參數(shù)資料
型號(hào)： ADUC7032BSTZ-88-RL
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 92/120頁(yè)
文件大小： 0K
描述： IC MCU 96K FLASH DUAL 48LQFP
標(biāo)準(zhǔn)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(chǔ)器容量： 96KB（48K x 16）
程序存儲(chǔ)器類(lèi)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)
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ADuC7032-8L
Rev. A | Page 73 of 120
TIMER1
Timer1 is a 32-bit general-purpose timer, count-down or count-
up, with a programmable prescalar. The prescalar source can be
the low power 32.768 kHz oscillator, the core clock, or one of
two external GPIOs. This source can be scaled by a factor of 1,
16, 256, or 32,768. 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 (ignoring external GPIO).
The counter can be formatted as a standard 32-bit value or as
hours:minutes:seconds:hundreths.
Timer1 has a capture register (T1CAP) that can be triggered by
a selected IRQ source initial assertion. Once triggered, the
current timer value is copied to T1CAP and the timer keeps
running. This feature can be used to determine the assertion of
an event with increased accuracy.
The Timer1 interface consists of five MMRs.
T1LD, T1VAL, and T1CAP are 32-bit registers that hold
32-bit unsigned integers. T1VAL and T1CAP are read only.
T1CLRI is an 8-bit register. Writing any value to this
register clears the Timer1 interrupt.
T1CON is the configuration MMR described in Table 55.
Timer1 features a postscalar. This allows the user to count
between 1 and 256 the number of Timer1 timeouts. To activate
the postscalar, the user sets Bit 23 and writes the desired number to
count into Bit 24 to Bit 31 of T1CON. Once that number of
timeouts has been reached, Timer1 generates an interrupt if
T1CON[18] is set.
Note that if the part is in a low power mode and Timer1 is clocked
from the GPIO or low power oscillator source, Timer1 continues to
operate.
Timer1 reloads the value from T1LD either when Timer1
overflows or immediately when T1CLRI is written.
Timer1 Load Register
Name:
T1LD
Address:
0xFFFF0320
Default Value:
0x00000
Access:
Write only
Function:
This 32-bit register holds the 32-bit value that is
loaded into the counter.
Timer1 Clear Register
Name:
T1CLRI
Address:
0xFFFF032C
Access:
Write only
Function:
This 32-bit, write-only MMR is written (with any
value) by user code to clear the interrupt.
Timer1 Value Register
Name:
T1VAL
Address:
0xFFFF0324
Default Value:
0xFFFFFFFF
Access:
Read only
Function:
This 32-bit register holds the current value of Timer1.
TIMER1
VALUE
LOW POWER
32.768kHz OSCILLATOR
CORE
CLOCK FREQUENCY
GPIO
PRESCALAR
1, 16, 256, OR 32768
TIMER1 IRQ
32-BIT
UP/DOWN COUNTER
8-BIT
POSTSCALAR
32-BIT LOAD
CAPTURE
IRQ[31:0]
05
98
6-
03
1
Figure 33. Timer1 Block Diagram
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