參數(shù)資料
型號(hào)： T89C5115-TISIM
廠商： Atmel
文件頁數(shù)： 7/113頁
文件大小： 0K
描述： IC 8051 MCU FLASH 16K 28SOIC
標(biāo)準(zhǔn)包裝： 27
系列： 89C
核心處理器： 8051
芯體尺寸： 8-位
速度： 40MHz
連通性： UART/USART
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 20
程序存儲(chǔ)器容量： 16KB（16K x 8）
程序存儲(chǔ)器類型： 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量： 512 x 8
電壓 - 電源 (Vcc/Vdd)： 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 ~ 85°C
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
包裝： 管件
dsPIC33FJ12MC201/202
DS70265E-page 104
2007-2011 Microchip Technology Inc.
8.1
CPU Clocking System
The dsPIC33FJ12MC201/202 devices provide seven
system clock options:
Fast RC (FRC) Oscillator
FRC Oscillator with PLL
Primary (XT, HS or EC) Oscillator
Primary Oscillator with PLL
Secondary (LP) Oscillator
Low-Power RC (LPRC) Oscillator
FRC Oscillator with postscaler
8.1.1
SYSTEM CLOCK SOURCES
8.1.1.1
Fast RC
The Fast RC (FRC) internal oscillator runs at a nominal
frequency of 7.37 MHz. User software can tune the
FRC frequency. User software can optionally specify a
factor (ranging from 1:2 to 1:256) by which the FRC
clock frequency is divided. This factor is selected using
the FRCDIV<2:0> (CLKDIV<10:8>) bits.
8.1.1.2
Primary
The primary oscillator can use one of the following as
its clock source:
XT (Crystal): Crystals and ceramic resonators in
the range of 3 MHz to 10 MHz. The crystal is
connected to the OSC1 and OSC2 pins.
HS (High-Speed Crystal): Crystals in the range of
10 MHz to 40 MHz. The crystal is connected to
the OSC1 and OSC2 pins.
EC (External Clock): The external clock signal is
directly applied to the OSC1 pin.
8.1.1.3
Secondary
The secondary (LP) oscillator is designed for low power
and uses a 32.768 kHz crystal or ceramic resonator.
The LP oscillator uses the SOSCI and SOSCO pins.
8.1.1.4
Low-Power RC
The Low-Power RC (LPRC) internal oscIllator runs at a
nominal frequency of 32.768 kHz. It is also used as a
reference clock by the Watchdog Timer (WDT) and
Fail-Safe Clock Monitor (FSCM).
8.1.1.5
FRC
The clock signals generated by the FRC and primary
oscillators can be optionally applied to an on-chip
Phase-Locked Loop (PLL) to provide a wide range of
output
frequencies
for
device
operation.
PLL
configuration is described in Section 8.1.3 “PLL
The FRC frequency depends on the FRC accuracy
(see Table 24-18) and the value of the FRC Oscillator
Tuning register (see Register 8-4).
8.1.2
SYSTEM CLOCK SELECTION
The oscillator source used at a device Power-on
Reset event is selected using Configuration bit
settings. The oscillator Configuration bit settings are
located in the Configuration registers in the program
for further details.) The Initial Oscillator
Selection
Configuration
bits,
FNOSC<2:0>
(FOSCSEL<2:0>), and the Primary Oscillator Mode
Select
Configuration
bits,
POSCMD<1:0>
(FOSC<1:0>), select the oscillator source that is used
at a Power-on Reset. The FRC primary oscillator is
the default (unprogrammed) selection.
The Configuration bits allow users to choose among 12
different clock modes, shown in Table 8-1.
The output of the oscillator (or the output of the PLL if
a PLL mode has been selected) FOSC is divided by 2 to
generate the device instruction clock (FCY) and the
peripheral clock time base (FP). FCY defines the
operating speed of the device, and speeds up to 40
MHz are supported by the dsPIC33FJ12MC201/202
architecture.
Instruction execution speed or device operating
frequency, FCY, is given by:
EQUATION 8-1:
DEVICE OPERATING
FREQUENCY
FCY
FOSC
2
-------------
=
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T89C5115-TISUM 功能描述:IC 8051 MCU FLASH 16K 28SOIC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:89C 標(biāo)準(zhǔn)包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:8KB（4K x 16） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR)
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