M37544 RENESAS [Renesas Technology Corp], M37544 Datasheet - Page 25

• Manufacturer Part Number: M37544
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
• Manufacturer: RENESAS [Renesas Technology Corp]

Rev.1.04
REJ03B0012-0104Z
7544 Group
Fig. 24 Structure of timer X mode register
Fig. 25 Timer count source set register 1
b7
b7
Note : f(X
a ceramic resonator or on-chip oscillator.
Do not use it at RC oscillation.
2004.06.08
IN
) can be used as timer X count source when using
b0
b0
Timer count source set register 1
(TCSS1 : address 002E
Timer X mode register
(TXM : address 002B
Disable (return “0” when read)
Timer X count source selection bits
Timer X operating mode bits
CNTR
Timer X count stop bit
P0
Disable (return “0” when read)
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b1 b0
0
0
1
1
b1 b0
0
0
1
1
0 : Interrupt at falling edge
1 : Interrupt at rising edge
0 : Count start
1 : Count stop
0 : Output invalid (I/O port)
1 : Output valid (Inverted CNTR
3
/TX
0 : f(X
1 : f(X
0 : f(X
1 : Not available
0 : Timer mode
1 : Pulse output mode
0 : Event counter mode
1 : Pulse width measurement mode
0
Count at rising edge
(in event counter mode)
Count at falling edge
(in event counter mode)
OUT
active edge switch bit
IN
IN
IN
output valid bit
)/16
)/2
) (Note)
16
, initial value: 00
16
, initial value: 00
0
output)
16
)
16
)