HD64F3048BF25 Renesas Electronics America, HD64F3048BF25 Datasheet - Page 250

• Manufacturer Part Number: HD64F3048BF25
• Description: IC H8 MCU FLASH 128K 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048BF25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 8 DMA Controller
8.4.2
I/O mode can be selected independently for each channel.
One byte or word is transferred at each transfer request in I/O mode. A designated number of these
transfers are executed. One address is specified in the memory address register (MAR), the other
in the I/O address register (IOAR). The direction of transfer is determined automatically from the
activation source. The transfer is from the address specified in IOAR to the address specified in
MAR if activated by an SCI channel 0 receive-data-full interrupt, and from the address specified
in MAR to the address specified in IOAR otherwise.
Table 8.6 indicates the register functions in I/O mode.
Table 8.6
Register
Legend:
MAR: Memory address register
IOAR: I/O address register
ETCR: Execute transfer count register
MAR and IOAR specify the source and destination addresses. MAR specifies a 24-bit source or
destination address, which is incremented or decremented as each byte or word is transferred.
IOAR specifies the lower 8 bits of a fixed address. The upper 16 bits are all 1s. IOAR is not
incremented or decremented.
Rev. 3.00 Sep 27, 2006 page 222 of 872
REJ09B0325-0300
23
23
All 1s
I/O Mode
15
MAR
Register Functions in I/O Mode
ETCR
7
IOAR
0
0
0
Activated by
SCI0 Receive-
Data-Full
Interrupt
Destination
address
register
Source
address
register
Transfer
counter
Function
Other
Activation
Source
address
register
Destination
address
register
Transfer
counter
Initial Setting
Destination or
source address
Source or
destination
address
Number of
transfers
Operation
Incremented or
decremented
once per
transfer
Held fixed
Decremented
once per
transfer until
H'0000 is
reached and
transfer ends