UPD70F3737GF-GAS-AX Renesas Electronics America, UPD70F3737GF-GAS-AX Datasheet - Page 784
UPD70F3737GF-GAS-AX
Manufacturer Part Number
UPD70F3737GF-GAS-AX
Description
MCU 32BIT V850ES/JX3-L 100-LQFP
Manufacturer
Renesas Electronics America
Series
V850ES/Jx3-Lr
Datasheet
1.UPD70F3737GF-GAS-AX.pdf
(1071 pages)
Specifications of UPD70F3737GF-GAS-AX
Core Processor
RISC
Core Size
32-Bit
Speed
20MHz
Connectivity
CSI, EBI/EMI, I²C, UART/USART
Peripherals
DMA, LVD, PWM, WDT
Number Of I /o
84
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 3.6 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Company:
Part Number:
UPD70F3737GF-GAS-AX
Manufacturer:
Renesas Electronics America
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(12) Read values of DSAn and DDAn registers
(13) Setting up DMA transfer again
If the DSAn and DDAn registers are read during a DMA transfer, the values before and after the registers
were updated might be read.
For example, if the DSAnH register and then the DSAnL register are read when the DMA transfer source
address (DSAn register) is 0000FFFFH and the count direction is incremental (DADCn.SAD1 and
DADCn.SAD0 bits = 00), the value of the DSAnL register differs as follows, depending on whether DMA
transfer is executed immediately after the DSAnH register is read.
(a) If DMA transfer does not occur while DSAn register is being read
(b) If DMA transfer occurs while DSAn register is being read
When re-specifying DMA settings by using the DDAnH, DDAnL, DSAnH, DSAnL, DBCn, and DADCn
registers during the current DMA (the TCn bit is set to 1), be sure to initialize the DMA channels first. The
DMA transfer must be initialized using the procedure described in 20.13 (4) DMA transfer initialization
procedure.
<1> Reading DSAnH register value: DSAnH register = 0000H
<2> Reading DSAnL register value: DSAnL register = FFFFH
<1> Reading DSAnH register value: DSAnH register = 0000H
<2> Occurrence of DMA transfer
<3> Incrementing DSAn register: DSAn register = 00010000H
<4> Reading DSAnL register value: DSAnL register = 0000H
CHAPTER 20 DMA FUNCTION (DMA CONTROLLER)
User’s Manual U18953EJ5V0UD
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