R5F21272SNFP#U0 Renesas Electronics America, R5F21272SNFP#U0 Datasheet - Page 466
R5F21272SNFP#U0
Manufacturer Part Number
R5F21272SNFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Datasheet
1.R5F21272SDFPU0.pdf
(487 pages)
Specifications of R5F21272SNFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
LED, POR, Voltage Detect, WDT
Number Of I /o
25
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
512 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
32-LQFP
For Use With
R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21272SNFP#U0R5F21272SNFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
21.9
21.9.1
21.9.2
Connect a bypass capacitor (at least 0.1 µF) using the shortest and thickest write possible.
During rigorous noise testing or the like, external noise (mainly power supply system noise) can exceed the
capacity of the MCU's internal noise control circuitry. In such cases the contents of the port related registers
may be changed.
As a firmware countermeasure, it is recommended that the port registers, port direction registers, and pull-up
control registers be reset periodically. However, examine the control processing fully before introducing the
reset routine as conflicts may be created between the reset routine and interrupt routines.
Notes on Noise
Sep 26, 2008
Inserting a Bypass Capacitor between VCC and VSS Pins as a Countermeasure
against Noise and Latch-up
Countermeasures against Noise Error of Port Control Registers
Page 447 of 453
21. Usage Notes
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