參數(shù)資料
型號: MC68HC705CJ4FB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, QFP-44
文件頁數(shù): 100/114頁
文件大?。?/td> 4047K
代理商: MC68HC705CJ4FB
GENERAL RELEASE SPECIFICATION
TIMER 2
MC68HC(7)05CJ4
12-2
Rev. 2.1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Figure 12-1. Timer 2 Block Diagram
12.2 Flag Clearing Considerations
In rare instances, clearing any of the timer 2 control and status register (T2CSR)
flag or enable bits could result in vectoring to the reset vector rather than the timer
interrupt vector if the correct precautions are not followed. Do not clear any of the
timer flags or enable bits (for example, TOF, TOFE, RTI, and RTIF) with bit
manipulation instructions.
COP
CLEAR
MC68HC05 INTERNAL BUS
INTERNAL
8-BIT FREE
$09
7-BIT COUNTER
TOF
RTIF
TOFE
RTIE
RT1
INTERRUPT CIRCUIT
$08
TIMER
RUNNING
COUNTER
RTI SELECT
CIRCUIT
COUNTER
REGISTER
STATUS REGISTER
RT0
PROCESSOR
CLOCK
÷ 4
TIMER CONTROL &
OVERFLOW
CIRCUIT
DETECT
COP WATCHDOG
TIMER ( 8)
TO RESET
LOGIC
TO INTERRUPT
LOGIC
8
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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