R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 675

• 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 642 of 723
Figure 31.12
Notes:
1. The interrupt vector table and interrupt routine for interrupts to be used must be allocated to an area other the erase target area.
2. td(SR-SUS) is required until suspend is acknowledged after the FMR21 bit is set to 1.
3. When auto-erasure suspends, a flash ready status interrupt is generated.
The interrupt to enter suspend must be enabled beforehand.
Block Erase Flowchart (Flash Ready Status Interrupt Enabled and Suspend Enabled)
Write the command code 20h
Write D0h to any block address
I = 1 (interrupt enabled)
Block erase completed
RDYSTIE = 1
FMR20 = 1
Start
Access the flash memory
Flash ready status
interrupt
RDYSTI = 0
FMR21 = 0
FST6 = 1?
REIT
(1, 3)
Yes
Maskable interrupt
No
FMR21 = 1
REIT
Full status check
I: Flag in CPU register
RDYSTI, FST6: Bits in FST register
RDYSTIE: Bit in FMR0 register
FMR20, FMR21: Bits in FMR2 register
(2)
(1)
31. Flash Memory