参数资料
型号: ADUC7032BSTZ-8V-RL
厂商: Analog Devices Inc
文件页数: 110/128页
文件大小: 0K
描述: IC BATTERY SENSOR PREC 48-LQFP
标准包装: 1
系列: MicroConverter® ADuC7xxx
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 20.48MHz
连通性: LIN,SPI,UART/USART
外围设备: POR,PSM,温度传感器,WDT
输入/输出数: 9
程序存储器容量: 96KB(48K x 16)
程序存储器类型: 闪存
RAM 容量: 1.5K x 32
电压 - 电源 (Vcc/Vdd): 3.5 V ~ 18 V
数据转换器: A/D 2x16b
振荡器型: 内部
工作温度: -40°C ~ 105°C
封装/外壳: 48-LQFP
包装: 标准包装
其它名称: ADUC7032BSTZ-8V-RLDKR
Preliminary Technical Data
ADuC7032
Rev. PrD | Page 82 of 128
TIMER2 - WAKE-UP TIMER
Timer2 is a 32-bit wake-up timer, count-down or count-up,
with a programmable prescalar. The pre-scalar is clocked
directly from 1 of 4 clock sources, namely, the Core Clock
(default selection), the Low Power 32.768kHz Oscillator,
External 32.768kHz Watch Crystal, or the Precision 32.768kHz
Oscillator. The selected clock source can be scaled by a factor of
1, 16, 256 or 32768. The wake-up timer will continue to run
when the core clock is disabled. This gives a minimum
resolution of 48.83ns when operating at CD zero, the core is
operating at 20.48MHz, 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.
Timer2 interface consists of four MMRS:
- T2LD and T2VAL are 32-bit registers and hold 32-bit
unsigned integers. T2VAL is read-only.
- T2CLRI is an 8-bit register. Writing any value to this register
will clear the timer2 interrupt.
- T2CON is the configuration MMR described in Table 36
below.
Timer2 Load Registers:
Name :
T2LD
Address :
0xFFFF0340
Default Value :
0x00000
Access :
Write Only
Function :
T2LD is a 32 bit register which holds the 32
bit value that is loaded into the counter.
Timer2 Clear Register :
Name :
T2CLRI
Address :
0xFFFF034C
Default Value :
0xFF
Access :
Write Only
Function :
This 32-bit, write-only MMR is written
(with any value) by user code to refresh(reload) Timer2.
Timer2 Value Register :
Name :
T2VAL
Address :
0xFFFF0344
Default Value :
0xFFFFFFFF
Access :
Read Only
Function :
T2VAL is a 32-bit register which holds the
current value of Timer2
0
59
94
-03
2
PRESCALER
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
Figure 32 : Timer 2 block diagram
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