R5F21256SNFP#ES Renesas Electronics America, R5F21256SNFP#ES Datasheet - Page 435
R5F21256SNFP#ES
Manufacturer Part Number
R5F21256SNFP#ES
Description
MCU 2/5V 32K 52-LQFP ES SAMPLE
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Specifications of R5F21256SNFP#ES
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
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K 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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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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
Page 416 of 485
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
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