M30245FCGP#U1 Renesas Electronics America, M30245FCGP#U1 Datasheet - Page 255

• Manufacturer Part Number: M30245FCGP#U1
• Description: IC M16C/24 MCU FLSH 128K 100LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/20r

Specifications of M30245FCGP#U1

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, SSI, UART/USART, USB
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• Package: 100LQFP
• Family Name: R8C
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 3.3 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 82
• Interface Type: USB/UART/I2C/SPI
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

M30245 Group
Rev.2.00
REJ03B0005-0200
(3) Writing to the DMAE bit in DMiCON register
If the following conditions are met:
Follow the steps below:
Note 1: The DMAS bit remains unchanged even if “1” is written. However, if “0” is written to this bit, it is set to “0” (DMA
Note 2: Read the TCRi register to verify whether the DMAi is in an initial state. If the read value is equal to a value which
The DMAE bit is set to “1” again while it is already set to “1” (DMAi is in 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 (Note 1).
Step 2: Make sure that the DMAi is in an initial state (Note 2) in a program.
If the DMAi is not in an initial state, the above steps should be repeated.
Oct 16, 2006
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 during execution.
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 a transfer, the DMAi is not in an initial state.
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Usage Notes