R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 110
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
1.R5F211A2SPU0.pdf
(51 pages)
2.R5F211A2SPU0.pdf
(300 pages)
3.R5F211A2SPU0.pdf
(341 pages)
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
-
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Manufacturer
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R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
Figure 12.12
Figure 12.13
12.2.2
INT0 input
Sampling
timing
IR bit in
INT0IC register
The INT0 input contains a digital filter. The sampling clock is selected by bits INT0F1 to INT0F0 in the INT0F
register. The INT0 level is sampled every sampling clock cycle and if the sampled input level matches three
times, the IR bit in the INT0IC register is set to 1 (interrupt requested).
Figure 12.12 shows the Configuration of INT0 Input Filter. Figure 12.13 shows an Operating Example of INT0
Input Filter.
Dec 08, 2006
INT0 Input Filter
Port P4_5
direction
INT0
register
This is an operating example in which bits INT0F1 to INT0F0 in the
INT0F register are set to 01b, 10b, or 11b (digital filter enabled).
Configuration of INT0 Input Filter
Operating Example of INT0 Input Filter
INT0F0, INT0F1: Bits in INT0F register
INT0EN, INT0PL: Bits in INTEN register
f32
f1
f8
INT0F1 to INT0F0
= 01b
= 10b
= 11b
Page 92 of 315
Sampling clock
matches 3x)
Digital filter
(input level
Other than
INT0F1 to INT0F0
= 00b
INT0EN
= 00b
Both edges
detection
circuit
Set to 0 by a program
INT0PL = 0
INT0PL = 1
INT0 interrupt
12. Interrupts
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