M3087BFLBGP#U5 Renesas Electronics America, M3087BFLBGP#U5 Datasheet - Page 527

• 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 503 of 587
Figure 26.8
<Low-power consumption mode program>
Execute the following procedure using the program for low-power
consumption mode transferred to an area other than the flash memory
Transfer the program for low-power consumption mode
Jump to the program for low-power consumption mode
transferred to an area other than the flash memory.
FMR0 register: FMR01 bit = 0
FMR0 register: FMR01 bit = 1
FMR0 register: FMSTP bit = 1
Switch the CPU clock source
Stop main clock
Oscillate main clock
Switch the CPU clock source
FMR0 register: FMSTP bit = 0
FMR0 register: FMR01 bit = 0
Jump to a given address in the flash memory
to an area other than the flash memory
Processing in low-power consumption
mode or on-chip oscillator low-power
Setting Procedure to Enter and Exit Low Power Mode
consumption mode
Wait for tps
Start
End
CPU rewrite mode enabled
- To set the FMR01 bit to 1, write a 1 to the FMR01 bit
- Set it while "H" is applied to the NMI pin.
Flash memory stops operating
(Enters low-power consumption state and a flash memory is initialized)
When switching the CPU clock source, wait until the new CPU clock
source stabilizes.
Flash memory starts operating
CPU rewrite mode disabled
-
Wait time to stabilize flash memory circuit
- Add tps wait time by a program.
- Do not access the flash memory during this wait time.
To change the FMR01 bit from 1 to 0, enter read array mode
immediately after writing a 0.
Write the value to the FMR0 register in 8-bit units.
Do not generate an interrupt or a DMA or DMACII transfer
between these two settings.
and then write to address 0057h in 16-bit units.
Set the eight high-order bits to 00h.
26. Flash Memory