M30624FGAFP#U3 Renesas Electronics America, M30624FGAFP#U3 Datasheet - Page 230

• Manufacturer Part Number: M30624FGAFP#U3
• Description: IC M16C MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/60r

Specifications of M30624FGAFP#U3

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 20K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-QFP
• For Use With: 867-1000 - KIT QUICK START RENESAS 62PM3062PT3-CPE-3 - EMULATOR COMPACT M16C/62P/30P
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

CPU Rewrite Mode (Flash Memory Version)
Figure 1.26.6. Lock bit program flowchart
Erase All Unlock Blocks Command (A7
Lock Bit Program Command (77
By writing the command code “A7
in the second bus cycle that follows, the system starts erasing blocks successively.
Whether the erase all unlock blocks command is terminated can be confirmed by reading the status
register or the flash memory control register 0, in the same way as for block erase. Also, the status
register can be read out to know the result of the auto erase operation.
When the lock bit disable select bit of the flash memory control register 0 = 1, all blocks are erased no
matter how the lock bit is set. On the other hand, when the lock bit disable select bit = 0, the function of
the lock bit is effective and only nonlocked blocks (where lock bit data = 1) are erased.
By writing the command code “77
in the second bus cycle that follows to the block address of a flash memory block, the system sets the
lock bit for the specified block to 0 (locked).
Figure 1.26.6 shows an example of a lock bit program flowchart. The status of the lock bit (lock bit
data) can be read out by a read lock bit status command.
Whether the lock bit program command is terminated can be confirmed by reading the status register
or the flash memory control register 0, in the same way as for page program.
For details about the function of the lock bit and how to reset the lock bit, refer to the section where the
data protect function is detailed.
RY/BY status flag
Lock bit program
block address
Write 77
Write D0
completed
SR4 = 0?
16
16
16
Start
= 1?
/D0
” in the first bus cycle and the confirmation command code “D0
” in the first bus cycle and the confirmation command code “D0
YES
YES
16
16
16
16
)
/D0
NO
16
)
NO
Lock bit program in
error
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M16C / 62A Group
Mitsubishi microcomputers
16
16
227
”
”