UPD78F1506GF-GAT-AX Renesas Electronics America, UPD78F1506GF-GAT-AX Datasheet - Page 743
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UPD78F1506GF-GAT-AX
Manufacturer Part Number
UPD78F1506GF-GAT-AX
Description
MCU 16BIT 78K0R/LX3 128-LQFP
Manufacturer
Renesas Electronics America
Series
78K0R/Lx3r
Datasheet
1.UPD78F1500GK-GAK-AX.pdf
(1016 pages)
Specifications of UPD78F1506GF-GAT-AX
Core Processor
78K/0R
Core Size
16-Bit
Speed
20MHz
Connectivity
3-Wire SIO, I²C, LIN, UART/USART
Peripherals
DMA, LCD, LVD, POR, PWM, WDT
Number Of I /o
78
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x12b, D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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78K0R/Lx3
18.6 Cautions on Using DMA Controller
R01UH0004EJ0401 Rev.4.01
Jul 2, 2010
(1) Priority of DMA
(2) DMA response time
During DMA transfer, a request from the other DMA channel is held pending even if generated. The pending
DMA transfer is started after the ongoing DMA transfer is completed. If two DMA requests are generated at the
same time, however, DMA channel 0 takes priority over DMA channel 1.
If a DMA request and an interrupt request are generated at the same time, the DMA transfer takes precedence,
and then interrupt servicing is executed.
The response time of DMA transfer is as follows.
Note The maximum time necessary to execute an instruction from internal RAM is 16 clock cycles.
Cautions 1. The above response time does not include the two clock cycles required for a DMA
Remark
Response time
2. When executing a DMA pending instruction (see 18.6 (4)), the maximum response
3. Do not specify successive transfer triggers for a channel within a period equal to the
1 clock: 1/f
transfer.
time is extended by the execution time of that instruction to be held pending.
maximum response time plus one clock cycle, because they might be ignored.
Table 17-2. Response Time of DMA Transfer
CLK
(f
CLK
: CPU clock)
3 clocks
Minimum Time
10 clocks
CHAPTER 18 DMA CONTROLLER
Maximum Time
Note
743
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