參數(shù)資料
型號： M38K29F8LFP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
封裝： 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64
文件頁數(shù)： 139/151頁
文件大?。?/td> 1403K
代理商： M38K29F8LFP
38K2 Group
Rev.3.00
Oct 15, 2006
page 88 of 147
REJ03B0193-0300
MULTICHANNEL RAM
The 38K2 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. 129 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. 130 Multichannel RAM timing diagram (one wait)
ONW = “H”
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M38K29F8LHP 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
M38K29F8LHP#U0 功能描述:IC 740/38K2 MCU FLASH 64-LQFP 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
M38K29F8LHP#UO 制造商:Renesas Electronics Corporation 功能描述:
M38K29T-ADF 功能描述:DEV TEMPORARY TARGET BOARD FOR M RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 配件 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 標(biāo)準(zhǔn)包裝:1 系列:- 附件類型:USB 至 1-Wire? RJ11 適配器 適用于相關(guān)產(chǎn)品:1-Wire? 設(shè)備 產(chǎn)品目錄頁面:1429 (CN2011-ZH PDF)
M38K29T-PAC 制造商:Renesas Electronics Corporation 功能描述:DEV SIMPLE TOOL SYSTEM PKG FOR 38000/38K - Bulk
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