參數(shù)資料
型號(hào)： MB91F355APMT
元件分類： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 50 MHz, RISC MICROCONTROLLER, PQFP176
封裝： 0.50 MM PITCH, LEAD FREE, PLASTIC, LQFP-176
文件頁(yè)數(shù)： 92/112頁(yè)
文件大?。?/td> 1095K
代理商： MB91F355APMT
MB91350A Series
80
17. DMAC (DMA Controller)
(1) Description
This module realize direct memory access (DMA) transfer with the FR family device.
DMA transfer controlled by this module enables many types of data transfer to be performed at high speed
without CPU intervention, thereby improving system performance.
Hardware configuration
This model consists mainly of the following components:
Five independent DMA channels
5 ch independent access control circuits
32-bit address register (Supports reloading: 2 per channel)
16-bit transfer count register (Supports reloading: 1 per channel)
4-bit block count register (1 per channel)
External transfer request input pins: DREQ0, DREQ1, DREQ2 (ch0, ch1, ch2 only)
External transfer request acceptance output pins: DACK0, DACK1, DACK2 (ch0, ch1,ch2 only)
DMA end output pins: DEOP0, DEOP1, DEOP2 (ch0, ch1, ch2 only)
(ch3 only) fly-by transfer (memory to I/O, I/O to memory)
Two-cycle transfer
Main function
This module has the following major functions for data transfer:
Supports independent data transfer for multiple channels (5 channels)
(1) Priority order (ch.0
> ch.1 > ch.2 > ch.3 > ch.4)
(2) Order can be reversed for ch0 and ch1
(3) DMAC activation triggers
External dedicated pin input (edge detection/level detection: ch.0 to ch.2 only)
Internal peripheral request (Interrupt request sharing, including external interrupts)
Software request (register write)
(4) Transmission mode
Demand transfer, burst transfer, step transfer, or block transfer
Addressing mode: 32-bit full addressing (increment, decrement, or fixed)
(address increment can be in the range - 255 to + 255)
Data length: Byte, halfword, or word
Single-shot or reload operation selectable
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB91F355APMT-002 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
MB91F355APMT-GE1 制造商:FUJITSU 功能描述:IC 16BIT MCU 5V SMD LQFP176
MB91F356B 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
MB91F356BPMT 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
MB91F357B 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
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