HD6417709SF100B Renesas Electronics America, HD6417709SF100B Datasheet - Page 419

• Manufacturer Part Number: HD6417709SF100B
• Description: MCU 32-Bit SuperH RISC ROMLess 1.7V/3.3V 208-Pin LQFP
• Manufacturer: Renesas Electronics America

Specifications of HD6417709SF100B

• Package: 208LQFP
• Family Name: SuperH
• Maximum Speed: 100 MHz
• Operating Supply Voltage: 1.7|3.3 V
• Data Bus Width: 32 Bit
• Program Memory Type: ROMLess
• Number Of Programmable I/os: 96
• Interface Type: IrDA/SCI/SCIF/UDI
• On-chip Adc: 8-chx10-bit
• On-chip Dac: 2-chx8-bit
• Operating Temperature: -20 to 75 °C
• Number Of Timers: 3

The reload function can be executed with a transfer data size of 8, 16, or 32 bits.
DMATCR2, which specifies the transfer count, decrements 1 each time a transfer ends regardless
of whether the reload function is on or off. Consequently, a multiple of four must be specified in
DMATCR2 when the reload function is on. Operation is not guaranteed if other values are
specified.
The counter that counts the execution of four transfers for the address reload function is reset by
clearing the DME bit in DMAOR or the DE bit in CHCR2, by setting the transfer end flag (TE bit
in CHCR2), by DMAC address error, and by NMI input, as well as by a reset, but the SAR2,
DAR2, and DMATCR2 registers are not reset. Therefore, if these sources are generated, there will
be a mix of an initialized counter and uninitialized registers in the DMAC, and a malfunction will
be caused by restarting the DMAC in that state. Consequently, if one of these sources other than
setting of the TE bit occurs during use of the address reload function, set SAR2, DAR2, and
DMATCR2 again.
address bus
data bus
Internal
Internal
CK
Figure 11.23 Timing Chart of Source Address Reload Function
First transfer on
SAR2
SAR2 output
DAR2 output
channel 2
DAR2
SAR2 data
SAR2+2
Second transfer
SAR2+2 output
DAR2 output
DAR2
SAR2+2 data
SAR2+4
SAR2+4 output
Third transfer
DAR2 output
DAR2
SAR2+4 data
Rev. 5.00, 09/03, page 373 of 760
SAR2+6
SAR2+6 output
Fourth transfer
DAR2 output
SAR2 reload
SAR2 output
DAR2 output
DAR2
SAR2+6 data
Fifth transfer
SAR2