參數(shù)資料
型號: ATMEGA103-6AI
廠商: Atmel
文件頁數(shù): 75/141頁
文件大小: 0K
描述: IC MCU 128K 6MHZ A/D IT 64TQFP
產(chǎn)品培訓模塊: megaAVR Introduction
標準包裝: 90
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 6MHz
連通性: SPI,UART/USART
外圍設備: POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 128KB(64K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 4K x 8
RAM 容量: 4K x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 8x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-TQFP
包裝: 托盤
配用: ATSTK501-ND - ADAPTER KIT FOR 64PIN AVR MCU
39
ATmega103(L)
0945I–AVR–02/07
The clock source for Timer/Counter0 prescaler is named PCK0. PCK0 is by default con-
nected to the main system clock CK. Observe that CPU clock frequency can be lower
than the XTAL frequency if the XTAL divider is enabled. By setting the AS0 bit in ASSR,
Timer/Counter0 prescaler is asynchronously clocked from the TOSC1 pin. This enables
use of Timer/Counter0 as a Real Time Clock (RTC). A crystal can be connected
between the TOSC1 and TOSC2 pins to serve as an independent clock source for
Timer/Counter0. This Oscillator is optimized for use with a 32.768 kHz crystal.
8-bit Timer/Counters
T/C0 and T/C2
Figure 30 shows the block diagram for Timer/Counter0. Figure 31 shows the block dia-
gram for Timer/Counter2.
Figure 30. Timer/Counter0 Block Diagram
8-BIT DATA BUS
8-BIT ASYNCH T/C0 DATA BUS
ASYNCH. STATUS
REGISTER (ASSR)
TIMER INT. FLAG
REGISTER (TIFR)
TIMER/COUNTER0
(TCNT0)
SYNCH UNIT
8-BIT COMPARATOR
OUTPUT COMPARE
REGISTER0 (OCR0)
TIMER INT. MASK
REGISTER (TIMSK)
0
7
T/C CLK SOURCE
UP/DOWN
T/C CLEAR
CONTROL
LOGIC
OCF0
TO
V
0
TO
V
1
OCF2A
OCF2B
ICF1
TO
V
2
OCF2
OCF0
TO
V
0
OCIE0
T
OIE0
T
OIE1
OCIE1A
OCIE1B
TICIE1
T
OIE2
OCIE2
OCR0UB
TC0UB
ICR0UB
PCK0
CK
TCK0
T/C0 OVER-
FLOW IRQ
T/C0 COMPARE
MATCH IRQ
T/C0 CONTROL
REGISTER (TCCR0)
CS02
COM01
PWM0
AS0
CS01
COM00
CS00
CTC0
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