HD6417032F20V Renesas Electronics America, HD6417032F20V Datasheet - Page 220
HD6417032F20V
Manufacturer Part Number
HD6417032F20V
Description
SH1 ROMLESS LEAD FREE
Manufacturer
Renesas Electronics America
Series
SuperH® SH7030r
Datasheet
1.HD6417034AFI20.pdf
(689 pages)
Specifications of HD6417032F20V
Core Processor
SH-1
Core Size
32-Bit
Speed
20MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
112-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417032F20V
Manufacturer:
TI
Quantity:
201
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Section 9 Direct Memory Access Controller (DMAC)
9.3
When there is a DMA transfer request, the DMAC starts the transfer according to the
predetermined channel priority order; when the transfer end conditions are satisfied, it ends the
transfer. Transfers can be requested in three modes: auto-request, external request, and on-chip
module request. Transfer can be in either single address mode or dual address mode. The bus
mode can be either burst or cycle steal.
9.3.1
After the DMA source address registers (SAR), DMA destination address registers (DAR), DMA
transfer count registers (TCR), DMA channel control registers (CHCR), and DMA operation
register (DMAOR) are set, the DMAC transfers data according to the following procedure:
1. Checks to see if transfer is enabled (DE = 1, DME = 1, TE = 0, NMIF = 0, AE = 0).
2. When a transfer request arrives and transfer is enabled, the DMAC transfers one transfer unit
3. When the specified number of transfer have been completed (when TCR reaches 0), the
4.
Figure 9.2 shows a flowchart of this procedure.
Rev. 7.00 Jan 31, 2006 page 192 of 658
REJ09B0272-0700
of data. (For an auto-request, the transfer begins automatically when the DE bit and DME bit
are set to 1. The TCR value will be decremented by 1.) The actual transfer flows vary by
address mode and bus mode.
transfer ends normally. If the IE bit in CHCR is set to 1 at this time, a DEI interrupt is sent to
the CPU.
When an address error occurs in the DMAC or an NMI interrupt is generated, the transfer is
aborted. Transfers are also aborted when the DE bit in CHCR or the DME bit in DMAOR
changes to 0.
Operation
DMA Transfer Flow
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