- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45022 > M306H3MC-XXXFP 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP116 PDF資料下載
參數(shù)資料
| 型號： | M306H3MC-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP116 |
| 封裝： | 20 X 20 MM, 0.65 MM PITCH, PLASTIC, LQFP-116 |
| 文件頁數(shù)： | 111/135頁 |
| 文件大?。?/td> | 2583K |
| 代理商： | M306H3MC-XXXFP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁當(dāng)前第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁
Rev.1.00
2004.03.23
page 77 of 320
M306H3MC-XXXFP/FCFP
2.9 DMAC
The DMAC (Direct Memory Access Controller) allows data to be transferred without the CPU interven-
tion. Two DMAC channels are included. Each time a DMA request occurs, the DMAC transfers one (8 or
16-bit) data from the source address to the destination address. The DMAC uses the same data bus as
used by the CPU. Because the DMAC has higher priority of bus control than the CPU and because it
makes use of a cycle steal method, it can transfer one word (16 bits) or one byte (8 bits) of data within
a very short time after a DMA request is generated. Figure 2.9.1 shows the block diagram of the DMAC.
Table 2.9.1 shows the DMAC specifications. Figures 2.9.2 to 2.9.4 show the DMAC-related registers.
Figure 2.9.1. DMAC Block Diagram
Data bus low-order bits
DMA latch high-order bits
DMA latch low-order bits
DMA0 source pointer SAR0(20)
DMA0 destination pointer DAR0 (20)
DMA0 forward address pointer (20) (Note)
Data bus high-order bits
Address bus
DMA1 destination pointer DAR1 (20)
DMA1 source pointer SAR1 (20)
DMA1 forward address pointer (20) (Note)
DMA0 transfer counter reload register TCR0 (16)
DMA0 transfer counter TCR0 (16)
DMA1 transfer counter reload register TCR1 (16)
DMA1 transfer counter TCR1 (16)
(addresses 002916, 002816)
(addresses 003916, 003816)
(addresses 002216 to 002016)
(addresses 002616 to 002416)
(addresses 003216 to 003016)
(addresses 003616 to 003416)
Note: Pointer is incremented by a DMA request.
A DMA request is generated by a write to the DMiSL register (i = 0 to 1)’s DSR bit, as well as by an interrupt
request which is generated by any function specified by the DMiSL register’s DMS and DSEL3 to DSEL0
bits. However, unlike in the case of interrupt requests, DMA requests are not affected by the I flag and the
interrupt control register, so that even when interrupt requests are disabled and no interrupt request can be
accepted, DMA requests are always accepted. Furthermore, because the DMAC does not affect interrupts,
the interrupt control register’s IR bit does not change state due to a DMA transfer.
A data transfer is initiated each time a DMA request is generated when the DMiCON register’s DMAE bit =
“1” (DMA enabled). However, if the cycle in which a DMA request is generated is faster than the DMA
transfer cycle, the number of transfer requests generated and the number of times data is transferred may
not match. For details, refer to “DMA Requests”.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M306H3FCFP | 16-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP116 |
| M306H5MG-XXXFP | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP116 |
| M306H5MG-XXXFP | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP116 |
| M306H5FGFP | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP116 |
| M306N4FGVFP | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP100 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M306H5FGFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER |
| M306H5FGFP#U0 | 功能描述:IC M16C/6H MCU FLASH 116LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M16C™ M16C/60 標(biāo)準(zhǔn)包裝:160 系列:S08 核心處理器:S08 芯體尺寸:8-位 速度:40MHz 連通性:I²C，LIN，SCI，SPI 外圍設(shè)備:LCD，LVD，POR，PWM，WDT 輸入/輸出數(shù):53 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1.9K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 12x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:64-LQFP 包裝:托盤 |
| M306H5MC-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER |
| M306H5MG-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER |
| M306H7FGFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。