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參數(shù)資料
| 型號(hào)： | MC68LC302PU16V |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 16.67 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封裝： | TQFP-100 |
| 文件頁(yè)數(shù)： | 167/182頁(yè) |
| 文件大?。?/td> | 618K |
| 代理商： | MC68LC302PU16V |
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Communications Processor (CP)
4-18
MC68LC302 REFERENCE MANUAL
MOTOROLA
Case 2– As each character is assembled, it is stored into a complete byte. Assuming
that the characters are ASCII characters with 7-bit codes, the 8th bit of the byte will con-
tain the parity bit. If the parity is either even or odd, then after receiving an odd character
and an even character, the 8th bit should be different for the odd and even characters.
The parity can be determined by the setting of the parity bit for one of the two charac-
ters. If the 8th bit is always a 1, this is the same as a 7-bit character, no parity and at
least 2 STOP bits or a 7-bit character with force 1 parity. If the 8th bit is always a zero,
then either the character is a 7-bit character with force 0 parity, or the character is a 8-
bit character with no parity.
Case 3– This case is the same as 7-bit character with force 0 parity. The 8th bit of the
byte will always be zero.
Case 4–This case assumes a 8-bit character with the 8th bit of the character equal to a
0 (ASCII character codes define the 8th bit as zero). If the parity is either even or odd,
then after receiving an odd and an even character, a framing error (FE) interrupt should
have been generated for one of them (the interrupt is generated when the parity bit is
zero). The user can determine the parity by which character generated a FE interrupt
(if the odd character did, then the parity is odd). If a framing error occurs on every char-
acter, then the character is 8-bits with force 0 parity. If no framing error occurs, than this
is the same as Case 5.
Case 5– This case is not supported, because it can not be differentiated from 7-bit force
0 parity and 8-bit no parity. If the 9th bit is a 1, then it will be interpreted as a STOP bit.
4.3.9.7 AUTOBAUD RECEPTION ERROR HANDLING PROCEDURE. The
autobaud
controller reports reception error conditions using the autobaud command descriptor. Three
types of errors are supported:
Carrier Detect Lost during reception
When this error occurs and the channel is not programmed to control this line with software,
the channel terminates reception, sets the carrier detect lost (CD) bit in the command
descriptor, and generates the CCR interrupt, if enabled. CCR is bit 3 of the SCCE register.
Overrun Error
When this error occurs, the channel terminates reception, sets the overrun (OV) bit in the
command descriptor, and generates the CCR interrupt, if enabled.
End Of Table Error
When this error occurs, the channel terminates reception, sets the end of table (EOT) bit in
the command descriptor, and generates the CCR interrupt, if enabled.
Any of these errors will cause the channel to abort reception. In order to resume autobaud
operation after an error condition, the M68000 should clear the status bits and issue the
Enter_Baud_Hunt command again.
4.3.9.8 AUTOBAUD TRANSMISSION. The autobaud package supports two methods for
echoing characters or transmitting characters. The two methods are automatic echo and
smart echo.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68LC302RC25B | 32-BIT, 25 MHz, RISC MICROCONTROLLER, CPGA132 |
| MC68LC302CPU16B | 32-BIT, 16.67 MHz, RISC MICROCONTROLLER, PQFP100 |
| MC68LC302PU16VB | 32-BIT, 16.67 MHz, RISC MICROCONTROLLER, PQFP100 |
| MC68LC302CPU20VB | 32-BIT, 20 MHz, RISC MICROCONTROLLER, PQFP100 |
| MC68LC302PU25B | 32-BIT, 25 MHz, RISC MICROCONTROLLER, PQFP100 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68LC302PU16VCT | 功能描述:IC MPU NETWORK 16MHZ 100-LQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:M683xx 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類型:32-位 MPC8xx PowerQUICC 特點(diǎn):- 速度:133MHz 電壓:3.3V 安裝類型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA（25x25） 包裝:托盤 |
| MC68LC302PU20CT | 功能描述:微處理器 - MPU 20MHz 2MIPS RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MC68LC302PU20VCT | 功能描述:IC MPU NETWORK 20MHZ 100-LQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:M683xx 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類型:32-位 MPC8xx PowerQUICC 特點(diǎn):- 速度:133MHz 電壓:3.3V 安裝類型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA（25x25） 包裝:托盤 |
| MC68LC302PU25CT | 功能描述:微處理器 - MPU 25MHz 2.5MIPS RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MC68LK332ACAG16 | 功能描述:32位微控制器 - MCU 32BIT MCU 2KRAM TPU QSM RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT |
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