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參數(shù)資料
| 型號(hào)： | M37641F8FP |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | 14 X 20 MM, 0.80 MM, PLASTIC, QFP-80 |
| 文件頁(yè)數(shù)： | 38/140頁(yè) |
| 文件大?。?/td> | 1694K |
| 代理商： | M37641F8FP |
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7641 Group
Rev.4.00
Aug 28, 2006
page 130 of 135
REJ03B0191-0400
USB
When the USB Reset Interrupt Status Flag is kept at “1”, all other
flags in the USB internal registers (addresses 005016 to 005F16)
will return to their reset status. However, the following registers
are not affected by the USB reset: USB control register (address
001316), Frequency synthesizer control register (address
006C16), Clock control register (address 001F16), and USB end-
point-x FIFO register (addresses 006016 to 006416).
When not using the USB function, set the USB Line Driver Supply
Enable Bit of the USB control register (address 001316) to “1” for
power supply to the internal circuits (at Vcc = 5V).
When using an isochronous transfer, set the FLUSH Bit (bit 6 of
address 005916 and bit 6 of address 005A16) as follows:
IN FIFO: use AUTO_FLUSH Bit (bit 6 of address 005816)
OUT FIFO: when OUT_PKT_RDY Bit is “1”, set FLUSH Bit to “1”
When the USB SOF Port Select Bit is “1”, the reference pulse of
83.3 ns (
φ = 12 MHz) is output from the P70/SOF pin and syn-
chronized with the SOF packet.
If a character bit length is 7 bits, bit 7 of the UARTx transmit/re-
ceive buffer register 1 and bits 0 to 7 of the UARTx transmit/
receive buffer register 2 are ignored at transmitting; they are in-
valid at receiving.
If a character bit length is 8 bits, bits 0 to 7 of the UARTx transmit/
receive buffer register 2 are ignored at transmitting; they are in-
valid at receiving.
If a character bit length is 9 bits, bits 1 to 7 of the UARTx transmit/
receive buffer register 2 are ignored at transmitting; they are “0”
at receiving.
The IN_PKT_RDY Bit can be set by software even when using
the AUTO_SET function.
When writing to USB-related registers, set the USB Clock Enable
Bit to “1”, then perform the write after four
φ cycle waits.
When using the MCU at Vcc = 3.3V, set the USB Line Driver Sup-
ply Enable Bit to “0” (line driver disable). Note that setting the
USB Line Driver Current Control Bit (USBC3) doesn’t affect the
USB operation.
Read one packet data from the OUT FIFO before clearing the
OUT_PKT_RDY Flag. If the OUT_PKT_RDY Flag is cleared
while one packet data is being read, the internal read pointer can-
not operate normally.
Use the AUTO_FLUSH Bit (bit 6 of address 005816) in double
buffer mode.
Use the transfer instructions such as LDA and STA to set the reg-
isters: USB interrupt status registers 1, 2 (addresses 005216,
005316); USB endpoint 0 IN control register (address 005916);
USB endpoint x IN control register (address 005916); USB end-
point x OUT control register (address 005A16). Do not use the
read-modify-write instructions such as the SEB or the CLB in-
struction.
When writing to bits shown by Table 32 using the transfer instruc-
tion such as LDA or STA, a value which never affect its bit state
is required. Take the following sequence to change these bits
contents:
(1) Store the register contents onto a variable or a data register.
(2) Change the target bit on the variable or the data register. Si-
multaneously mask the bit so that its bit state cannot be
changed. (See to Table 39.)
(3) Write the value from the variable or the data register to the
register using the transfer instruction such as LDA or STA.
To use the AUTO_SET function for an IN transfer when the
AUTO_SET bit is set to 1, set the FIFO to single buffer mode.
Table 32 Bits of which state might be changed owing to software write
Register name
USB endpoint 0 IN control register
USB endpoint x (x = 1 to 4) IN control register
USB endpoint x (x = 1 to 4) OUT control register
Bit name
IN_PKT_RDY (b1)
DATA_END (b3)
FORCE_STALL (b4)
IN_PKT_RDY (b0)
UNDER_RUN (b1)
OUT_PKT_RDY (b0)
OVER_RUN (b1)
FORCE_STALL (b4)
DATA_ERR (b5)
Value not affecting state (Note)
“0”
“1”
“0”
“1”
Note: Writing this value will not change the bit state, because this value cannot be written to the bit by software.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| M37641F8FP#U0 | 功能描述:IC 740 MCU FLASH 32K 80QFP RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/7600 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(lèi)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(pán) 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| M37641F8HP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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| M37641F8M8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37641F8-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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