R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 435

• Manufacturer Part Number: R5F21257SNFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 52-LQFP
• For Use With: R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 19.15
EW0 Mode
EW1 Mode
NOTES:
Feb 29, 2008
1. In EW0 mode, the interrupt vector table and interrupt routine for interrupts to be used should be allocated to the RAM area.
2. td(SR-SUS) is needed until the interrupt request is acknowledged after it is generated. The interrupt to enter suspend
3. When no interrupt is used, the instruction to enable interrupts is not needed.
4. td(SR-SUS) is needed until erase is suspended after the FMR41 bit in the FMR4 register is set to 1.
should be in interrupt enabled status.
Block Erase Command (When Erase-Suspend Function Enabled)
Write the command code 20h
Write the command code 20h
I = 1 (enable interrupt)
Write D0h to any block
Block erase completed
Write D0h to any block
Block erase completed
I = 1 (enable interrupt)
Full status check
Full status check
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FMR00 = 1 ?
FMR00 = 1 ?
FMR40 = 1
FMR40 = 1
FMR41 = 0
address
address
Start
Start
Yes
Yes
(3)
No
No
Access flash memory
Access flash memory
Maskable interrupt
Maskable interrupt
FMR43 = 1 ?
FMR41 = 1
FMR46 = 1 ?
FMR41 = 0
REIT
REIT
Yes
Yes
(4)
(1)
(2)
No
No
Access flash memory
19. Flash Memory