D12350F20IV Renesas Electronics America, D12350F20IV Datasheet - Page 288
D12350F20IV
Manufacturer Part Number
D12350F20IV
Description
IC H8S/2350 MCU 4.5/5.5V 0+K I-T
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Specifications of D12350F20IV
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
87
Program Memory Type
ROMless
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
128-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
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Section 7 DMA Controller (DMAC)
7.5.7
In block transfer mode, transfer is performed with channels A and B used in combination. Block
transfer mode can be specified by setting the FAE bit in DMABCR and the BLKE bit in
DMACRA to 1.
In block transfer mode, a transfer of the specified block size is carried out in response to a single
transfer request, and this is executed the specified number of times. The transfer source is
specified by MARA, and the transfer destination by MARB. Either the transfer source or the
transfer destination can be selected as a block area (an area composed of a number of bytes or
words).
Table 7.11 summarizes register functions in block transfer mode.
Table 7.11 Register Functions in Block Transfer Mode
Legend:
MARA: Memory address register A
MARB: Memory address register B
ETCRA: Transfer count register A
ETCRB: Transfer count register B
Rev. 3.00 Sep 15, 2006 page 252 of 988
REJ09B0330-0300
Register
23
23
15
Block Transfer Mode
MARA
MARB
ETCRB
7
7
ETCRAH
ETCRAL
0
0
0
0
0
Source address
register
Destination
address register
Holds block
size
Block size
counter
Block transfer
counter
Function
Initial Setting
Start address of
transfer source
Start address of
transfer destination
Block size
Block size
Number of block
transfers
Operation
Incremented/decremented
every transfer, or fixed
Incremented/decremented
every transfer, or fixed
Fixed
Decremented every
transfer; ETCRH value
copied when count
reaches H'00
Decremented every block
transfer; transfer ends
when count reaches
H'0000
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