HD64336901G Renesas Technology, HD64336901G Datasheet - Page 107

• Manufacturer Part Number: HD64336901G
• Description: (HD64xxx Series) 16-BIT MICROCONTROLLER
• Manufacturer: Renesas Technology

The internal RC oscillator frequency is gained by the expression below. Since the input-capture
input is sampled by the
of the
t
M:
A
RC =
RC: Frequency of internal RC oscillator (MHz)
:
capture input
FTIOA input
Period of reference clock ( s)
Timer W counter value
Timer W
RC
Figure 5.10 Timing Chart of Trimming of Internal RC Oscillator Frequency
(M + ) - M
TCNT
GRC
GRA
clock.
RC
t
A
M - 1
(MHz)
M
N
RC
Capture 1
clock, the calculated result may include a sampling error of 1 cycle
M + 1
M
N
t
A
( s)
Rev. 1.00, 11/03, page 79 of 376
M +
M +
Capture 2
M