HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 602

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417751RF240V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-QFP Exposed Pad, 256-eQFP, 256-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

14. Direct Memory Access Controller (DMAC)
Table 14.2 DMAC Pins in DDT Mode
Pin Name
Data bus request
Data bus available
Transfer request signal
DMAC strobe
Channel number
notification
14.1.4
Table 14.3 summarizes the DMAC registers. The DMAC has a total of 17 registers: four registers
are allocated to each channel, and an additional control register is shared by all four channels.
Rev.4.00 Oct. 10, 2008 Page 502 of 1122
REJ09B0370-0400
Register Configuration (SH7751)
Abbreviation
DBREQ
(DREQ0)
BAVL
(DRAK0)
TR
(DREQ1)
TDACK
(DACK0)
ID [1:0]
(DRAK1, DACK1)
Input
Output
Input
Output
Output
I/O
Function
Data bus release request from external
device for DTR format input
Data bus release notification
Data bus can be used 2 cycles after
BAVL is asserted
If asserted 2 cycles after BAVL
assertion, DTR format is sent
Only TR asserted: DMA request
DBREQ and TR asserted
simultaneously: Direct request to
channel 2
Reply strobe signal for external device
from DMAC
Notification of channel number to
external device at same time as TDACK
output
(ID [1] = DRAK1, ID [0] = DACK1)