HD6417020SVX12I Renesas Electronics America, HD6417020SVX12I Datasheet - Page 224
HD6417020SVX12I
Manufacturer Part Number
HD6417020SVX12I
Description
IC SUPERH MPU ROMLESS 100TQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7020r
Datasheet
1.HD6417020SVX12IV.pdf
(511 pages)
Specifications of HD6417020SVX12I
Core Processor
SH-1
Core Size
32-Bit
Speed
12.5MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
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Quantity:
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9.3.6
The DMA transfer ending conditions vary for individual channels ending and all channels ending
together.
Individual Channel Ending Conditions: There are two ending conditions. A transfer ends when
the value of the channel's DMA transfer count register (TCR) is 0, or when the DE bit of the
channel's CHCR is cleared to 0.
•
•
Conditions for Ending All Channels Simultaneously: Transfers on all channels end when 1) the
NMIF (NMI flag) bit or AE (address error flag) bit is set to 1 in the DMAOR, or 2) when the
DME bit in the DMAOR is cleared to 0.
DREQ
DACK
cycle
Note:
When TCR is 0: When the TCR value becomes 0 and the corresponding channel’s DMA
transfer ends, the transfer end flag bit (TE) is set in the CHCR. If the IE (interrupt enable) bit
has been set, a DMAC interrupt (DEI) is requested to the CPU.
When DE of CHCR is 0: Software can halt a DMA transfer by clearing the DE bit in the
channel’s CHCR. The TE bit is not set when this happens.
Bus
CK
DMA Transfer Ending Conditions
Dual address DREQ level detection, DACK active low, DACK output in read cycle, 1 bus
cycle = 2 states.
CPU
Figure 9.24 DREQ Pin Sampling Timing in Burst Mode
CPU
DMAC(R)
DMAC(W)
DMAC(R)
DMAC(W)
RENESAS 205
CPU
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