參數(shù)資料
型號： ADUC7032BSTZ-8V-RL
廠商： Analog Devices Inc
文件頁數(shù)： 105/128頁
文件大小： 0K
描述： IC BATTERY SENSOR PREC 48-LQFP
標(biāo)準(zhǔn)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(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： 標(biāo)準(zhǔn)包裝
其它名稱： ADUC7032BSTZ-8V-RLDKR
Preliminary Technical Data
ADuC7032
Rev. PrD | Page 78 of 128
TIMER0 – LIFE-TIME TIMER
Timer0 is a general purpose 48-bit count-up, or a 16-bit count
up/down timer with a programmable prescalar. Timer0 may be
clocked from either the Core clock, the Low Power 32.768kHz
Oscillator
, the Precision 32.768kHz Oscillator or an external
32.768kHz crystal,
with a prescalar of 1,16, 256 or 32768. This
gives a minimum resolution of 48.83ns when the core is
operating at 20.48MHz, and with a prescalar of 1.
In 48-bit mode, Timer0 counts up from zero. The current
counter value may be read from T0VAL0 and T0VAL1.
In 16-Bit mode,Timer0 may count up or count down. A 16-bit
value may be written to T0LD which will be loaded into the
counter. The current counter value may be read from T0VAL0.
Timer0 has a capture register (T0CAP), which may be triggered
by a selected IRQ’s source initial assertion. Once triggered, the
current timer value is copied to T0CAP, and the timer keeps
running. This feature can be used to determine the assertion of
an event with more accuracy than by servicing an interrupt
alone.
Timer0 reloads the value from T0LD either when TIMER0
overflows, or immediately when T0CLRI is written.
Timer0 interface consists of six MMRS:
- T0LD is a 16-bit register which holds the 16 bit value that is
loaded into the counter. Only available in 16-bit mode.
- T0CAP is a 16-bit register which holds the 16-bit value
captured by an enabled IRQ event. Only available in 16-bit
mode.
- T0VAL0/T0VAL1 are 16-bit and 32-bit registers which hold
the 16 least significant bits and 32 most significant bits
respectively. T0VAL0 and T0VAL1 is read-only. In 16-bit
mode 16-bit T0VAL0 is used. In 48-bit mode both 16-bit
T0VAL0 and 32-bit T0VAL1 are used.
- T0CLRI is an 8-bit register. Writing any value to this register
will clear the interrupt. Only available in 16-bit mode.
- T0CON
is the configuration MMR described in Table 44.
05
99
4-
03
0
TIMER0
VALUE
LOW POWER
32.768kHz OSCILLATOR
PRECISION
32.768kHz OSCILLATOR
EXTERNAL 32.768kHz
WATCH CRYSTAL
CORE
CLOCK FREQUENCY
PRESCALER
1, 16, 256, OR 32768
TIMER0 IRQ
48-BIT UP COUNTER
16-BIT UP/DOWN COUNTER
16-BIT LOAD
CAPTURE
IRQ[31:0]
Figure 30 : Timer 0 block diagram
Timer0 Value Register :
Name :
T0VAL0/T0VAL1
Address :
0xFFFF0304, 0xFFFF0308
Default Value :
0x00, 0x00
Access :
Read Only
Function :
T0VAL0 and T0VAL1 are 16-bit and 32-bit
registers which hold the 16 least significant bits and 32 most
significant bits respectively. T0VAL0 and T0VAL1 is read-only.
In 16-bit mode 16-bit T0VAL0 is used. In 48-bit mode both 16-
bit T0VAL0 and 32-bit T0VAL1 are used.
Timer0 Capture Register :
Name :
T0CAP
Address :
0xFFFF0314
Default Value :
0x00
Access :
Read Only
Function :
This is a 16-bit register which holds the 16-
bit value captured by an enabled IRQ event. Only available in
16-bit mode.
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