M30245FCGP#U1 Renesas Electronics America, M30245FCGP#U1 Datasheet - Page 45

• 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
Table 1.25. Port status during wait mode
Rev.2.00
REJ03B0005-0200
Address bus, data bus, CS0 to CS3
RD, WR, BHE, WRL, WRH
HLDA, BCLK
ALE
Port
BCLK Status transition
Wait Mode
Power dissipation can be reduced and low-voltage operation achieved by changing the count source for BCLK. Table
1.26 shows the operating modes corresponding to the settings of system clock control registers 0 and 1.
When reset, the device starts in division by 8 mode. The main clock division select bit 0 (bit 6 at address 0006
changes to "1" when shifting from high-speed/medium-speed to stop mode and at a reset. When shifting from low-
speed/low power dissipation mode to stop mode, the value before stop mode is retained. The following shows the
operational modes of BCLK.
When a WAIT instruction is executed, the BCLK stops and the microcomputer enters the wait mode. In this mode,
oscillation continues but the BCLK and watchdog timer stop. Writing "1" to the WAIT peripheral function clock stop bit
and executing a WAIT instruction stops the clock being supplied to the internal peripheral functions, allowing power
dissipation to be reduced. However, the peripherial function clock f
does not contribute to any power savings. When the MCU is running in low-speed or low power dissipiation mode,
do not enter WAIT mode with this bit set to "1". Table 1.25 shows the status of the ports in wait mode.
Wait mode is cancelled by a hardware reset or interrupt. If an interrupt is used to cancel wait mode, that interrupt
must first be enabled and the interrupt priority levels of all other interrupts that are not used to cancel wait mode must
be set to "0". When returning from an interrupt, the microcomputer restarts using as BCLK the clock that had been
selected when the WAIT instruction was executed, and the program continues from the interrupt routine. If only a
hardware reset or NMI interrupt is used to cancel wait mode, change the priority level of all interrupts to "0", then shift
to wait mode.
Oct 16, 2006
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Retains sta tus before wait mode
“H”
“H”
“H”
Retains sta tus before wait mode
Memory expansion mode
Microprocessor mode
C32
does not stop during wait mode and thus
Retains status before wait mode
Single-chip mode
System Clock
16
)