參數(shù)資料
型號： MB90F372PMT-G
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP144
封裝： 0.40 MM PITCH, PLASTIC, LQFP-144
文件頁數(shù)： 100/153頁
文件大?。?/td> 2503K
代理商： MB90F372PMT-G
MB90370 Series
50
3.
Timebase timer
The timebase timer is an 18-bit free-running counter (timebase counter) that counts up in synchronization with
the internal count clock (one-half of the source oscillation).
Features of timebase timer :
Interrupt generated when counter overflow
EI2OS supported
Interval timer function :
An interrupt generated at four different time intervals
Clock supply function :
Four different clock can be selected as watchdog timer’s count clock
Supply clock for oscillation stabilization
(1) Register configuration
(2) Block diagram of timebase timer
15
14
13
12
11
10
9
8
R/W
1
Address: 0000A9H
R/W
0
R/W
0
W
1
R/W
0
R/W
0
Reserved
TBIE
TBOF
TBR
TBC1
TBC0
Timebase Timer Control Register
TBTC
Initial value
Read/write
Bit number
: Unused
OF:Overflow
HCLK: Oscillation clock
*1 Switching of the machine clock from the oscillation clock to the PLL clock
*2 Switching from main clock to sub-clock
OF
Timebase
timer counter
Divide-by
-two HCLK
Power-on reset
Stop mode start
Counter
clear circuit
Interval
timer selector
To watchdog timer
To the oscillation
stabilization wait
time selector in the
clock control
section
×21 ×22 ×23 . . . ×27
. . .
×28 ×29 ×210 ×211 ×212 ×213 ×214 ×215 ×216 ×217 ×218
OF
RESV
—
TBR TBC1 TBC0
—
TBIE TBOF
CKSCR: MCS = 1
0 (*1)
Timebase timer interrupt register (TBTC)
TBOF set
Timebase timer
interrupt signal
#12 (0CH)
SCS = 1
0 (*2)
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