HD6417750SBP200 Renesas Electronics America, HD6417750SBP200 Datasheet - Page 672
HD6417750SBP200
Manufacturer Part Number
HD6417750SBP200
Description
IC SUPERH MPU ROMLESS 256BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417750RBP240DV.pdf
(1164 pages)
Specifications of HD6417750SBP200
Core Processor
SH-4
Core Size
32-Bit
Speed
200MHz
Connectivity
EBI/EMI, FIFO, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
28
Program Memory Type
ROMless
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 2.07 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD6417750SBP200
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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Section 14 Direct Memory Access Controller (DMAC)
Operation: Figures 14.12 to 14.22 show the timing in each mode.
1. Cycle Steal Mode
2. Burst Mode, Dual Address Mode, Level Detection
3. Burst Mode, Single Address Mode, Level Detection
Rev.7.00 Oct. 10, 2008 Page 586 of 1074
REJ09B0366-0700
In cycle steal mode, The DREQ sampling timing differs for dual address mode and single
address mode, and for level detection and edge detection of DREQ.
For example, in figure 14.12 (cycle steal mode, dual address mode, level detection), DMAC
transfer begins, at the earliest, four CKIO cycles after the first sampling operation. The second
sampling operation is performed one cycle after the start of the first DMAC transfer write
cycle. If DREQ is not detected at this time, sampling is executed in every subsequent cycle.
In figure 14.13 (cycle steal mode, dual address mode, edge detection), DMAC transfer begins,
at the earliest, five CKIO cycles after the first sampling operation. The second sampling
operation begins from the cycle in which the first DMAC transfer read cycle ends. If DREQ is
not detected at this time, sampling is executed in every subsequent cycle.
For details of the timing for various kinds of memory access, see section 13, Bus State
Controller (BSC).
Figure 14.18 shows the case of cycle steal mode, single address mode, and level detection. In
this case, too, transfer is started, at the earliest, four CKIO cycles after the first DREQ
sampling operation. The second sampling operation is performed one cycle after the start of
the first DMAC transfer bus cycle.
Figure 14.19 shows the case of cycle steal mode, single address mode, and edge detection. In
this case, transfer is started, at the earliest, five CKIO cycles after the first DREQ sampling
operation. The second sampling begins one cycle after the first assertion of DRAK.
In single address mode, the DACK signal is output every DMAC transfer cycle.
DREQ sampling timing in burst mode using dual address mode and level detection is virtually
the same as for cycle steal mode.
For example, in figure 14.14, DMAC transfer begins, at the earliest, four CKIO cycles after the
first sampling operation. The second sampling operation is performed one cycle after the start
of the first DMAC transfer write cycle.
In the case of dual address mode transfer initiated by an external request, the DACK signal can
be output in either the read cycle or the write cycle of the DMAC transfer according to the
specification of the AM bit in CHCR.
DREQ sampling timing in burst mode using single address mode and level detection is shown
in figure 14.20.
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