参数资料
型号: M30612E4FP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, OTPROM, 10 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 20 MM, 0.65 MM PITCH, PLASTIC, QFP-100
文件页数: 157/197页
文件大小: 2673K
代理商: M30612E4FP
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页当前第157页第158页第159页第160页第161页第162页第163页第164页第165页第166页第167页第168页第169页第170页第171页第172页第173页第174页第175页第176页第177页第178页第179页第180页第181页第182页第183页第184页第185页第186页第187页第188页第189页第190页第191页第192页第193页第194页第195页第196页第197页
Mitsubishi microcomputers
M16C / 61 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
DMAC
62
Item
Specification
No. of channels
2 (cycle steal method)
Transfer memory space
From any address in the 1M bytes space to a fixed address
From a fixed address to any address in the 1M bytes space
From a fixed address to a fixed address
(Note that DMA-related registers [002016 to 003F16] cannot be accessed)
Maximum No. of bytes transferred
128K bytes (with 16-bit transfers) or 64K bytes (with 8-bit transfers)
DMA request factors (Note)
________
Falling edge of INT0 or INT1 (INT0 can be selected by DMA0, INT1 by DMA1)
Timer A0 to timer A4 interrupt requests
Timer B0 to timer B2 interrupt requests
UART0 transmission and reception interrupt requests
UART1 transmission and reception interrupt requests (UART1 trans-
mission can be selected by DMA0, UART1 reception by DMA1)
UART2 transmission and reception interrupt requests
A-D conversion interrupt requests
Software triggers
Channel priority
DMA0 takes precedence if DMA0 and DMA1 requests are generated simultaneously
Transfer unit
8 bits or 16 bits
Transfer address direction
forward/fixed (forward direction cannot be specified for both source and
destination simultaneously)
Transfer mode
Single transfer mode
After the transfer counter underflows, the DMA enable bit turns to
“0”, and the DMAC turns inactive
Repeat transfer mode
After the transfer counter underflows, the value of the transfer counter
reload register is reloaded to the transfer counter.
The DMAC remains active unless a “0” is written to the DMA enable bit.
DMA interrupt request generation timing When an underflow occurs in the transfer counter
Active
When the DMA enable bit is set to “1”, the DMAC is active.
When the DMAC is active, data transfer starts every time a DMA
transfer request signal occurs.
Inactive
When the DMA enable bit is set to “0”, the DMAC is inactive.
After the transfer counter underflows in single transfer mode
At the time of starting data transfer immediately after turning the DMAC active, re
the value of one of source pointer and destination pointer - the one specified for the
forward direction - is reloaded to the forward direction address pointer,and the value
of the transfer counter reload register is reloaded to the transfer counter.
Writing to register
Registers specified for forward direction transfer are always write enabled.
Registers specified for fixed address transfer are write-enabled when
the DMA enable bit is “0”.
Reading the register
Can be read at any time.
However, when the DMA enable bit is “1”, reading the register set up as the
forward register is the same as reading the value of the forward address pointer.
Table 1.15.1. DMAC specifications
Note: DMA transfer is not effective to any interrupt. DMA transfer is affected neither by the interrupt enable
flag (I flag) nor by the interrupt priority level.
Forward address pointer and
load timing for transfer
counter
相关PDF资料
PDF描述
MK41T56N00 0 TIMER(S), REAL TIME CLOCK, PDIP8
M37531M8-XXXSP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
M38503E6-XXXSP 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP42
M37211M2-XXXSP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP52
MB90F548PF 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100
相关代理商/技术参数
参数描述
M30612E4GP 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30612M4-152FP 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30612M4-155FP 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30612M4A 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30612M4A-417GP 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER