參數(shù)資料
型號: ADUC7034BCPZ-RL
廠商: Analog Devices Inc
文件頁數(shù): 99/136頁
文件大?。?/td> 0K
描述: IC MCU FLASH 32K ANLG IO 48LFCSP
標準包裝: 2,500
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: 32KB(16K x 16)
程序存儲器類型: 閃存
RAM 容量: 1K 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 ~ 115°C
封裝/外殼: 48-VFQFN 裸露焊盤,CSP
包裝: 帶卷 (TR)
ADuC7034
Rev. B | Page 65 of 136
POWCON Register
Name:
POWCON
Address:
0xFFFF0408
Default Value:
0x079
Access:
Read/write
Function:
This 8-bit register allows user code to dynamically enter various low power modes and modify the clock divider that
controls the speed of the ARM7TDMI core.
Table 45. POWCON MMR Bit Designations
Bit
Description
7
Precision 131 kHz input enable.
Set by the user to enable the precision 131 kHz input enable. The precision 131 kHz oscillator must also be enabled
using HVCFG0[6]. Setting this bit increases current consumption by approximately 50 μA and should be disabled when
not in use.
Cleared by the user to power down the precision 131 kHz input enable.
6
XTAL power-down.
Set by the user to enable the external crystal circuitry.
Cleared by the user to power down the external crystal circuitry.
5
PLL power-down. Timer peripherals power down if driven from the PLL output clock. Timers driven from an active clock
source remain in normal power mode.
Set by default, or set by hardware upon a wake-up event.
Cleared to 0 to power down the PLL. The PLL cannot be powered down if either the core or peripherals are enabled;
therefore, Bit 3, Bit 4, and Bit 5 must be cleared simultaneously.
4
Peripherals power-down. The peripherals that are powered down by this bit are as follows: SRAM, Flash/EE memory and
GPIO interfaces, and SPI and UART serial ports.
Set by default, or set by hardware upon a wake-up event. The wake-up timer (Timer2) can be active if the device is
driven from the low power oscillator even if this bit is set.
Cleared to power down the peripherals. The peripherals cannot be powered down if the core is enabled; therefore, Bit 3
and Bit 4 must be cleared simultaneously. LIN can respond to wake-up events even if this bit is cleared.
3
Core power-down. If user code powers down the MCU, include a dummy MCU cycle after the power-down command is
written to POWCON.
Set by default, or set by hardware on a wake-up event.
Cleared to power down the ARM core.
2 to 0
Core clock divider (CD) bits.
000 = 20.48 MHz, 48.83 ns.
001 = 10.24 MHz, 97.66 ns. (This is the default setting at power up.)
010 = 5.12 MHz, 195.31 ns.
011 = 2.56 MHz, 390.63 ns.
100 = 1.28 MHz, 781.25 ns.
101 = 640 kHz, 1.56 μs.
110 = 320 kHz, 3.125 μs.
111 = 160 kHz, 6.25 μs.
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