M3087BFLBGP#U5 Renesas Electronics America, M3087BFLBGP#U5 Datasheet - Page 531

• 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 507 of 587
Figure 26.11
26.3.2.6
The lock bit program command is used to set the lock bit of a given block to 0 (locked).
By writing the command code xx77h in the first bus cycle and xxD0h to the highest-order even address of a
block to be locked in the second bus cycle, the lock bit of the specified block becomes 0. The address specified
in the first bus cycle must be the same highest-order even address of the block specified in the second bus cycle.
Figure 26.11 shows a flow chart of lock bit program command. Execute the read lock bit status command to
read lock bit status (lock bit data).
The FMR00 bit in the FMR0 register can be used to determine whether a lock bit program operation has been
completed or not.
Refer to 26.3.3 Data Protect Function for information on lock bit functions and how to set it to 1 (unlocked).
In EW1 mode, do not execute this command to the block where the rewrite control program is stored.
In EW0 mode, the flash memory enters read status register mode when a program operation starts.
Write the command code xx77h to the highest-order
Write xxD0h to the same highest-order
Lock Bit Program Command
Lock Bit Program Command
even address of block
even address of block
Full status check
FMR00 = 1?
Start
End
YES
NO
Write command code and data to the same even address.
26. Flash Memory