M3087BFLBGP#U5 Renesas Electronics America, M3087BFLBGP#U5 Datasheet - Page 116

• 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 92 of 587
Figure 9.11
1 (Main clock stops)
PRCR register: PRC0 bit = 1
MCD register: bits MCD4 to MCD0 = 01000b
CM2 register: CM22 bit = 0
CM2 register: CM21 bit = 0
PRC0 bit = 0
Procedure to Switch from On-chip Oscillator Clock to Main Clock
Read the CM23 bit in the
Verified several times?
CM2 register
Start
End
0 (Main clock oscillates)
YES
NO
Enable writing to registers associated with clocks
Divide-by-8 mode
Loss of the main clock is not detected
Select the main clock as the CPU clock source
Disable writing to registers associated with clocks
9. Clock Generation Circuits