參數(shù)資料
型號(hào)： PIC18F2580-I/ML
廠商： Microchip Technology
文件頁(yè)數(shù)： 49/88頁(yè)
文件大?。?/td> 0K
描述： IC PIC MCU FLASH 16KX16 28QFN
產(chǎn)品培訓(xùn)模塊： Asynchronous Stimulus
PIC18 J Series MCU Overview
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝： 61
系列： PIC® 18F
核心處理器： PIC
芯體尺寸： 8-位
速度： 40MHz
連通性： CAN，I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，HLVD，POR，PWM，WDT
輸入/輸出數(shù)： 25
程序存儲(chǔ)器容量： 32KB（16K x 16）
程序存儲(chǔ)器類(lèi)型： 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量： 1.5K x 8
電壓 - 電源 (Vcc/Vdd)： 4.2 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 ~ 85°C
封裝/外殼： 28-VQFN 裸露焊盤(pán)
包裝： 管件
產(chǎn)品目錄頁(yè)面： 645 (CN2011-ZH PDF)
配用： AC164322-ND - MODULE SOCKET MPLAB PM3 28/44QFN
2010 Microchip Technology Inc.
DS21801F-page 53
MCP2515
8.0
OSCILLATOR
The MCP2515 is designed to be operated with a crystal
or ceramic resonator connected to the OSC1 and
OSC2 pins. The MCP2515 oscillator design requires
the use of a parallel cut crystal. Use of a series cut
crystal may give a frequency out of the crystal
manufacturer’s specifications. A typical oscillator circuit
is shown in Figure 8-1. The MCP2515 may also be
driven by an external clock source connected to the
OSC1 pin, as shown in Figure 8-2 and Figure 8-3.
8.1
Oscillator Startup Timer
The MCP2515 utilizes an Oscillator Startup Timer
(OST) that holds the MCP2515 in reset to ensure that
the oscillator has stabilized before the internal state
machine begins to operate. The OST maintains reset
for the first 128 OSC1 clock cycles after power-up or a
wake-up from Sleep mode occurs. It should be noted
that no SPI protocol operations should be attempted
until after the OST has expired.
8.2
CLKOUT Pin
The CLKOUT pin is provided to the system designer for
use as the main system clock or as a clock input for
other devices in the system. The CLKOUT has an inter-
nal prescaler which can divide FOSC by 1, 2, 4 and 8.
The CLKOUT function is enabled and the prescaler is
selected
via
the
CANCNTRL
register
(see
The CLKOUT pin will be active upon system reset and
default to the slowest speed (divide by 8) so that it can
be used as the MCU clock.
When Sleep mode is requested, the MCP2515 will
drive sixteen additional clock cycles on the CLKOUT
pin before entering Sleep mode. The idle state of the
CLKOUT pin in Sleep mode is low. When the CLKOUT
function is disabled (CANCNTRL.CLKEN = ‘0’) the
CLKOUT pin is in a high-impedance state.
The CLKOUT function is designed to ensure that
thCLKOUT and tlCLKOUT timings are preserved when the
CLKOUT pin function is enabled, disabled or the
prescaler value is changed.
FIGURE 8-1:
CRYSTAL/CERAMIC RESONATOR OPERATION
FIGURE 8-2:
EXTERNAL CLOCK SOURCE
Note:
The maximum frequency on CLKOUT is
specified as 25 MHz (See Table 13-5)
C1
C2
XTAL
OSC2
RS(1)
OSC1
RF(2)
SLEEP
To internal logic
Note 1: A series resistor (RS) may be required for AT strip cut crystals.
2: The feedback resistor (RF ), is typically in the range of 2 to 10 M
Ω.
Clock from
external system
OSC1
OSC2
Open
(1)
Note 1: A resistor to ground may be used to reduce system noise. This may increase system current.
2: Duty cycle restrictions must be observed (see Table 12-1).
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PIC18F2580T-I/ML 功能描述:8位微控制器 -MCU 32 KB FL 1536 RAM 25 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC18F2580T-I/SO 功能描述:8位微控制器 -MCU 32 KB FL 1536 RAM 25 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC18F2585-E/SO 功能描述:8位微控制器 -MCU 48KB 3328 RAM w/ECAN RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC18F2585-E/SP 功能描述:8位微控制器 -MCU 48KB 3328 RAM w/ECAN RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC18F2585-H/SO 功能描述:8位微控制器 -MCU 48 KB Flash 3328 RAM 25 I/O w/ECAN RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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