M30800SFP-BL#U5 Renesas Electronics America, M30800SFP-BL#U5 Datasheet - Page 66

• Manufacturer Part Number: M30800SFP-BL#U5
• Description: MCU 3/5V 0K,PB-FREE 100-QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/80r

Specifications of M30800SFP-BL#U5

• Core Processor: M16C/80
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 45
• Program Memory Type: ROMless
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

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8.7 Power Saving
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In Power Save modes, the CPU and oscillator stop and the operating clock is slowed to minimize power
dissipation by the CPU. The following outlines the Power Save modes.
There are three power save modes.
(1) Normal operating mode
(2) Wait mode
(3) Stop mode
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CPU operation is halted in this mode. The oscillator continues to run.
All oscillators stop in this mode. The CPU and internal peripheral functions all stop. Of all 3 power saving
modes, power savings are greatest in this mode.
Figure 8.7 shows the clock transition between each of the three modes, (1), (2), and (3).
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• High-speed mode
• Medium-speed mode
• Low-speed mode
• Low power-dissipation mode
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In this mode, one main clock cycle forms BCLK. The CPU operates on the selected internal clock. The
peripheral functions operate on the clocks specified for each respective function.
In this mode, the main clock is divided into 2, 3, 4, 6, 8, 10, 12, 14, or 16 to form BCLK. The CPU
operates on the selected internal clock. The peripheral functions operated on the clocks specified for
each respective function.
In this mode, fc forms BCLK. The CPU operates on the fc clock. fc is the clock supplied by the
subclock. The peripheral functions operate on the clocks specified for each respective function.
This mode is selected when the main clock is stopped from low-speed mode. The CPU operates on
the fc clock. fc is the clock supplied by the subclock. Only the peripheral functions for which the
subclock was selected as the count source continue to run.
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8. Clock Generating Circuit