M3087BFLBGP#U5 Renesas Electronics America, M3087BFLBGP#U5 Datasheet - Page 587

• Manufacturer Part Number: M3087BFLBGP#U5
• Description: IC M32C/87 MCU FLASH 144LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M32C/80r

Specifications of M3087BFLBGP#U5

• Core Processor: M32C/80
• Core Size: 16/32-Bit
• Speed: 32MHz
• Connectivity: EBI/EMI, I²C, IEBus, IrDA, SIO, UART/USART
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 121
• Program Memory Size: 1MB (1M x 8)
• Program Memory Type: FLASH
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 34x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: R0K330879S001BE - KIT DEV RSK M32C/87R0K330879S000BE - KIT DEV RSK M32C/87
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

M32C/87 Group (M32C/87, M32C/87A, M32C/87B)
REJ09B0180-0151 Rev.1.51 Jul 31, 2008
Page 563 of 587
28.5.4.3
The followings are suggestions to reduce power consumption when programming or designing systems.
Ports:
A/D converter:
D/A converter:
Peripheral function clock stop:
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Through current may flow into floating input pins. Set unassigned pins to input mode and connect them to
VSS via a resistor (pull down), or set unassigned pins to output mode and leave them open.
When the A/D conversion is not performed, set the VCUT bit in the AD0CON1 register to 0 (VREF not
connected). When the A/D conversion is performed, set the VCUT bit to 1 (VREF connection) and wait
1 μs or more to start the A/D conversion.
When the D/A conversion is not performed, set the DAiE bit (i = 0, 1) in the DACON register to 0 (output
disabled) and registers DACON1 and DAi to 00h.
When entering wait mode from main clock mode, on-chip oscillator mode, or on-chip oscillator low-power
consumption mode, power consumption can be reduced by setting the CM02 bit in the CM0 register to 1 to
stop peripheral function clock source (fPFC). However, fC32 does not stop by setting the CM02 bit to 1.
In low-speed mode, do not set the CM02 bit to 1 (peripheral clock stops in wait mode) when entering wait
mode.
(Technical update: TN-M16C-69-0104)
Suggestions to Reduce Power Consumption
28. Usage Notes