R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 264

• Manufacturer Part Number: R5F21162SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/16r

Specifications of R5F21162SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/16 Group, R8C/17 Group
Rev.2.10
REJ09B0169-0210
20.9
20.9.1
20.9.2
Connect the bypass capacitor (at least 0.1 µ F) using the shortest and thickest as possible.
During severe noise testing, mainly power supply system noise, and introduction of external noise,
the data of port related registers may be changed.
As a firmware countermeasure, it is recommended to periodically reset the port registers, port
direction registers and pull-up control registers. However, examine fully before introducing the reset
routine as conflicts may be created between this reset routine and interrupt routines.
Noise
Jan 19, 2006
Insert a bypass capacitor between VCC and VSS pins as the
countermeasures against noise and latch-up
Countermeasures against Noise Error of Port Control Registers
Page 249 of 254
20. Precautions