R5F21274SDFP#U0 Renesas Electronics America, R5F21274SDFP#U0 Datasheet - Page 145

IC R8C/27 MCU FLASH 32LQFP

R5F21274SDFP#U0

Manufacturer Part Number
R5F21274SDFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Datasheet

Specifications of R5F21274SDFP#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
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°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
-

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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
Figure 12.14
Figure 12.15
12.2.2
INTi input
Sampling
timing
IR bit in
INTiIC register
The INTi input contains a digital filter. The sampling clock is selected by bits INTiF1 to INTiF0 in the INTF
register. The IR bit in the INTiIC register is set to 1 (interrupt requested) when the INTi level is sampled for
every sampling clock and the sampled input level matches three times.
Figure 12.14 shows the Configuration of INTi Input Filter. Figure 12.15 shows an Operating Example of INTi
Input Filter.
Sep 26, 2008
INTi Input Filter (i = 0, 1, 3)
Port direction
register
This is an operation example when bits INTiF1 to INTiF0 in the
INTiF register are set to 01b, 10b, or 11b (passing digital filter).
i = 0, 1, 3
Configuration of INTi Input Filter
Operating Example of INTi Input Filter
INTi
(1)
INTiF0, INTiF1: Bits in INTF register
INTiEN, INTiPL: Bits in INTEN register
i = 0, 1, 3
NOTE:
1. INT0: Port P4_5 direction register
f32
f1
f8
INT1: Port P1_5 direction register when using the P1_5 pin
INT3: Port P3_3 direction register
INTiF1 to INTiF0
Page 126 of 453
= 01b
= 10b
= 11b
Port P1_7 direction register when using the P1_7 pin
Sampling clock
matches 3x)
Digital filter
(input level
Other than
INTiF1 to INTiF0
= 00b
INTiEN
= 00b
Both edges
detection
circuit
Set to 0 in program
INTiPL = 0
INTiPL = 1
INTi interrupt
12. Interrupts

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