參數(shù)資料
型號： ATAM893T-TKSYD
廠商： Atmel
文件頁數(shù)： 7/98頁
文件大?。?/td> 0K
描述： IC MCU FLASH 4K MTP 20SSOP
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
15
4680C–4BMCU–01/05
ATAM893-D
VIM
Voltage Interrupt Mask bit
VIM = 0, voltage monitor interrupt is enabled
VIM = 1, voltage monitor interrupt is disabled
VMS
Voltage Monitor Status bit
VMS = 0, the voltage at the comparator input is below V
Ref
VMS = 1, the voltage at the comparator input is above VRef
Figure 4-10. Internal Supply Voltage Supervisor
Figure 4-11. External Input Voltage Supervisor
4.5
Clock Generation
4.5.1
Clock Module
The ATAM893-D contains a clock module with 4 different internal oscillator types: two RC-oscil-
lators, one 4-MHz crystal oscillator and one 32-kHz crystal oscillator. The pins OSC1 and OSC2
are the interface to connect a crystal either to the 4-MHz, or to the 32-kHz crystal oscillator.
OSC1 can be used as input for external clocks or to connect an external trimming resistor for the
RC-oscillator 2. All necessary circuitry except the crystal and the trimming resistor is integrated
on-chip. One of these oscillator types or an external input clock can be selected to generate the
system clock (SYSCL).
In applications that do not require exact timing, it is possible to use the fully integrated RC-oscil-
lator 1 without any external components. The RC-oscillator 1 center frequency tolerance is
better than ±50%. The RC-oscillator 2 is a trimmable oscillator whereby the oscillator frequency
can be trimmed with an external resistor attached between OSC1 and V
DD. In this configuration,
the RC-oscillator 2 frequency can be maintained stable to within a tolerance of ±15% over the
full operating temperature and voltage range.
V
DD
Low threshold
Middle threshold
High threshold
VMS = 1
Low threshold
Middle threshold
High threshold
VMS = 0
3.0 V
2.6 V
2.2 V
1.3 V
VMI
VMS = 1
VMS = 0
Positive slope
Negative slope
VMS = 1
VMS = 0
Interrupt negative slope
Interrupt positive slope
Internal reference level
t
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