參數(shù)資料
型號: MB90F822PFM
廠商: Electronic Theatre Controls, Inc.
英文描述: Scan Test Devices With Octal Bus Transceivers 28-LCCC -55 to 125
中文描述: 16位微控制器專有
文件頁數(shù): 42/98頁
文件大小: 1415K
代理商: MB90F822PFM
MB90820 Series
42
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 (divided by 1/2 of oscillation clock).
Features of timebase timer :
Generates the interruption at counter-overflow
Supports for EI
2
OS
Interval timer function:
Generates an interrupt 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
15
14
13
12
11
10
9
8
R/W
1
Address: 0000A9
H
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
X
X
OF: Overflow
HCLK: Oscillation clock
*1: Switching of the machine clock from the oscillation clock to the PLL clock
*2: Interrupt number
OF
OF
OF
Timebase
timer counter
Divided by
2 of HCLK
Power-on reset
Stop mode start
Counter
clear circuit
Interval
timer selector
To watchdog timer
To the oscillation
setting time selector
in the clock control
section
×
2
1
×
2
2
×
2
3
. . .
. . .
×
2
8
×
2
9
×
2
10
×
2
11
×
2
12
×
2
13
×
2
14
×
2
15
×
2
16
×
2
17
×
2
18
OF
Counter clear
TBR TBC1 TBC0
TBIE TBOF
CKSCR: MCS = 1, 0*
1
Timebase timer
control register
(TBTC)
TBOF clear
TBOF set
Timebase timer
interrupt signal
#36 (24
H
)*
2
相關PDF資料
PDF描述
MB90F822PFV Scan Test Devices With Octal Bus Transceivers 24-CDIP -55 to 125
MB90F823PF Scan Test Devices With Octal Bus Transceivers 28-LCCC -55 to 125
MB90F823PFM Scan Test Devices With Octal Bus Transceivers 24-CDIP -55 to 125
MB90F823PFV 10-Bit Buffers/Drivers With 3-State Outputs 28-LCCC -55 to 125
MB90822PFV 10-Bit Buffers/Drivers With 3-State Outputs 24-CFP -55 to 125
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