R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 544

• Manufacturer Part Number: R5F21334CNFP#U0
• Description: MCU 1KB FLASH 16K ROM 32-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/33Cr

Specifications of R5F21334CNFP#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: 27
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K 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: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 514 of 589
Figure 30.12
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)
30. Flash Memory