R5F21274SNFP#U0 Renesas Electronics America, R5F21274SNFP#U0 Datasheet - Page 143

IC R8C/27 MCU FLASH 32LQFP

R5F21274SNFP#U0

Manufacturer Part Number
R5F21274SNFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Datasheet

Specifications of R5F21274SNFP#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
-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
-

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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
12.2
Figure 12.12
12.2.1
Table 12.6
NOTE:
INT0 (P4_5)
INT1 (P1_5, P1_7, or P3_6)
INT3 (P3_3)
External Input Enable Register
b7 b6 b5 b4
NOTES:
1. The INT1 pin is selected by the INT1SEL bit in the PMR register and the TIOSEL bit in the TRAIOC
1.
2.
The INTi interrupt is generated by an INTi input. When using the INTi interrupt, the INTiEN bit in the INTEN
register is set to 1 (enable). The edge polarity is selected using the INTiPL bit in the INTEN register and the
POL bit in the INTiIC register.
Inputs can be passed through a digital filter with three different sampling clocks.
Table 12.6 lists the Pin Configuration of INT Interrupt. Figure 12.12 shows the INTEN Register. Figure 12.13
shows the INTF Register.
register. Refer to 7. Programmable I/O Ports for details.
0 0
INT Interrupt
When setting the INTiPL bit (i = 0 to 3) to 1 (both edges), set the POL bit in the INTiIC register to 0 (selects falling
edge).
The IR bit in the INTiIC register may be set to 1 (requests interrupt) w hen the INTiPL bit is rew ritten. Refer to 12.6.4
Changing Interrupt Sources.
Sep 26, 2008
INTi Interrupt (i = 0, 1, 3)
b3 b2 b1 b0
Pin name
Pin Configuration of INT Interrupt
INTEN Register
Bit Symbol
(b5-b4)
Symbol
INT0EN
INT1EN
INT3EN
INT0PL
INT1PL
INT3PL
INTEN
Page 124 of 453
(1)
_____
INT0
_____
INT0
_____
INT1
_____
INT1
Reserved bits
_____
INT3
_____
INT3
Input
Input
Input
input enable bit
input polarity select bit
input enable bit
input polarity select bit
input enable bit
input polarity select bit
Input/Output
Address
Bit Name
00F9h
INT0 interrupt input, Timer RB external trigger input,
Timer RC pulse output forced cutoff input
INT1 interrupt input
INT3 interrupt input
(1,2)
(1,2)
(1,2)
0 : Disable
1 : Enable
0 : One edge
1 : Both edges
0 : Disable
1 : Enable
0 : One edge
1 : Both edges
Set to 0.
0 : Disable
1 : Enable
0 : One edge
1 : Both edges
Function
After Reset
Function
00h
12. Interrupts
RW
RW
RW
RW
RW
RW
RW
RW

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