參數(shù)資料
型號： M38K07M4L-XXXHP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP64
封裝： 10 X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64
文件頁數(shù)： 102/133頁
文件大?。?/td> 1359K
代理商： M38K07M4L-XXXHP
38K0 Group
Rev.3.00
Oct 05, 2006
page 70 of 129
REJ03B0192-0300
MULTICHANNEL RAM
The 38K0 group has the built-in multichannel RAM including the
small logic circuit (RAM I/F) instead of ordinary RAM.
The multichannel RAM has the USB channel and the EXB channel
in addition to the CPU channel.
The multichannel RAM controls access from CPU, USB and EXB,
synchronizing control with
φ. The USB transfer rate is about 1.5
Mbytes/second. Access to the multichannel RAM is performed at
every about 5.3 clocks in
φ = 8 MHz, or at every about 4 clocks in
φ = 6 MHz. The USB’s access has priority to the EXB’s.
The one wait function (ONW function) of 38000 series CPU is
used internally to control access with the CPU. When receiving an
access request from the USB or the EXB, the multichannel RAM
outputs ONW signal to wait the CPU for one clock, and access of
the USB or the EXB is performed.
If the multichannel RAM is outputting ONW signal while the CPU
is in the state of reading/writing for the RAM area, the CPU read
cycle or write cycle is extended by 1 period of
φ.
Fig. 99 Multichannel RAM timing diagram (no wait)
φ
CPU AD
RD/WR
USB REQ
EXB REQ
ONW
RAM access right
RAM RD/WR
CPU bus cycle
Multichannel RAM
RAM bus cycle
CPU
USB
CPU
RAM area
Except RAM
RAM area
No wait
Except RAM
No RD/WR
φ
CPU AD
RD/WR
USB REQ
EXB REQ
ONW
RAM access right
RAM RD/WR
One wait
2-cycle wait (max.) for EXB
Prior CPU
Prior USB
RAM area
One wait
USB having priority of USB/EXB
simultaneous access
Prior CPU
RAM area
CPU
EXB
CPU
USB
RAM area
EXB
Multichannel RAM
RAM bus cycle
CPU bus cycle
One wait
Prohibiting continuous access of
USB/EXB
CPU accessing RAM at the latter part
One wait
RAM area
Fig. 100 Multichannel RAM timing diagram (one wait)
ONW = “H”
相關(guān)PDF資料
PDF描述
M38K09F8LHP 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP64
M38K09F8LFP 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP64
M38K07M4L-XXXFP 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP64
M38K29F8LFP 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
M38K29F8HP 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M38K09F8LFP 功能描述:IC 740 MCU FLASH 32K 64LQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 產(chǎn)品培訓(xùn)模塊:MCU Product Line Introduction XMEGA Introduction AVR XMEGA USB Connectivity 標(biāo)準(zhǔn)包裝:90 系列:AVR® XMEGA 核心處理器:AVR 芯體尺寸:8/16-位 速度:32MHz 連通性:I²C，IrDA，SPI，UART/USART 外圍設(shè)備:欠壓檢測/復(fù)位，DMA，POR，PWM，WDT 輸入/輸出數(shù):50 程序存儲器容量:192KB（96K x 16） 程序存儲器類型:閃存 EEPROM 大小:4K x 8 RAM 容量:16K x 8 電壓 - 電源 (Vcc/Vdd):1.6 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 16x12b; D/A 2x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:64-TQFP 包裝:托盤 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
M38K09F8LFP#U0 制造商:Renesas Electronics Corporation 功能描述:MCU 8-bit 740 CISC 32KB Flash 5V 64-Pin LQFP Tray 制造商:Renesas Electronics Corporation 功能描述:MCU 3/5V 32K 64-LQFP LEAD FREE - Trays
M38K09F8LHP 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 740 CISC 32KB FLASH 5V 64LQFP - Trays 制造商:Renesas Electronics Corporation 功能描述:IC,microcomputer,USB,LQFP64,12
M38K09F8LHP#U0 功能描述:MCU 3/5V 32K PB-FREE AH570264-LQ RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 產(chǎn)品培訓(xùn)模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標(biāo)準(zhǔn)包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設(shè)備:DMA，POR，PWM，WDT 輸入/輸出數(shù):121 程序存儲器容量:384KB（384K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 34x10b，D/A 2x8b 振蕩器型:內(nèi)部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產(chǎn)品目錄頁面: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 類別:編程器，開發(fā)系統(tǒng) >> 內(nèi)電路編程器、仿真器以及調(diào)試器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 19/Jul/2010 標(biāo)準(zhǔn)包裝:1 系列:* 類型:* 適用于相關(guān)產(chǎn)品:* 所含物品:*
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*