參數(shù)資料
型號(hào): M3455AGC-XXXFP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP52
封裝: 10 X 10 MM, 0.65 MM PITCH, PLASTIC, LQFP-52
文件頁數(shù): 81/150頁
文件大?。?/td> 1818K
代理商: M3455AGC-XXXFP
Rev.1.02
Nov 26, 2008
Page 34 of 146
REJ03B0224-0102
455A Group
Note 1. Rrepresents read enabled, and Wrepresents write enabled.
Note 2. This function is valid only when the timer 1 control start synchronous circuit is selected (I10 =1).
Note 3. Port C output is invalid when CNTR input is selected for the timer 1 count source.
Table 17 Timer control registers
Timer control register PA
at reset : 02
at power down : 02
W
TPAA
PA0
Prescaler control bit
0
Stop (state retained)
1Operating
Timer control register W1
at reset : 00002
at power down : state retained
R/W
TAW1/TW1A
W13
Timer 1 count auto-stop circuit selection bit
(Note 2)
0
Timer 1 count auto-stop circuit not selected
1
Timer 1 count auto-stop circuit selected
W12 Timer 1 control bit
0
Stop (state retained)
1Operating
Timer 1 count source selection bits (Note 3)
W11 W10
Count source
W11
0
PWM signal (PWMOUT)
0
1
Prescaler output (ORCLK)
1
0
Timer 3 underflow signal (T3UDF)
W10
1
CNTR input
Timer control register W2
at reset : 00002
at power down : 00002
R/W
TAW2/TW2A
W23 CNTR pin function control bit
0
CNTR pin output invalid
1
CNTR pin output valid
W22
PWM signal
Hinterval expansion function control bit
0
PWM signal Hinterval expansion function invalid
1
PWM signal Hinterval expansion function valid
W21 Timer 2 control bit
0
Stop (state retained)
1Operating
W20 Timer 2 count source selection bit
0XIN input
1
Prescaler output (ORCLK)/2
Timer control register W3
at reset : 00002
at power down : state retained
R/W
TAW3/TW3A
W33 Timer 3 control bit
0
Stop (initial state)
1
Operating
W32
Timer 3 count value selection bits
W32 W31 W30
Count value
000
Underflow every 512 count
001
Underflow every 1024 count
W31
010
Underflow every 2048 count
011
Underflow every 4096 count
100
Underflow every 8192 count
W30
101
Underflow every 16384 count
110
Underflow every 32768 count
111
Underflow every 65536 count
Timer control register W4
at reset : 00002
at power down : state retained
R/W
TAW4/TW4A
W43 Timer LC control bit
0
Stop (state retained)
1Operating
W42 Timer LC count source selection bit
0Bit 4 (T34) of timer 3
1
System clock (STCK)
W41
CNTR pin output auto-control circuit
selection bit
0
CNTR output auto-control circuit not selected
1
CNTR output auto-control circuit selected
W40 CNTR pin input count edge selection bit
0
Falling edge
1
Rising edge
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