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參數(shù)資料
| 型號(hào)： | T48C862x-Rf-TNQ |
| 廠商： | Atmel Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | Microcontroller with UHF ASK/FSK Transmitter |
| 中文描述： | 微控制器，帶有超高頻ASK / FSK發(fā)射器 |
| 文件頁(yè)數(shù)： | 26/108頁(yè) |
| 文件大?。?/td> | 1023K |
| 代理商： | T48C862X-RF-TNQ |
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26
T48C862-R4 [Preliminary]
4551C–4BMCU–01/04
Figure 21.
RC-oscillator 1
External Input Clock
The OSC1 or OSC2 (mask option) can be driven by an external clock source provided it
meets the specified duty cycle, rise and fall times and input levels. Additionally, the
external clock stage contains a supervisory circuit for the input clock. The supervisor
function is controlled via the OS1, OS0 bit in the SC register and the CCS bit in the
CM register. If the external input clock is missing for more than 1 ms and CCS = 0 is set
in the CM register, the supervisory circuit generates a hardware reset.
Figure 22.
External Input Clock
Table 5.
Supervisor Function Control Bits
OS1
1
1
x
RC-oscillator 2 with External
Trimming Resistor
The RC-oscillator 2 is a high resolution trimmable oscillator whereby the oscillator fre-
quency can be trimmed with an external resistor between OSC1 and V
DD
. In this
configuration, the RC-oscillator 2 frequency can be maintained stable with a tolerance of
±10% 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 connecting a
resistor R
ext
= 360 k
(see Figure 23 on page 27).
RC
oscillator 1
RcOut1
Stop
Control
RcOut1
Osc-Stop
OS0
1
1
0
CCS
0
1
x
Supervisor Reset Output (Res)
Enable
Disable
Disable
Ext. input clock
ExOut
Stop
Ext.
Clock
RcOut1
Osc-Stop
ExIn
CCS
Res
OSC1
OSC2
Clock monitor
Ext.
Clock
or
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T48C862x-Rf-TNS | Microcontroller with UHF ASK/FSK Transmitter |
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| T48C893-TK | The multiple times programmable (MTP) version for the MARC4 ROM types |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T48C862X-RF-TNS | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Microcontroller with UHF ASK/FSK Transmitter |
| T48C893 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:The multiple times programmable (MTP) version for the MARC4 ROM types |
| T48C893-TK | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:The multiple times programmable (MTP) version for the MARC4 ROM types |
| T48C893-TKQ | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:The multiple times programmable (MTP) version for the MARC4 ROM types |
| T48D | 制造商:WELWYN 制造商全稱:Welwyn Components Limited 功能描述:High Voltage Precision Thick Film Resistors |
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