HD64F3642AH Renesas Electronics America, HD64F3642AH Datasheet - Page 282

• Manufacturer Part Number: HD64F3642AH
• Description: IC H8 MCU FLASH 16K 64QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3642AH

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 9 Timers
Rev. 6.00 Sep 12, 2006 page 260 of 526
REJ09B0326-0600
FTIA
Input capture
signal
FRC
ICRA
ICRC
Buffered input capture timing
Input capture can be buffered by using ICRC or ICRD as a buffer for ICRA or ICRB.
Figure 9.26 shows the timing when ICRA is buffered by ICRC (BUFEA = 1) and both
the rising and falling edges are selected (IEDGA = 1 and IEDGC = 0, or IEDGA = 0 and
IEDGC = 1).
When ICRC or ICRD is used as a buffer register, the input capture flag is still set by the
selected edge of the input capture input signal. For example, if ICRC is used to buffer ICRA,
when the edge transition selected by the IEDGC bit occurs at the input capture pin, ICFC will
be set, and if the ICIEC bit is set, an interrupt will be requested. The FRC value will not be
transferred to ICRC, however.
In buffered operation, if the upper byte of one of the two registers that receives a data transfer
(ICRA and ICRC, or ICRB and ICRD) is being read when an input capture signal would
normally occur, the input capture signal will be delayed by one system clock ( ). Figure 9.27
shows the case when BUFEA = 1.
Figure 9.26 Buffered Input Capture Timing (Normal Case)
M
m
n
M
n
n + 1
N
M
n
N
n
N + 1