參數(shù)資料
型號(hào)： MC68HC908JL8CSP
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP32
封裝： SDIP-32
文件頁數(shù)： 33/56頁
文件大?。?/td> 648K
代理商： MC68HC908JL8CSP
MC68HC908JL8SM/D
Serial Communications Interface Module (SCI)
MC68HC908JL8MC68HC908JK8
Software latency may allow an overrun to occur between reads of SCS1 and
SCDR in the flag-clearing sequence. Figure 31 shows the normal flag-
clearing sequence and an example of an overrun caused by a delayed flag-
clearing sequence. The delayed read of SCDR does not clear the OR bit
because OR was not set when SCS1 was read. Byte 2 caused the overrun
and is lost. The next flag-clearing sequence reads byte 3 in the SCDR
instead of byte 2.
In applications that are subject to software latency or in which it is important
to know which byte is lost due to an overrun, the flag-clearing routine can
check the OR bit in a second read of SCS1 after reading the data register.
NF — Receiver Noise Flag Bit
1 = Noise detected
FE — Receiver Framing Error Bit
1 = Framing error detected
Figure 31. Flag Clearing Sequence
PE — Receiver Parity Error Bit
1 = Parity error detected
BYTE 1
NORMAL FLAG CLEARING SEQUENCE
READ SCS1
SCRF = 1
READ SCDR
BYTE 1
SC
R
F
=
1
SC
R
F
=
1
BYTE 2
BYTE 3
BYTE 4
OR = 0
READ SCS1
SCRF = 1
OR = 0
READ SCDR
BYTE 2
SC
R
F
=
0
READ SCS1
SCRF = 1
OR = 0
S
CRF
=
1
S
CRF
=
0
READ SCDR
BYTE 3
SC
R
F
=
0
BYTE 1
READ SCS1
SCRF = 1
READ SCDR
BYTE 1
S
CRF
=
1
S
CRF
=
1
BYTE 2
BYTE 3
BYTE 4
OR = 0
READ SCS1
SCRF = 1
OR = 1
READ SCDR
BYTE 3
DELAYED FLAG CLEARING SEQUENCE
OR
=
1
S
CRF
=
1
OR
=
1
S
CRF
=
0
OR
=
1
S
CRF
=
0
OR
=
0
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關(guān)PDF資料
PDF描述
MC68HC908JL8MFA 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
MC68HC908JK8CP 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP20
MC68HC908KX8VDW 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
MC68HC908KX2MDW 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
MC68HC908KX8MDW 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC908JL8CSPE 功能描述:8位微控制器 -MCU MCU 8K FLASH 8 BIT RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HC908JL8MFAE 功能描述:8位微控制器 -MCU MCU 8K FLASH 8 BIT ADC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HC908JL8MSPE 制造商:Freescale Semiconductor 功能描述:MCU - Rail/Tube
MC68HC908KX2CDW 功能描述:IC MCU 2K FLASH 8MHZ 16-SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC08 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MC68HC908KX2CP 功能描述:IC MCU 2K FLASH 8MHZ SCI 16-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC08 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
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