DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 230

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 8 DMA Controller
Rev. 3.00 Mar 21, 2006 page 200 of 814
REJ09B0302-0300
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Block transfer mode
ETCRA
ETCRB
In block transfer mode, ETCRAH functions as an 8-bit block size counter. ETCRAL holds the
initial block size. ETCRAH is decremented by 1 each time one byte or word is transferred.
When the count reaches H'00, ETCRAH is reloaded from ETCRAL. Blocks consisting of an
arbitrary number of bytes or words can be transferred repeatedly by setting the same initial
block size value in ETCRAH and ETCRAL.
In block transfer mode ETCRB functions as a 16-bit block transfer counter. ETCRB is
decremented by 1 each time one block is transferred. The transfer ends when the count reaches
H'0000.
The ETCRs are not initialized by a reset or in standby mode.
R/W
15
R/W
R/W
7
7
R/W
14
R/W
13
R/W
R/W
6
6
R/W
12
R/W
11
R/W
R/W
5
5
R/W
10
Block transfer counter
R/W
Block size counter
9
Initial block size
Undetermined
R/W
Undetermined
R/W
Undetermined
4
4
ETCRAH
R/W
ETCRAL
8
R/W
7
R/W
R/W
3
3
R/W
6
R/W
5
R/W
R/W
2
2
R/W
4
R/W
3
R/W
R/W
1
1
R/W
2
R/W
1
R/W
R/W
0
0
R/W
0