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参数资料
| 型号： | M38K09F8LHP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP64 |
| 封装： | 10 X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64 |
| 文件页数： | 52/133页 |
| 文件大小： | 1359K |
| 代理商： | M38K09F8LHP |
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38K0 Group
Rev.3.00
Oct 05, 2006
page 25 of 129
REJ03B0192-0300
USB FUNCTION
38K0 Group is equipped with a USB function control circuit
(USBFCC) that enables effective interfacing with the host-PC.
This circuit is in compliance with USB2.0’s Full-Speed Transfer
Mode (12 Mbps, equivalent to USB1.1). This circuit also supports
all four transfer-types specified in the standard USB specification.
The USBFCC has four endpoints that can select its transfer type.
Although Endpoint 0 is fixed to Control Transfer, the Endpoints 1
to 3 can be set to Interrupt Transfer, Bulk Transfer, or Isochronous
Transfer.
A dedicated circuit automatically performs stage management for
Control Transfer and packet management for transactions, which
are necessary for matching of data transmit/receive timing, error
detection, and retry after error. This dedicated control circuit en-
ables the user to develop a program or timing design very easily.
Each endpoint can be programmed for data transfer conditions so
that the endpoints are adaptive for all USB device class transfer
systems.
The data buffer of each endpoint can be assigned to any area in
the multi-channel RAM. This feature offers highly efficient memory
usage by avoiding re-buffering and enabling simple data modifica-
tion.
The transmit/receive data is directly transferred to the data buffer
via the control circuit (direct RAM access type) without disturbing
the CPU operation. This mechanism enables the CPU to transfer
data smoothly with no drop in performance. In addition to this
buffer function, a double-buffer setting will keep a re-buffering stall
at a minimum and increase the overall data throughput (max. 64
bytes X 2 channels).
As other special signals control, the endpoints have detection
functions for the USB bus reset signal, resume signal, suspend
signal, and SOF signal, and also have a remote wake-up signal
transmit function.
When completing data transfer or receiving a special signal, the
endpoint generates the corresponding interrupt to the CPU (3 vec-
tors/18 factors).
With all this essential yet comprehensive built-in hardware, your
system using the 38K0 group will be ready for any USB applica-
tion that comes its way.
USB Data Transfer
The USB specification promises 12 Mbps data transfer in the full-
speed mode, that is equivalent to 1.5 M bytes per second of data
transactions.
However, in USB data transfer, bit-stuffing may be executed de-
pending on the bit patterns of the transfer data, possibly resulting
in 1-byte data (normally 8 bits) handled as up to 10 bits.
Because USB uses asynchronous transfers, the clock cycle of the
USB internal reference clock may change to adjust to the clock
phase. Therefore, the access timing of the USBFCC for the multi-
channel RAM will change owing to the frequency of internal clock
φ:
When the USBFCC is operating at
φ =8 MHZ, access for a normal
transfer is performed every 5 to 6 cycles and access for a bit-stuff-
ing transfer is performed in up to 7 cycles.
If the EXB function is enabled in the above conditions, this func-
tion generates a maximum wait of 1 clock cycle, so that the
access is performed every 4 to 8 cycles.
When operating at
φ = 6MHZ, a normal access is performed every
4 cycles. If the clock-phase correction of the reference clock oc-
curs, access is performed every 3 to 5 cycles.
If bit stuffing occurs at this clock rate, the access cycle will be ex-
tended to up to 6 cycles. When the EXB function that generates a
maximum 1-wait cycle is used in this condition, the access cycle
will be 2 (min.) to 7 (max.) cycles.
Fig. 23 USB function overview
Interrupt request
Data transmit/Receive path
[Direct RAM Access Type]
38K0 Group MCU
USB Bus
(USB-Host)
Exter
nal
MCU
CPU
Program ROM
USB
Multi-channel RAM
Built-in Peripheral
Functions
External Bus Interface
(EXB)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M38K09F8LHP#U0 | 功能描述:MCU 3/5V 32K PB-FREE AH570264-LQ RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 产品培训模块:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 标准包装:1 系列:M16C™ M32C/80/87 核心处理器:M32C/80 芯体尺寸:16/32-位 速度:32MHz 连通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外围设备:DMA，POR，PWM，WDT 输入/输出数:121 程序存储器容量:384KB（384K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:24K x 8 电压 - 电源 (Vcc/Vdd):3 V ~ 5.5 V 数据转换器:A/D 34x10b，D/A 2x8b 振荡器型:内部 工作温度:-20°C ~ 85°C 封装/外壳:144-LQFP 包装:托盘 产品目录页面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| M38K09RFS | 功能描述:EMULATOR MCU FOR 38K0 GROUP RoHS:否 类别:编程器，开发系统 >> 内电路编程器、仿真器以及调试器 系列:- 产品变化通告:Development Systems Discontinuation 19/Jul/2010 标准包装:1 系列:* 类型:* 适用于相关产品:* 所含物品:* |
| M38K29F8LHP | 功能描述:IC 740 MCU FLASH 32K 64LQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 产品培训模块:MCU Product Line Introduction XMEGA Introduction AVR XMEGA USB Connectivity 标准包装:90 系列:AVR® XMEGA 核心处理器:AVR 芯体尺寸:8/16-位 速度:32MHz 连通性:I²C，IrDA，SPI，UART/USART 外围设备:欠压检测/复位，DMA，POR，PWM，WDT 输入/输出数:50 程序存储器容量:192KB（96K x 16） 程序存储器类型:闪存 EEPROM 大小:4K x 8 RAM 容量:16K x 8 电压 - 电源 (Vcc/Vdd):1.6 V ~ 3.6 V 数据转换器:A/D 16x12b; D/A 2x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:64-TQFP 包装:托盘 配用:ATSTK600-RC14-ND - STK600 SOCKET/ADAPTER 64TQFPATSTK600-TQFP64-ND - STK600 SOCKET/ADAPTER 64-TQFPATAVRONEKIT-ND - KIT AVR/AVR32 DEBUGGER/PROGRMMRATAVRISP2-ND - PROGRAMMER AVR IN SYSTEM |
| M38K29F8LHP#U0 | 功能描述:IC 740/38K2 MCU FLASH 64-LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 产品培训模块:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 标准包装:1 系列:M16C™ M32C/80/87 核心处理器:M32C/80 芯体尺寸:16/32-位 速度:32MHz 连通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外围设备:DMA，POR，PWM，WDT 输入/输出数:121 程序存储器容量:384KB（384K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:24K x 8 电压 - 电源 (Vcc/Vdd):3 V ~ 5.5 V 数据转换器:A/D 34x10b，D/A 2x8b 振荡器型:内部 工作温度:-20°C ~ 85°C 封装/外壳:144-LQFP 包装:托盘 产品目录页面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| M38K29F8LHP#UO | 制造商:Renesas Electronics Corporation 功能描述: |
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