R5F21256SNFP#ES Renesas Electronics America, R5F21256SNFP#ES Datasheet - Page 443
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
19.6
19.6.1
Parallel I/O mode is used to input and output software commands, addresses and data necessary to control (read,
program, and erase) the on-chip flash memory. Use a parallel programmer which supports this MCU. Contact the
manufacturer of the parallel programmer for more information, and refer to the user’s manual of the parallel
programmer for details on how to use it.
ROM areas shown in Figures 19.1 and 19.2 can be rewritten in parallel I/O mode.
The ROM code protect function disables the reading and rewriting of the flash memory. (Refer to 19.3
Functions to Prevent Rewriting of Flash Memory.)
Parallel I/O Mode
Feb 29, 2008
ROM Code Protect Function
Page 424 of 485
19. Flash Memory
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