參數(shù)資料
型號: ADUC7036CCPZ
廠商: Analog Devices Inc
文件頁數(shù): 109/132頁
文件大?。?/td> 0K
描述: IC MCU 96K FLASH DUAL 48LFCSP
標準包裝: 1
系列: MicroConverter® ADuC7xxx
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 20.48MHz
連通性: LIN,SPI,UART/USART
外圍設備: PSM,溫度傳感器,WDT
輸入/輸出數(shù): 9
程序存儲器容量: 96KB(48K x 16)
程序存儲器類型: 閃存
RAM 容量: 1.5K x 32
電壓 - 電源 (Vcc/Vdd): 3.5 V ~ 18 V
數(shù)據(jù)轉換器: A/D 2x16b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 115°C
封裝/外殼: 48-VFQFN 裸露焊盤,CSP
包裝: 托盤
ADuC7036
Rev. C | Page 78 of 132
TIMER2—WAKE-UP TIMER
Timer2 is a 32-bit wake-up up/down counter timer, with a pro-
grammable prescaler. The prescaler is clocked directly from one
of four clock sources: namely, the core clock (which is the default
selection), the low power 32.768 kHz oscillator, the external
32.768 kHz watch crystal, or the precision 32.768 kHz oscillator.
The selected clock source can be scaled by a factor of 1, 16, 256,
or 32,768. The wake-up timer continues to run when the core
clock is disabled. When the core is operating at 20.48 MHz and
at CD = 0 with a prescaler of 1, a minimum resolution of 48.83 ns
results.
The counter can be formatted as a plain 32-bit value or as time
expressed as hours:minutes:seconds:hundredths.
Timer2 reloads the value from T2LD when Timer2 overflows.
The Timer2 interface consists of four MMRS: T2LD, T2VAL,
T2CLRI, and T2CON. T2LD and T2VAL are 32-bit registers
and hold 32-bit unsigned integers. T2VAL is a read only
register. T2CLRI is an 8-bit register. Writing any value to this
register clears the Timer2 interrupt. T2CON is a configuration
MMR and is described in Table 55.
Timer2 Load Register
Name: T2LD
Address: 0xFFFF0340
Default Value: 0x00000000
Access: Read/write
Function: This 32-bit register holds the 32-bit value that is
loaded into the counter.
Timer2 Clear Register
Name: T2CLRI
Address: 0xFFFF034C
Access: Write only
Function: This 8-bit, write only MMR is written (with any value)
by user code to clear the interrupt.
Timer2 Value Register
Name: T2VAL
Address: 0xFFFF0344
Default Value: 0xFFFFFFFF
Access: Read only
Function: This 32-bit register holds the current value of Timer2.
TIMER2 IRQ
32-BIT
UP/DOWN COUNTER
PRECISION
32.768kHz OSCILLATOR
LOW POWER
32.768kHz OSCILLATOR
CORE
CLOCK
EXTERNAL 32.768kHz
WATCH CRYSTAL
32-BIT LOAD
TIMER2
VALUE
PRESCALER
1, 16, 256, OR 32,768
0
74
-03
4
Figure 37. Timer2 Block Diagram
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