M306N4FGGP#U3 Renesas Electronics America, M306N4FGGP#U3 Datasheet - Page 375
M306N4FGGP#U3
Manufacturer Part Number
M306N4FGGP#U3
Description
IC M16C/6N4 MCU FLASH 100-LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/6Nr
Specifications of M306N4FGGP#U3
Core Processor
M16C/60
Core Size
16-Bit
Speed
24MHz
Connectivity
CAN, I²C, IEBus, SIO, UART/USART
Peripherals
DMA, WDT
Number Of I /o
85
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
10K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 26x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-LQFP
Package
100LQFP
Family Name
M16C
Maximum Speed
24 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
16|32 Bit
Number Of Programmable I/os
87
Interface Type
I2C/UART
On-chip Adc
26-chx10-bit
On-chip Dac
2-chx8-bit
Number Of Timers
11
For Use With
R0K3306NKS001BE - KIT DEV RSK RSK-M16C/6NKR0K3306NKS000BE - KIT DEV RSK RSK-M16C/6NK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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M16C/6N Group (M16C/6N4)
Rev.2.40
REJ09B0009-0240
23.7 DMAC
23.7.1 Write to DMAE Bit in DMiCON Register (i = 0, 1)
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 the 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:
1. The DMAS bit remains unchanged even if 1 is written. However, if 0 is written to this bit, it is set to 0
2. Read the TCRi register to verify whether the DMAi is in an initial state. If the read value is equal to
Apr 14, 2006
(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.
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 while the instruction is being
executing.
a 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.
page 351 of 376
(2)
in a program.
(1)
.
23. Usage Notes
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