Abov MC96F6432 Series, User Manual

Page: 133 / 327

MC96F6432
June 22, 2018 Ver. 2.9 133
11.6.3 16-Bit Capture Mode
The 16-bit timer 1 capture mode is set by T1MS[1:0]
as ‘01’. The clock source can use the internal/external
clock. Basically, it has the same function as the 16-bit timer/counter mode and the interrupt occurs when
T1CNTH/T1CNTL is equal to T1ADRH/T1ADRL. The T1CNTH, T1CNTL values are automatically cleared by
match signal. It can be also cleared by software (T1CC).
This timer interrupt in capture mode is very useful when the pulse width of captured signal is wider than the
maximum period of timer.
The capture result is loaded into T1BDRH/T1BDRL.
According to EIPOL1 registers setting, the external interrupt EINT11 function is chosen. Of course, the EINT11
pin must be set as an input port.
A Match
T1CC
T1EN
P
r
e
s
c
a
l
e
r
fx
M
U
X
fx/2
fx/4
fx/64
fx/512
fx/2048
fx/8
fx/1
16-bit Counter
T1CNTH/T1CNTL
16-bit B Data Register
T1BDRH/T1BDRL
Clear
Edge
Detector
T1ECE
EC1
Comparator
16-bit A Data Register
T1ADRH/T1ADRL
T1IFR
INT_ACK
Clear
To interrupt
block
A Match
Buffer Register A
A Match
T1CC
Reload
R
EINT11
T1CNTR
T1EN
3
T1CK[2:0]
Clear
EIPOLB[1:0]
FLAG11
(EIFLAG1.2)
INT_ACK
Clear
To interrupt
block
2
T1MS[1:0]
2
T1EN
T1CRH
1
ADDRESS:BBH
INITIAL VALUE : 0000_0000B
–
T1MS1 T1MS0
– – –
T1CC
– 0 1 – – – X
T1CK1
T1CRL
X
ADDRESS:BAH
INITIAL VALUE : 0000_0000B
T1CK1 T1CK0 T1IFR
–
T1POL T1ECE T1CNTR
X X X – X X X
T1EN
Figure 11.16 16-Bit Capture Mode for Timer 1