參數(shù)資料
型號: EM78P569
廠商: ELAN Microelctronics Corp .
英文描述: 8 - BIT OTP MICRO CONTROLLER
中文描述: 8 -位微控制器檢察官辦公室
文件頁數(shù): 51/58頁
文件大小: 475K
代理商: EM78P569
EM78P569
8-bit OTP Micro-controller
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to be changed without notice.
8/19/2004 V4.4
Data Bus
Data Bus
PRD1
Comparator
TMR1X
MUX
Period
Match
T1P0
T1P1T1EN
PRD2
Comparator
TMR2X
MUX
Period
Match
T2P0 T2P1 T2EN
To PWM1IF
To PWM2IF
reset
reset
1:2
1:8
1:32
1:64
Fosc
1:2
1:8
1:32
1:64
Fosc
*TMR1X = TMR1H + TMR1L;
*TMR2X = TMR2H +TMR2L
Fig.19 TMRX Block Diagram
Fosc: Input clock.
Prescaler ( T1P0 and T1P1/T2P1 and T2P0 ): Options of 1:2, 1:8, 1:32, and 1:64 are defined by TMRX. It is
cleared when any type of reset occurs.
TMR1X and TMR2X (TMR1H/TWR1L and TMR2H/TMR2L ):Timer X register; TMRX is increased until
it matches with PRDX, and then is reset to 0. TMRX cannot be read.
PRDX ( PRD1 and PRD2 ): PWM period register.
ComparatorX ( Comparator 1 and Comparator 2 ): To reset TMRX while a match occurs and the TMRXIF
flag is set at the same time.
When defining TMRX, refer to the related registers of its operation as shown in prescale register. It must be
noted that the PWMX bits must be disabled if their related TMRXs are employed. That is, bit 7 and bit 6 of
the PWMCON register must be set to ‘0’.
Related Control Registers(R5 PAGE3) of TMR1 and TMR2
Bit 7
Bit 6
Bit 5
PWM2E
PWM1E
T2EN
Bit 4
T1EN
Bit 3
T2P1
Bit 2
T2P0
Bit 1
T1P1
Bit 0
T1P0
Timer programming procedures/steps
(1) Load PRDX with the TIMER period.
(2) Enable interrupt function by writing IOCF PAGE0, if required
(3) Load a desired value to PWMCON with the TMRX prescaler value and enable both TMRX and disable
PWMX.
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