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參數(shù)資料
| 型號： | M30245FCGP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | PLASTIC, LQFP-100 |
| 文件頁數(shù)： | 216/244頁 |
| 文件大?。?/td> | 3535K |
| 代理商： | M30245FCGP |
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Universal Serial Bus
73
Specifications in this manual are tentative and subject to change
Rev. E
MITSUBISHI MICROCOMPUTERS
M30245 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
EP0 OUT FIFO with control write continuous transfer mode enabled
The USB FCU updates the OUT_BUF_RDY flag to “1” after:
It has successfully received a data set equal to 128 bytes or a short packet from the host
OR
A control write status phase has started but there are pending OUT data packets in the buffer.
The CPU writes “1” to CLR_OUT_BUF_RDY after the data set has been unloaded from the FIFO by the
CPU (updates the OUT_BUF_RDY flag to “0”).
Special note when using continuous transfer mode in control read request
In continuous transfer mode, the CPU can write multiple data packets to the data buffer before setting
the SET_IN_BUF_RDY to “1”. The CPU must write the last data packet separately to the data buffer and
sets the SET_DATA_END bit. For example, if the buffer size=128 bytes, MAXP= 8 bytes, and the CPU
sends 64 bytes of data to the host, the CPU does the following:
Writes 7x8=56 bytes to the buffer;
Sets SET_IN_BUF_RDY=1;
After the 7 packets are successfully sent to host, the IN_BUF_RDY flag changes from “1” to “0”;
Writes the last 8 bytes of data to the buffer;
Sets SET_IN_BUF_RDY=”1” and SET_DATA_END to “1”;
The CPU should not write all 64 bytes of data, and set the SET_IN_BUF_RDY and SET_DATA_END bits
to “1” at the same time.
Special note when using continuous transfer mode in control write request
Because the buffer can hold multiple data packets before generating an interrupt, two special cases
should be taken into consideration:
1. The SETUP_END flag usually indicates a premature completion of a control transfer. However, if the
data field of a control write is a multiple of MAXP but not a multiple of the buffer size, the SETUP_END
flag may be set without causing a premature completion of transfer. For example, if MAXP =8, buffer size
= 128, wLength = 192 (a multiple of MAXP but not the buffer size), the following occurs in continuous
mode:
After receiving 16 8-byte packets, (128 bytes) from the host, an EP0 interrupt is generated to indicate to
the CPU that data unloading can start.
When the host completes sending the remainder of the data field (eight 8-byte packets) an EP0 interrupt
is not generated because the buffer is not full and there is no short packet.
When the status phase starts (the host sends an IN token), OUT_BUF_RDY and SETUP_END are set.
The SETUP_END is set because the CPU is unaware of the end of the data phase, thus DATA_END is
not set. Whenever DATA_END is not set and the status stage starts, the protocol state machine will treat
it as a premature completion (data field is less than wLength) and sets the SETUP_END bit.
It is the users responsibility to determine the difference between a premature completion and a normal
completion (data field equals the wLength) when the CPU acknowledges a SETUP_END flag in continu-
ous mode.
2. The device usually returns a stall handshake when the host sends more data than specified in the
wLength field. However, if a host sends more data than specified in wLength in the middle of a continu-
ous transfer burst, the USB FCU returns ACK to every packet it receives if there are no errors. In this
case, when the firmware detects this kind of protocol error, it must set CLR_OUT_PKT_RDY to “1” and
set SEND_STALL to “1” so that the USB FCU returns STALL in the subsequent data or status phase. For
example, if MAXP = 8, buffer size = 128, wLength = 26, the following may occur:
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| M30625MGM-XXXGP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80 |
| M30621MCM-XXXGP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80 |
| M30621FCMGP | 16-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP80 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M30245FCGP#U1 | 功能描述:IC M16C/24 MCU FLSH 128K 100LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M16C™ M16C/20 標(biāo)準(zhǔn)包裝:1 系列:87C 核心處理器:MCS 51 芯體尺寸:8-位 速度:16MHz 連通性:SIO 外圍設(shè)備:- 輸入/輸出數(shù):32 程序存儲器容量:8KB（8K x 8） 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4 V ~ 6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:外部 工作溫度:0°C ~ 70°C 封裝/外殼:44-DIP 包裝:管件 其它名稱:864285 |
| M30245FC-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30245FC-XXXGF | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30245FC-XXXGP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30245FG | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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