參數(shù)資料
型號(hào)： R5F2L38CCNFP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP80
封裝： 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件頁(yè)數(shù)： 35/74頁(yè)
文件大小： 959K
代理商： R5F2L38CCNFP
41
2588F–AVR–06/2013
ATtiny261/461/861
8.
System Control and Reset
8.0.1
Resetting the AVR
During reset, all I/O Registers are set to their initial values, and the program starts execution
from the Reset Vector. The instruction placed at the Reset Vector must be a RJMP – Relative
Jump – instruction to the reset handling routine. If the program never enables an interrupt
source, the Interrupt Vectors are not used, and regular program code can be placed at these
locations. The circuit diagram in Figure 8-1 shows the reset logic. Electrical parameters of the
reset circuitry are given in Table 19-4 on page 190.
Figure 8-1.
Reset Logic
The I/O ports of the AVR are immediately reset to their initial state when a reset source goes
active. This does not require any clock source to be running.
After all reset sources have gone inactive, a delay counter is invoked, stretching the internal
reset. This allows the power to reach a stable level before normal operation starts. The time-out
period of the delay counter is defined by the user through the SUT and CKSEL Fuses. The dif-
ferent selections for the delay period are presented in “Clock Sources” on page 25.
MCU Status
Register (MCUSR)
Brown-out
Reset Circuit
BODLEVEL [1..0]
Delay Counters
CKSEL[1:0]
CK
TIMEOUT
WDRF
BORF
EXTRF
PORF
DATA BUS
Clock
Generator
SPIKE
FILTER
Pull-up Resistor
Watchdog
Oscillator
SUT[1:0]
Power-on Reset
Circuit
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
R5F2L38CCNFP#U0 功能描述:MCU 1KB FLASH 128K ROM 80-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/Lx/38C 標(biāo)準(zhǔn)包裝:96 系列:PIC® 16F 核心處理器:PIC 芯體尺寸:8-位 速度:20MHz 連通性:I²C，SPI 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，POR，PWM，WDT 輸入/輸出數(shù):11 程序存儲(chǔ)器容量:3.5KB（2K x 14） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:128 x 8 電壓 - 電源 (Vcc/Vdd):2.3 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 包裝:管件
R5F2L38CMDFA#V0 制造商:Renesas Electronics Corporation 功能描述:R8C/L38M 128+4/10 80LQFP 14X14 -40 TO +85 - Trays 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 80LQFP
R5F2L38CMDFP#V0 制造商:Renesas Electronics Corporation 功能描述: 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 80LQFP
R5F2L38CMNFA#V0 制造商:Renesas Electronics Corporation 功能描述:R8C/L38M 128+4/10 80LQFP 14X14 -20 TO +85 - Trays 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 80LQFP 制造商:Renesas Electronics Corporation 功能描述:MCU,R8C,16bit,20MHz,128KB Flash,LQFP80
R5F2L38CMNFP#V0 制造商:Renesas Electronics Corporation 功能描述: 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 80LQFP 制造商:Renesas Electronics Corporation 功能描述:MCU,R8C,16bit,20MHz,128KB Flash,LQFP80 制造商:Renesas Electronics Corporation 功能描述:MCU,R5F2L38CMNFP
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