參數(shù)資料
型號: ATAM893T-TKS
廠商: Atmel
文件頁數(shù): 11/98頁
文件大?。?/td> 0K
描述: IC MON TIRE-PRESS ATARX9X SER
標(biāo)準(zhǔn)包裝: 830
系列: MARC4
核心處理器: MARC4
芯體尺寸: 4-位
速度: 4MHz
連通性: SSI(2 線,3 線)
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 16
程序存儲器容量: 4KB(4K x 8)
程序存儲器類型: EEPROM
EEPROM 大?。?/td> 64 x 16
RAM 容量: 256 x 4
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 6.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 20-SOIC(0.209",5.30mm 寬)
包裝: 管件
19
4680C–4BMCU–01/05
ATAM893-D
Figure 4-17. Ceramic Resonator
Note:
Both, the 4-MHz and the 32-kHz crystal oscillator, use an integrated 14 stage divider circuit to sta-
bilize oscillation before the oscillator output is used as system clock. This results in an additional
delay of about 4 ms for the 4-MHz crystal and about 500 ms for the 32-kHz crystal.
4.5.2.5
32-kHz Oscillator
Some applications require long-term time keeping or low resolution timing. In this case, an on-
chip, low power 32-kHz crystal oscillator can be used to generate both the SUBCL and the
SYSCL. In this mode, power consumption is greatly reduced. The 32-kHz crystal oscillator can
not be stopped while the power-down mode is in operation.
Figure 4-18. 32-kHz Crystal Oscillator
Note:
Both, the 4-MHz and the 32-kHz crystal oscillator, use an integrated 14 stage divider circuit to sta-
bilize oscillation before the oscillator output is used as system clock. This results in an additional
delay of about 4 ms for the 4-MHz crystal and about 500 ms for the 32-kHz crystal.
4.5.3
Clock Management
The clock management register controls the system clock divider and synchronization stage.
Writing to this register triggers the synchronization cycle.
4-MHz
oscillator
4Out
Stop
4Out
Osc-Stop
OSC1
OSC2
*
Oscin
C
1
*
C
2
Oscout
Cer.
Res
*
flash option
C
3
C
4
32-kHz
oscillator
32Out
OSC1
OSC2
*
Oscin
C
1
*
C
2
Oscout
XTAL
32 kHz
*
flash option
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