DF2238RTF6 Renesas Electronics America, DF2238RTF6 Datasheet - Page 316

• 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

Section 8 DMA Controller (DMAC)
ETCRB is decremented by 1 after every block transfer, and when the count reaches H'0000 the
DTE bit in DMABCRL is cleared and transfer ends. If the DTIE bit in DMABCRL is set to 1 at
this point, an interrupt request is sent to the CPU or DTC.
Figure 8.16 shows the operation flow in block transfer mode.
Rev. 6.00 Mar. 18, 2010 Page 254 of 982
REJ09B0054-0600
Figure 8.16 Operation Flow in Block Transfer Mode
MARA = MARA
MARB = MARB
MARB = MARB + DAIDE ( 1)
MARA = MARA + SAIDE ( 1)
No
Write to address specified by MARB
Read address specified by MARA
ETCRAL = ETCRAL
ETCRB = ETCRB
ETCRAL = ETCRAH
(DTE = DTME = 1)
SAIDE ( 1)
Clear DTE bit to 0
Transfer request?
DAIDE ( 1)
ETCRB = H'0000
ETCRAL = H'00
to end transfer
Release bus
Acquire bus
BLKDIR = 0
Start
Yes
Yes
Yes
Yes
SAID
DAID
1
SAID
DAID
2
2
1
DTSZ
DTSZ
2
2
DTSZ
DTSZ
ETCRAH
ETCRAH
No
No
No