HD64F7051SFJ20V Renesas Electronics America, HD64F7051SFJ20V Datasheet - Page 211
HD64F7051SFJ20V
Manufacturer Part Number
HD64F7051SFJ20V
Description
MCU 5V 256K J-TEMP PB-FREE QFP-1
Manufacturer
Renesas Electronics America
Series
SuperH® SH7050r
Datasheet
1.HD64F7050SFJ20V.pdf
(843 pages)
Specifications of HD64F7051SFJ20V
Core Processor
SH-2
Core Size
32-Bit
Speed
20MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, WDT
Number Of I /o
102
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
10K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
168-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
HD64F7051SFJ20V
Manufacturer:
RENESAS
Quantity:
101
Part Number:
HD64F7051SFJ20V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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9.3.13
The space addressed by the DMAC is 3-cycle space. Therefore, when the CPU becomes the bus
master and accesses the DMAC, a minimum of three basic clock (CLK) cycles are required for
one bus cycle. Also, since the DMAC is located in word space, while a word-size access to the
DMAC is completed in one bus cycle, a longword-size access is automatically divided into two
word accesses, requiring two bus cycles (six basic clock cycles). These two bus cycles are
executed consecutively; a different bus cycle is never inserted between the two word accesses.
This applies to both write accesses and read accesses.
9.4
9.4.1
In this example, on-chip serial communication interface channel 0 (SCI0) received data is
transferred to external memory using the DMAC channel 3.
Table 9.7 indicates the transfer conditions and the setting values of each of the registers.
Table 9.7
Transfer Conditions
Transfer source: RDR0 of on-chip SCI0
Transfer destination: external memory
Transfer count: 64 times
Transfer source address: fixed
Transfer destination address: incremented
Transfer request source: SCI0 (RDR0)
Bus mode: cycle steal
Transfer unit: byte
Interrupt request generation at end of transfer
Channel priority ranking: 0
DMAC Access from CPU
Examples of Use
Example of DMA Transfer between On-Chip SCI and External Memory
Transfer Conditions and Register Set Values for Transfer between On-chip SCI
and External Memory
1
2
3
Section 9 Direct Memory Access Controller (DMAC)
Register
SAR0
DAR0
DMATCR0
CHCR0
DMAOR
Rev. 5.00 Jan 06, 2006 page 189 of 818
H'00400000
H'0001
Value
H'FFFF81A5
H'00000040
H'00004905
REJ09B0273-0500
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