HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 253
HD6412332
Manufacturer Part Number
HD6412332
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412332.pdf
(1244 pages)
Available stocks
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Quantity
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Part Number:
HD6412332FC25V
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ALLEGRO
Quantity:
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Block Transfer Mode
ETCRA
ETCRB
In block transfer mode, ETCRAL functions as an 8-bit block size counter and ETCRAH holds the
block size. ETCRAL is decremented each time a 1-byte or 1-word transfer is performed, and when
the count reaches H'00, ETCRAL is loaded with the value in ETCRAH. So by setting the block
size in ETCRAH and ETCRAL, it is possible to repeatedly transfer blocks consisting of any
desired number of bytes or words.
ETCRB functions in block transfer mode, as a 16-bit block transfer counter. ETCRB is
decremented by 1 each time a block is transferred, and transfer ends when the count reaches
H'0000.
Block Size Storage (ETCRAH)
Bit
Initial value :
R/W
Block Size Counter (ETCRAL)
Bit
Initial value :
R/W
Block Transfer Counter
Bit
Initial value :
R/W
:
:
:
:
:
: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
15
*
R/W
R/W
15
7
*
*
14
*
13
*
R/W
R/W
14
6
*
*
12
*
11
*
R/W
R/W
13
5
*
*
10
*
9
*
R/W
R/W
12
*
4
*
8
*
Rev.4.00 Sep. 07, 2007 Page 223 of 1210
7
*
R/W
R/W
11
3
*
*
6
*
5
*
R/W
R/W
10
2
*
*
4
*
REJ09B0245-0400
3
*
R/W
R/W
9
*
1
*
2
*
*: Undefined
*: Undefined
1
*
R/W
R/W
8
0
*
*
0
*
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