M30260F8AGP#U3A Renesas Electronics America, M30260F8AGP#U3A Datasheet - Page 326
M30260F8AGP#U3A
Manufacturer Part Number
M30260F8AGP#U3A
Description
IC M16C/26A MCU FLASH 64K 48LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/Tiny/26r
Specifications of M30260F8AGP#U3A
Core Processor
M16C/60
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, IEBus, SIO, UART/USART
Peripherals
DMA, PWM, Voltage Detect, WDT
Number Of I /o
39
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
For Use With
R0K33026AS000BE - KIT DEV EVALUATION M16C/26A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Price
Part Number:
M30260F8AGP#U3AM30260F8AGP#D3
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
M30260F8AGP#U3AM30260F8AGP#D5
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
M30260F8AGP#U3AM30260F8AGP#U3
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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19.6 DMAC
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19.6.1 Write to DMAE Bit in DMiCON Register
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When both of the conditions below are met, follow the steps below.
Conditions
• The DMAE bit is set to “1” again while it remains set (DMAi is in an active state).
• A DMA request may occur simultaneously when the DMAE bit is being written.
Step 1: Write “1” to the DMAE bit and DMAS bit in DMiCON register simultaneously
Step 2: Make sure that the DMAi is in an initial state
If the DMAi is not in an initial state, the above steps should be repeated.
Notes:
0
0
1. The DMAS bit remains unchanged even if “1” is written. However, if “0” is written to this bit, it is set to
6
2. Read the TCRi register to verify whether the DMAi is in an initial state. If the read value is equal to a
2
A
0
F
“0” (DMA not requested). In order to prevent the DMAS bit from being modified to “0”, “1” should be
written to the DMAS bit when “1” is written to the DMAE bit. In this way the state of the DMAS bit
immediately before being written can be maintained.
value which was written to the TCRi register before DMA transfer start, the DMAi is in an initial state.
(If a DMA request occurs after writing to the DMAE bit, the value written to the TCRi register is “1”.) If
the read value is a value in the middle of transfer, the DMAi is not in an initial state.
Similarly, when writing to the DMAE bit with a read-modify-write instruction, “1” should be written to
the DMAS bit in order to maintain a DMA request which is generated during execution.
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page 307
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(*2)
in a program.
(*1)
.
19. Usage Notes
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