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Renesas PROM Programming Adapter PCA7435FPG02 Manuale Utente Pagina 33

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7540 Group
Rev.4.00 Jun 21, 2004 page 33 of 82
REJ03B0011-0400Z
Fig. 29 Block diagram of timer X, timer Y and timer Z
Q
Q
T
Toggle flip-flop
Timer Y count
stop bit
Programmable waveform
gengeration mode
f(X
IN
)/16
f(X
IN
)/2
Timer Y count
source selection bits
Waveform extension function
Timer Y primary waveform
extension control bit
P0
1
/TY
OUT
Timer Y output level latch
Q
Q
T
f(X
IN
)/16
Waveform extension function
Timer Z primary waveform
extenstion control bit
P0
2
/TZ
OUT
INT0
interrupt
request bit
P3
7
/INT
0
f(X
IN
)/2
Timer Z count
stop bit
On-chip oscillator clock RING
(on-chip oscillator output
in Fig. 51, 52)
Q
Q
P1
4
/CNTR
0
R
T
f(X
IN
)/16
f(X
IN
)/2
Timer X
interrupt
request bit
Toggle flip-flop
Timer X count stop bit
Pulse width
measurement
mode
Event
counter
mode
CNTR
0
interrupt
request bit
Pulse output mode
Port P1
4
latch
Port P1
4
direction
register
CNTR
0
active
edge switch bit
Timer mode
Pulse output
mode
CNTR
0
active
edge switch bit
Timer X count
source selection bits
f(X
IN
)
P0
3
/
TX
OUT
Prescaler X latch (8)
Prescaler X (8)
Timer X latch (8)
Timer X (8)
Data bus
“0”
“1”
“0”
“1”
Writing to timer X latch
Pulse output mode
P0
3/TXOUT output valid
Port P0
3
latch
Port P0
3
direction
register
Prescaler Y latch (8)
Prescaler Y (8)
Timer Y primary latch (8)
Timer Y (8)
Data bus
Timer Y secondary latch (8)
Timer Y
interrupt
request bit
Port P0
1
latch
Port P0
1
direction
register
Timer Y secondary
waveform extension
control bit
Prescaler Z latch (8)
Prescaler Z (8)
Timer Z primary latch (8)
Timer Z (8)
Data bus
Timer Z secondary latch (8)
Timer Z
interrupt
request bit
Timer Z count
source selection bits
One-shot pulse
trigger input
INT
0 pin trigger active edge
selection bit
Programmable one-shot generation mode
Programmable wait one-shot generation mode
Timer Z one-shot start bit
Timer Z secondary waveform
extenstion control bit
Port P0
2
latch
Port P0
2
direction
register
Toggle flip flop
Timer Z output
level latch
Programmable waveform generation mode
Programmable one-shot generation mode
Programmable wait one-shot generation mode
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