M30245FCGP#U1 Renesas Electronics America, M30245FCGP#U1 Datasheet - Page 204

• Manufacturer Part Number: M30245FCGP#U1
• Description: IC M16C/24 MCU FLSH 128K 100LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/20r

Specifications of M30245FCGP#U1

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, SSI, UART/USART, USB
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• Package: 100LQFP
• Family Name: R8C
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 3.3 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 82
• Interface Type: USB/UART/I2C/SPI
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

M30245 Group
Figure 1.154. Lock bit program flowchart
Figure 1.155. Read lock bit status flowchart
Rev.2.00
REJ03B0005-0200
7. Lock Bit Program Command (77
By writing the command code "77
cycle to the block address of a flash memory block, the system sets the lock bit for the specified block to "0" (locked).
Figure 1.154 is an example of a lock bit program flowchart. The lock bit status (lock bit data) can be read out by a
read lock bit status command.
Reading the status register or the flash memory control register 0 confirms whether the lock bit program command
has terminated the same way as in the page program.
Refer to the data protect function section for more details.
8. Read Lock Bit Status Command (71
By writing the command code "71
second bus cycle that follows, the system reads out the status of the lock bit of the specified block to the data bit (D
Figure 1.155 is an example of a read lock bit program flowchart.
Oct 16, 2006
page 202 of 264
16
16
" in the first bus cycle and the confirmation command code "D0
Enter block address
" in the first bus cycle and then the block address of a flash memory block in the
16
Blocks locked
/D0
RY/BY status flag
Write 71
Lock bit program
block address
16
D6 = 0?
Write 77
Write D0
Start
16
completed
SR4 = 0?
)
Start
)
= 1?
YES
YES
YES
16
16
16
NO
NO
NO
Lock bit program in
Blocks not locked
error
CPU Rewrite Mode
16
" in the second bus
6
).