參數(shù)資料
型號(hào): ATAM893T-TKSYD
廠商: Atmel
文件頁(yè)數(shù): 10/98頁(yè)
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(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 16
程序存儲(chǔ)器容量: 4KB(4K x 8)
程序存儲(chǔ)器類(lèi)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
18
4680C–4BMCU–01/05
ATAM893-D
4.5.2.3
RC-oscillator 2 with External Trimming Resistor
The RC-oscillator 2 is a high resolution trimmable oscillator whereby the oscillator frequency can
be trimmed with an external resistor between OSC1 and V
DD. In this configuration, the RC-oscil-
lator 2 frequency can be maintained stable with a tolerance of
±15%/-20% over the full operating
temperature and a voltage range V
DD from 2.5 V to 6.0 V.
For example: An output frequency at the RC-oscillator 2 of 2 MHz can be obtained by connect-
ing a resistor R
ext = 360 k (see Figure 4-15).
Figure 4-15. RC-oscillator 2
4.5.2.4
4-MHz Oscillator
The ATAM893-D 4-MHz oscillator options need a crystal or ceramic resonator connected to the
OSC1 and OSC2 pins to establish oscillation. All the necessary oscillator circuitry, with the
exception of the actual crystal, resonator, C
3 and C4 are integrated on-chip.
Figure 4-16. 4-MHz 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.
Table 4-5.
Supervisor Function Control Bits
OS1
OS0
CCS
Supervisor Reset Output (Res)
110
Enable
111
Disable
x
0
x
Disable
RC-oscillator 2
RcOut2
Stop
RcOut2
Osc-Stop
R
Trim
OSC1
OSC2
R
ext
V
DD
4-MHz
oscillator
4Out
OSC1
OSC2
*
Oscin
C
1
*
C
2
Oscout
XTAL
4 MHz
*
flash option
Stop
Osc-Stop
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