DF2238RTF6 Renesas Electronics America, DF2238RTF6 Datasheet - Page 271

• Manufacturer Part Number: DF2238RTF6
• Description: MCU 2.2/3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2238RTF6

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 6MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 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: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2238RTF6; HD64F2238RTF6

8.3.4
DMACR controls the operation of each DMAC channel.
The DMA has four DMACR registers: DMACR_0A in channel 0 (channel 0A), DMACR_0B in
channel 0 (channel 0B), DMACR_1A in channel 1 (channel 1A), and DMACR_1B in channel 1
(channel 1B).
In short address mode, channels A and B operate independently, and in full address mode,
channels A and B operate together. The bit functions in the DMACR registers differ according to
the transfer mode.
(1) Short Address Mode
• DMACR_0A, DMACR_0B, DMACR_1A, and DMARC_1B
Bit
7
6
DMA Control Registers (DMACRA and DMACRB)
Bit Name
DTSZ
DTID
Initial Value
0
0
R/W
R/W
R/W
Description
Data Transfer Size
Selects the size of data to be transferred at
one time.
0: Byte-size transfer
1: Word-size transfer
Data Transfer Increment/Decrement
Selects incrementing or decrementing of MAR
after every data transfer in sequential mode or
repeat mode. In idle mode, MAR is neither
incremented nor decremented.
0: MAR is incremented after a data transfer
•
•
1: MAR is decremented after a data transfer
•
•
(Initial value)
When DTSZ = 0, MAR is incremented by 1
When DTSZ = 1, MAR is incremented by 2
When DTSZ = 0, MAR is decremented by
1
When DTSZ = 1, MAR is decremented by
2
Rev. 6.00 Mar. 18, 2010 Page 209 of 982
Section 8 DMA Controller (DMAC)
REJ09B0054-0600