參數(shù)資料
型號: MC68HC05RC18FN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 104/124頁
文件大?。?/td> 457K
代理商: MC68HC05RC18FN
NON-DISCLOSURE
AGREEMENT
REQUIRED
Carrier Modulator Transmitter (CMT)
General Release Specification
MC68HC05RC18 Rev. 2.0
80
Carrier Modulator Transmitter (CMT)
MOTOROLA
9.5.3 Extended Space Operation
In either time or FSK mode, the space period can be made longer than
the maximum possible value of SBUFF. Setting the EXSPC bit in the
MCSR will force the modulator to treat the next modulation period
(beginning with the next load of MBUFF/SBUFF) as a space period
equal in length to the mark and space counts combined. Subsequent
modulation periods will consist entirely of these extended space periods
with no mark periods. Clearing EXSPC will return the modulator to
standard operation at the beginning of the next modulation period. To
calculate the length of an extended space in time mode, use the
equation:
Where the subscripts 1, 2, ... n refer to the modulation periods that
elapsed while the EXSPC bit was set.
Similarly, to calculate the length of an extended space in FSK mode, use
the equation:
Where fcg is the frequency output from the carrier generator. For an
example of extended space operation, see Figure 9-6.
NOTE:
The EXSPC feature can be used to emulate a zero mark event.
Figure 9-6. Extended Space Operation
((SBUFF1)+(MBUFF2+1+SBUFF2) +... (MBUFFn+1+SBUFFn)) x 8
fosc
texspace =
secs
((SBUFF1)+(MBUFF2+1+SBUFF2)+... (MBUFFn+1+SBUFFn))
fcg
texspace =
secs
SET EXSPC
CLEAR EXSPC
相關(guān)PDF資料
PDF描述
MC68HC05RC18DW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05SR3B 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP42
MC68HC705SR3CP 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDIP40
MC68HC705SR3CFB 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP44
MC68HC705SR3CB 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDIP42
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05RC8 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05RC8DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05RC8FN 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05RC8P 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05SC24 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Secure 8-bit microcomputer with EEPROM