HD6417720BP133BV Renesas Electronics America, HD6417720BP133BV Datasheet - Page 508

• Manufacturer Part Number: HD6417720BP133BV
• Description: SH3-DSP, WITH USB AND LCDC, PB-F
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417720BP133BV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: FIFO, I²C, IrDA, MMC, SCI, SD, SIO, SIM, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 117
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Data Converters: A/D 4x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 10 Direct Memory Access Controller (DMAC)
10.5
Pay attentions to the following notes when the DMAC is used.
10.5.1
When burst mode and cycle steal mode are simultaneously set in two or more channels, an
additional DACK may be asserted at the end of burst transfer. This phenomenon will occur when
all of the conditions described below are satisfied.
1. When the DMA transfer is simultaneously performed in two or more channels support both
2. When the channel to be used in burst mode is set to dual address mode, and DACK is output in
3. When the DMAC cannot obtain the bus mastership consecutively even though a transfer
This phenomenon is avoided by taking either of three measures shown below.
• Measure 1
• Measure 2
• Measure 3
Page 448 of 1414
burst mode and cycle steal mode
data write cycle
demand of cycle steal has been received after the completion of burst transfer
After confirming the completion of burst transfer (TE bit = 1), perform the DMA transfer of
other cycle steal mode
The channel to be used in burst mode should not be set to output DACK in data write cycle
When the DMA transfer is simultaneously performed in two or more channels, set all of the
channels to burst mode or cycle steal mode
Usage Notes
Notes on DACK Pin Output
SH7720 Group, SH7721 Group
R01UH0083EJ0400 Rev. 4.00
Sep 21, 2010