參數資料
型號: R5F21264SDFP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32
封裝: 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁數: 34/52頁
文件大?。?/td> 620K
代理商: R5F21264SDFP
57
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
13. External interrupts
The External Interrupts are triggered by the INT0 pin or any of the PCINT30:0 pins
(2). Observe that, if enabled, the
interrupts will trigger even if the INT0 or PCINT30:0 pins are configured as outputs. This feature provides a way of
generating a software interrupt. The pin change interrupt PCI1 will trigger if any enabled PCINT15:8 pin toggles.
Pin change interrupts PCI0 will trigger if any enabled PCINT7:0 pin toggles. The PCMSK3
(1), PCMSK2 (1),
PCMSK1, and PCMSK0 Registers control which pins contribute to the pin change interrupts. Pin change interrupts
on PCINT30:0 are detected asynchronously. This implies that these interrupts can be used for waking the part also
from sleep modes other than Idle mode.
The INT0 interrupts can be triggered by a falling or rising edge or a low level. This is set up as indicated in the
specification for the ”EICRA – External Interrupt Control Register A” on page 58. When the INT0 interrupt is
enabled and is configured as level triggered, the interrupt will trigger as long as the pin is held low. . Note that rec-
ognition of falling or rising edge interrupts on INT0 requires the presence of an I/O clock, described in ”Clock
systems and their distribution” on page 27. Low level interrupt on INT0 is detected asynchronously. This implies
that this interrupt can be used for waking the part also from sleep modes other than Idle mode. The I/O clock is
halted in all sleep modes except Idle mode.
Note that if a level triggered interrupt is used for wake-up from Power-down, the required level must be held long
enough for the MCU to complete the wake-up to trigger the level interrupt. If the level disappears before the end of
the Start-up Time, the MCU will still wake up, but no interrupt will be generated. The start-up time is defined by the
SUT and CKSEL Fuses as described in ”System clock and clock options” on page 27.
Notes:
1. PCMSK3 and PCMSK2 are only present in Atmel ATmega3250A/3250PA/6450A/6450P.
2. PCINT30:16 are only present in ATmega3250A/3250PA/6450A/6450P. Only PCINT15:0 are present in Atmel
ATmega165A/165PA; ATmega325A/325PA and ATmega645A/645P. See ”Pin configurations” on page 2 and ”Reg-
13.1
Pin change interrupt timing
An example of timing of a pin change interrupt is shown in Figure 13-1 on page 57.
Figure 13-1. Pin change interrupt.
clk
PCINT(n)
pin_lat
pin_sync
pcint_in_(n)
pcint_syn
pcint_setflag
PCIF
PCINT(0)
pin_sync
pcint_syn
pin_lat
D
Q
LE
pcint_setflag
PCIF
clk
PCINT(0) in PCMSK(x)
pcint_in_(0)
0
x
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相關代理商/技術參數
參數描述
R5F21264SDFP#U0 制造商:Renesas Electronics Corporation 功能描述:MCU 16-Bit R8C CISC 16KB Flash 3.3V/5V 32-Pin LQFP Tray 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT R8C CISC 16KB FLASH 3.3V/5V 32LQFP - Trays 制造商:Renesas Electronics 功能描述:M16C 20MHz 制造商:Renesas Electronics Corporation 功能描述:IC R8C/26 MCU FLASH 32LQFP 制造商:Renesas 功能描述:MCU 16-Bit R8C CISC 16KB Flash 3.3V/5V 32-Pin LQFP Tray
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R5F21264SDFP#W4 功能描述:MCU 16KB ROM 1KB RAM 32-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:R8C/2x/26 標準包裝:300 系列:78K0R/Ix3 核心處理器:78K/0R 芯體尺寸:16-位 速度:40MHz 連通性:3 線 SIO,I²C,LIN,UART/USART 外圍設備:DMA,LVD,POR,PWM,WDT 輸入/輸出數:27 程序存儲器容量:16KB(16K x 8) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:38-SSOP 包裝:托盤
R5F21264SDFP#X6 功能描述:MCU 16KB ROM 1KB RAM 32-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:R8C/2x/26 標準包裝:300 系列:78K0R/Ix3 核心處理器:78K/0R 芯體尺寸:16-位 速度:40MHz 連通性:3 線 SIO,I²C,LIN,UART/USART 外圍設備:DMA,LVD,POR,PWM,WDT 輸入/輸出數:27 程序存儲器容量:16KB(16K x 8) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:38-SSOP 包裝:托盤