DF2238RTF6 Renesas Electronics America, DF2238RTF6 Datasheet - Page 355

• 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

9.5
Register information is stored in on-chip RAM. When activated, the DTC reads register
information in on-chip RAM and transfers data. After the data transfer, the DTC writes updated
register information back to the memory.
The pre-storage of register information in memory makes it possible to transfer data over any
required number of channels. The transfer mode can be specified as normal, repeat, and block
transfer mode. Setting the CHNE bit in MRB to 1 makes it possible to perform a number of
transfers with a single activation source (chain transfer).
The 24-bit SAR designates the DTC transfer source address, and the 24-bit DAR designates the
transfer destination address. After each transfer, SAR and DAR are independently incremented,
decremented, or left fixed depending on its register information.
Figure 9.5 shows the flowchart of DTC operation.
Operation
Note: * For details of the operation, see the section for each peripheral module.
Figure 9.5 Flowchart of DTC Operation
Write register information
Read register infomation
Clear an activation flag
Read DTC vector
Data transfer
or DISEL = 1
Counter = 0
CHNE = 1
No
No
Transfer
Start
End
Yes
Yes
Next transfer
Rev. 6.00 Mar. 18, 2010 Page 293 of 982
Section 9 Data Transfer Controller (DTC)
Interrupt exception
Clear DTCER
handling
*
REJ09B0054-0600