM0 register must be read in 16-bit units.
2. The INT3 interrupt is acknowledged by digital filter delay and one count source cycle delay (max.)
Table 12.13 Input Capture Mode Specifications
Count source
Count operation
Count start condition
Count stop condition
Interrupt request
generation timing
______
INT3/TC
P10 to P12, P33 to P35
pin function
Counter value reset timing
Read from timer
Write to timer
Select function
12.4.1 Input Capture Mode
This mode uses an edge input to TC
generates an interrupt request. The TC
noise or so on from occurring. Table 12.13 shows specifications in input capture mode. Figure 12.33
shows an operation example of input capture mode.
_______
Jan 27, 2006
IN
Item
pin function
(1)
page 105 of 205
f
• Count up
• Transfer value in TC register to TM0 register at active edge of measurement pulse
• Value in TC register is set to “0000
TCC00 bit in TCC0 register is set to “1” (count start)
TCC00 bit in TCC0 register is set to “0” (count stop)
• When active edge of measurement pulse is input [INT3 interrupt]
• When Timer C overflows [Timer C interrupt]
Programmable I/O port or measurement pulse input (INT3 interrupt input)
Programmable I/O port
When TCC00 bit in TCC0 register is set to “0” (capture disabled)
• Count value can be read out by reading TC register.
• Count value at measurement pulse active edge input can be read out by reading TM0
Write to TC register and TM0 register is disabled
• INT3/TC
• Digital filter function
• Trigger select function
1
register.
Measurement pulse active edge is selected by TCC03 to TCC04 bits
Digital filter sampling frequency is selected by TCC11 to TCC10 bits
TC
, f
_____
8
IN
, f
32
input or f
, f
IN
RING-fast
polarity select function
RING128
IN
pin or the f
IN
input has a digital filter and this prevents an error caused by
is selected by TCC07 bit.
RING128
Specification
16
” when a counting stops
clock as trigger to latch the timer value and
_____
_______
(2)
12.4 Timer (Timer C)