R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 665

• Manufacturer Part Number: R5F21346CNFP#U0
• Description: MCU 1KB FLASH 32K ROM 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/34Cr

Specifications of R5F21346CNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 43
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 632 of 723
Figure 31.3
FMR2 register
31.4.7
Table 31.4
Notes:
RDYSTI bit in
Areas during
erasure
execution before
entering suspend
FMR21 bit in
FST register
FST register
FST register
FST7 bit in
FST6 bit in
Data flash
Program
1. E indicates operation is enabled by using the suspend function, D indicates operation is disabled, and N/A
2. Operation cannot be suspended during programming.
3. The block erase command can be executed for erasure. The program, lock bit program, and read lock bit status
4. The MCU enters read array mode immediately after entering erase-suspend.
5. The program ROM area can be read with the BGO function while programming or block erasing data flash.
ROM
The suspend function halts the auto-erase operation temporarily during auto-erasure.
When auto-erasure is suspended, the next operation can be executed. (Refer to Table 31.4 Executable
Operation during Suspend.)
•
•
•
•
•
Figure 31.3 shows the Suspend Operation Timing.
indicates no combination is available.
commands can be executed for programming.
The clear status register command can be executed when the FST7 bit in the FST register is set to 1 (ready).
The operation of block blank check is disabled during suspend.
When suspending the auto-erasure of any block in data flash, auto-programming and reading another block
can be executed.
When suspending the auto-erasure of data flash, auto-programming and reading program ROM can be
executed.
When suspending the auto-erasure of any block in program ROM, auto-programming and reading another
block can be executed.
When suspending the auto-erasure of program ROM, auto-programming and reading data flash can be
executed.
To check the suspend, verify the FST7 bit is set to 1 (ready), then verify the FST6 bit is set to 1 (during erase-
suspend) to confirm whether erasure has been suspended. When the FST6 bit is set to 0 (other than erase
suspend), erasure completes.
program
User
Suspend Operation
Executable Operation during Suspend
Suspend Operation Timing
Command
Data
flash
Program
ROM
issue
program
User
(Block during erasure
Erase Program Read Erase Program Read Erase Program Read Erase Program Read
N/A
entering suspend)
D
execution before
FMR21
bit to 1
Set
Data flash
Erase
N/A
D
1 is set automatically.
td(SR-SUS)
program
User
N/A
D
(Block during no erasure
Set to 0 by a program.
D
D
entering suspend)
Flash ready
execution before
(readable)
Suspend
interrupt
handling
Data flash
Operation during Suspend
E
E
Data
read
1 is set automatically.
(readable)
Command
Suspend
issue
E
E
(Block during erasure
Program
program
N/A
User
entering suspend)
D
execution before
Program ROM
Set to 0 by a program.
Flash ready
handling
interrupt
N/A
D
(readable)
Suspend
1 is set automatically.
FMR21
bit to 0
N/A
Set
D
program
Erase
User
(Block during no erasure
D
D
Set to 0 by a program.
entering suspend)
execution before
Program ROM
31. Flash Memory
Flash ready
handling
interrupt
E
E
program
User
E
E
(5)