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| 型號(hào)： | ATMEGA328P-15MZ |
| 廠商： | Atmel |
| 文件頁(yè)數(shù)： | 17/83頁(yè) |
| 文件大小： | 0K |
| 描述： | MCU AVR 32K FLASH 15MHZ 32-QFN |
| 產(chǎn)品培訓(xùn)模塊： | megaAVR Introduction |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | AVR® ATmega |
| 核心處理器： | AVR |
| 芯體尺寸： | 8-位 |
| 速度： | 16MHz |
| 連通性： | I²C，SPI，UART/USART |
| 外圍設(shè)備： | 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 23 |
| 程序存儲(chǔ)器容量： | 32KB（16K x 16） |
| 程序存儲(chǔ)器類型： | 閃存 |
| EEPROM 大小： | 1K x 8 |
| RAM 容量： | 2K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 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： | 32-VFQFN 裸露焊盤 |
| 包裝： | 剪切帶 (CT) |
| 其它名稱： | ATMEGA328P-15MZCT |
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2010-2012 Microchip Technology Inc.
DS41413C-page 183
PIC12(L)F1822/PIC16(L)F1823
21.7
Timer1 Interrupt
The Timer1 register pair (TMR1H:TMR1L) increments
to FFFFh and rolls over to 0000h. When Timer1 rolls
over, the Timer1 interrupt flag bit of the PIR1 register is
set. To enable the interrupt on rollover, you must set
these bits:
TMR1ON bit of the T1CON register
TMR1IE bit of the PIE1 register
PEIE bit of the INTCON register
GIE bit of the INTCON register
The interrupt is cleared by clearing the TMR1IF bit in
the Interrupt Service Routine.
21.8
Timer1 Operation During Sleep
Timer1 can only operate during Sleep when setup in
Asynchronous Counter mode. In this mode, an external
crystal or clock source can be used to increment the
counter. To set up the timer to wake the device:
TMR1ON bit of the T1CON register must be set
TMR1IE bit of the PIE1 register must be set
PEIE bit of the INTCON register must be set
T1SYNC bit of the T1CON register must be set
TMR1CS bits of the T1CON register must be
configured
T1OSCEN bit of the T1CON register must be
configured
The device will wake-up on an overflow and execute
the next instructions. If the GIE bit of the INTCON
register is set, the device will call the Interrupt Service
Routine.
Timer1 oscillator will continue to operate in Sleep
regardless of the T1SYNC bit setting.
21.9
ECCP/CCP Capture/Compare Time
Base
The CCP1 module uses the TMR1H:TMR1L register
pair as the time base when operating in Capture or
Compare mode.
In Capture mode, the value in the TMR1H:TMR1L
register pair is copied into the CCPR1H:CCPR1L
register pair on a configured event.
In Compare mode, an event is triggered when the value
CCPR1H:CCPR1L register pair matches the value in
the TMR1H:TMR1L register pair. This event can be a
Special Event Trigger.
For
more
information,
see
21.10 ECCP/CCP Special Event Trigger
When any of the CCP’s are configured to trigger a spe-
cial event, the trigger will clear the TMR1H:TMR1L reg-
ister pair. This special event does not cause a Timer1
interrupt. The CCP module may still be configured to
generate a CCP interrupt.
In this mode of operation, the CCPR1H:CCPR1L
register pair becomes the period register for Timer1.
Timer1 should be synchronized and FOSC/4 should be
selected as the clock source in order to utilize the Spe-
cial Event Trigger. Asynchronous operation of Timer1
can cause a Special Event Trigger to be missed.
In the event that a write to TMR1H or TMR1L coincides
with a Special Event Trigger from the CCP, the write will
take precedence.
For more information, see Section 16.2.5 “Special
.
FIGURE 21-2:
TIMER1 INCREMENTING EDGE
Note:
The TMR1H:TMR1L register pair and the
TMR1IF bit should be cleared before
enabling interrupts.
T1CKI = 1
when TMR1
Enabled
T1CKI = 0
when TMR1
Enabled
Note 1:
Arrows indicate counter increments.
2:
In Counter mode, a falling edge must be registered by the counter prior to the first incrementing rising edge of the clock.
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| ATMEGA328P-AU | 功能描述:8位微控制器 -MCU 32KB In-system Flash 20MHz 1.8V-5.5V 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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