R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 315

IC R8C MCU FLASH 4K 20SSOP

R5F211B1SP#U0

Manufacturer Part Number
R5F211B1SP#U0
Description
IC R8C MCU FLASH 4K 20SSOP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/R8C/Tiny/1Br
Datasheets

Specifications of R5F211B1SP#U0

Core Processor
R8C
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SIO, SSU, UART/USART
Peripherals
LED, POR, Voltage Detect, WDT
Number Of I /o
13
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
384 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
R0K5211B4S001BE - KIT STARTER FOR R8C/18191A1BR0K5211B4S000BE - KIT DEV EVALUATION R8C/1BR0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F211B1SP#U0R5F211B1SP#V0
Manufacturer:
MICREL
Quantity:
2 860
R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
20.2
20.2.1
20.2.2
20.2.3
20.2.4
Do not read address 00000h by a program. When a maskable interrupt request is acknowledged, the CPU reads
interrupt information (interrupt number and interrupt request level) from 00000h in the interrupt sequence. At
this time, the acknowledged interrupt IR bit is set to 0.
If address 00000h is read by a program, the IR bit for the interrupt which has the highest priority among the
enabled interrupts is set to 0. This may cause the interrupt to be canceled, or an unexpected interrupt to be
generated.
Set any value in the SP before an interrupt is acknowledged. The SP is set to 0000h after reset. Therefore, if an
interrupt is acknowledged before setting a value in the SP, the program may run out of control.
Either “L” level or “H” level of at least 250 ns width is necessary for the signal input to pins INT0 to INT3 and
pins KI0 to KI3, regardless of the CPU clock.
Reset the watchdog timer after a watchdog timer interrupt is generated.
Notes on Interrupts
Dec 08, 2006
Reading Address 00000h
SP Setting
External Interrupt and Key Input Interrupt
Watchdog Timer Interrupt
Page 297 of 315
20. Usage Notes

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