參數(shù)資料
型號： ADUC7032BSTZ-88-RL
廠商： Analog Devices Inc
文件頁數(shù)： 94/120頁
文件大小： 0K
描述： IC MCU 96K FLASH DUAL 48LQFP
標準包裝： 2,000
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(shè)備： POR，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(zhuǎn)換器： A/D 2x16b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 105°C
封裝/外殼： 48-LQFP
包裝： 帶卷 (TR)
ADuC7032-8L
Rev. A | Page 75 of 120
TIMER2—WAKE-UP TIMER
Timer2 is a 32-bit wake-up timer, count-down or count-up,
with a programmable prescalar. The prescalar is clocked directly
from one of four clock sources, namely, the core clock (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. This gives a minimum resolution of 48.83 ns
when operating at CD zero; the core is operating at 20.48 MHz,
and with a prescalar of 1. Capture of the current timer value is
enabled if the Timer2 interrupt is enabled via IRQEN[4].
The counter can be formatted as plain 32-bit value or as
hours:minutes:seconds:hundreths.
Timer2 reloads the value from T2LD either when TIMER2
overflows, or immediately when T2CLRI is written.
The Timer2 interface consists of four MMRs.
T2LD and T2VAL: 32-bit registers that hold 32-bit
unsigned integers. T2VAL is read only.
T2CLRI: 8-bit register. Writing any value to this register
clears the Timer2 interrupt.
T2CON: configuration MMR described in Table 56.
Timer2 Load Register
Name:
T2LD
Address:
0xFFFF0340
Default Value:
0x00000000
Access:
Read/write
Function:
This 32-bit register holds the 32-bit value 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.
PRESCALAR
1, 16, 256, OR 32768
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
0
59
86
-03
2
Figure 34. Timer2 Block Diagram
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