M30845FJGP#U3 Renesas Electronics America, M30845FJGP#U3 Datasheet - Page 75

• Manufacturer Part Number: M30845FJGP#U3
• Description: IC M32C MCU FLASH 512K 144LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M32C/80r

Specifications of M30845FJGP#U3

• Core Processor: M32C/80
• Core Size: 16/32-Bit
• Speed: 32MHz
• Connectivity: CAN, I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 121
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 34x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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6.1 Low Voltage Detection Interrupt
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Table 6.1 Conditions to Generate Low Voltage Detection Interrupt Request
- : "0" or "1"
NOTES:
Table 6.2 Sampling Periods
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If the D40 bit in the D4INT register is set to "1" (low voltage detection interrupt enabled), low voltage
detection interrupt request is generated when the voltage applied to the V
below Vdet4. The low voltage detection interrupt shares the same interrupt vector with the watchdog timer
interrupt and oscillation stop detection interrupt. The D42 bit in the D4INT register determines whether the
low voltage detection interrupt has been generated. Read the D42 bit using an interrupt routine when using
the low voltage detection interrupt at the same time as the watchdog timer interrupt and oscillation stop
detection interrupt.
Set the D41 bit in the D4INT register to "1" (enabled) to use the low voltage detection interrupt to exit stop
mode or wait mode.
The D42 bit is set to "1" (more or less than Vdet4 detected) as soon as the voltage applied to the V
reaches Vdet4 due to the voltage rise and voltage drop. When the D42 bit setting changes "0" to "1", low
voltage detection interrupt request is generated. Set the D42 bit to "0" (not detected) by program. However,
when the D41 bit is set to "1" and the microcomputer is in stop mode or wait mode, low voltage detection
interrupt request is generated, regardless of the D42 bit setting, if the voltage applied to the V
detected to be higher than Vdet4. The microcomputer then exits stop mode or wait mode.
Table 6.1 shows how a low voltage detection interrupt request is generated.
The DF1 and DF0 bits in the D4INT register determine sampling period that detects the voltage applied to
the V
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3. Sampling begins after the VC13 bit setting changes. An interrupt request is generated after sampling is
2. Refer to 6.1.1 Limitations for Exiting Stop/Wait Mode.
4. Set to "0" by program before generating an interrupt.
1. All states excluding wait mode and stop mode are handled as normal operating mode. (Refer to 9.
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Page 52
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6. Voltage Detection Circuit
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