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参数资料
| 型号： | M37641F8FP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 14 X 20 MM, 0.80 MM, PLASTIC, QFP-80 |
| 文件页数： | 84/140页 |
| 文件大小： | 1694K |
| 代理商： | M37641F8FP |
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7641 Group
Rev.4.00
Aug 28, 2006
page 46 of 135
REJ03B0191-0400
USB Interrupts
The USB FCU has two interrupts, USB Function Interrupt and
USB SOF (Start Of Frame) Interrupt.
qUSB Function Interrupt (USBF-INT)
The USBF-INT is usable for the USB data flow control and power
management. The USBF-INT request occurs at data transmit/re-
ceive completion, overrun/underrun, reset, or receiving suspend/
resume signal. To enable this interrupt, the USB function interrupt
enable bit in the interrupt control register A (address 000516) and
the respective bit in the USB interrupt enable registers 1 and 2
(addresses 0005416 and 0005516) must be set to “1”. When set-
ting bit 7 in USB interrupt enable register 2 to “1”, the suspend
interrupt and the resume interrupt are enabled.
Endpoint x (x = 0 to 4) IN interrupt request occurs when the USB
Endpoint x IN interrupt status flag (INTST 0, 2, 4, 6, 8) of USB in-
terrupt status registers 1 and 2 (addresses 005216 and 005316) is
“1”. The USB Endpoint x IN interrupt status flag is set to “1” when
the respective endpoint IN_PKT_RDY bit is “1”.
Endpoint x (x = 0 to 4) OUT interrupt request occurs when the
USB endpoint x OUT interrupt status flag (INTST3, 5, 7, 9) in USB
interrupt status registers 1 and 2 is set to “1”. The USB Endpoint x
OUT interrupt status flag is set to “1” when the respective endpoint
OUT_PKT_RDY flag is “1”.
The overrun/underrun interrupt request occurs when the USB
overrun/underrun interrupt status flag (INTST12) in USB interrupt
status register 2 is set to “1”. This flag is set to “1” when the FIFO
data overruns or underruns in isochronous transfer mode.
The USB reset interrupt request occurs when the USB reset inter-
rupt status flag (INTST13) in USB interrupt status register 2 is set
to “1”. This flag is set when the SE0 is detected on the D+/D- line
for at least 2.5
s. When this situation happens, all USB internal
registers (addresses 005016 to 005F16), except this flag, are ini-
tialized to the default state at reset. The USB reset interrupt is
always enabled.
The suspend/resume interrupt request occurs when either the
USB resume signal interrupt status flag (INTST14) or the USB
suspend signal interrupt status flag (INTST15) in USB interrupt
status register 2 is set to “1”.
The bits in both interrupt status registers 1 and 2 can be cleared
by writing “1” to each bit.
qUSB SOF interrupt
The USB SOF interrupt is usable in isochronous transfers. This in-
terrupt request occurs when an SOF packet is received. To enable
a USB SOF interrupt, set the USB SOF interrupt enable bit of in-
terrupt control register A to “1”.
Suspend/Resume Functions
If no bus activity is detected on the D+/D- line for at least 3 ms, the
USB suspend signal detect flag (SUSPEND) of the USB power
control register (address 005116) and the USB suspend signal in-
terrupt status flag of USB interrupt status register 2 are set to “1”
and the suspend interrupt request occurs. The following procedure
must be executed after pushing the internal registers (A, X, Y ) to
memories during the suspend interrupt process routine.
(1) Clear all bits of USB interrupt status register 1 (address
005216) and USB interrupt status register 2 (address 005316)
to “0”.
(2) Set the USB clock enable bit to “0”. (After disabling the USB
clock, do not write to any of the USB internal registers (ad-
dresses 005016 to 006416), except for the USB control register
(address 001316), clock control register (address 001F16), and
frequency synthesizer control register (address 006C16).
(3) Set the frequency synthesizer enable bit to “0”.
(4) Set the USB line driver current control bit to “1”. (Always keep
the USB line driver current control bit set to “0” during USB
function operations. When operating at Vcc = 3.3 V, this bit
does not need to be set.)
(5) Keep total drive current at 500
A or less.
(6) Disable the timer 1 interrupt.
(7) Disable the timer 2 interrupt. (Disable all the other external in-
terrupts.)
(8) Set the timer 1 interrupt request bit to “0”.
(9) Set the timer 2 interrupt request bit to “0”.
(10) Set the interrupt disable flag (I) to “0”.
(11) Execute the STP instruction.
At this point, the MCU will be in stop mode (suspend mode). Be-
fore executing the STP instruction, make sure to set the USB
function interrupt request bit (bit 0 at address 000216) to “0” and
the USB function interrupt enable bit (bit 0 at address 000516) to
“1”.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M37641F8FP#U0 | 功能描述:IC 740 MCU FLASH 32K 80QFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/7600 标准包装:250 系列:56F8xxx 核心处理器:56800E 芯体尺寸:16-位 速度:60MHz 连通性:CAN，SCI，SPI 外围设备:POR，PWM，温度传感器，WDT 输入/输出数:21 程序存储器容量:40KB（20K x 16） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:6K x 16 电压 - 电源 (Vcc/Vdd):2.25 V ~ 3.6 V 数据转换器:A/D 6x12b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:48-LQFP 包装:托盘 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| M37641F8HP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37641F8HP#U0 | 功能描述:IC 740 MCU FLASH 32K 80LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/7600 产品培训模块:Graphics LCD System and PIC24 Interface Asynchronous Stimulus 标准包装:27 系列:PIC® 24H 核心处理器:PIC 芯体尺寸:16-位 速度:40 MIP 连通性:I²C，SPI，UART/USART 外围设备:欠压检测/复位，POR，PWM，WDT 输入/输出数:21 程序存储器容量:12KB（4K x 24） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):3 V ~ 3.6 V 数据转换器:A/D 10x10b/12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 包装:管件 产品目录页面:648 (CN2011-ZH PDF) 配用:AC164339-ND - MODULE SKT FOR PM3 28SOICDV164033-ND - KIT START EXPLORER 16 MPLAB ICD2 |
| M37641F8M8-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37641F8-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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