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參數(shù)資料
| 型號： | ATA6285N-PNPW |
| 廠商： | ATMEL CORP |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, QCC32 |
| 封裝： | 5 X 5MM, QFN-32 |
| 文件頁數(shù)： | 51/121頁 |
| 文件大小： | 9917K |
| 代理商： | ATA6285N-PNPW |
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35
4958B–AUTO–11/10
Atmel ATA6285/ATA6286 [Preliminary]
3.7.5
Calibrated Internal Slow RC-Oscillator (SRC)
The calibrated internal SRC-Oscillator is a ultra low power oscillator providing a clock of 90 kHz.
During reset, hardware loads the calibration byte into the SRCCAL Register and thereby auto-
matically calibrates the SRC-Oscillator. Over a supply range of 1.9V to 3.6V and a temperature
range of –40°C to +85°C, the calibration gives a frequency of 90kHz ±10% (ensured by final
test). The oscillator can be calibrated to any frequency in the range of 81kHz – 99kHz within
±1% accuracy (typical value, not measured in final test) for a fixed supply voltage and tempera-
ture, by changing the SRCCAL register. This Oscillator can be used as Watchdog Oscillator,
Interval Timer, start measurement timer for Motion sensor, Reset Time-out and additionally also
as System clock.
3.7.5.1
Slow Frequency RC – Oscillator Calibration Register – SRCCAL
Bits 7..0 - SCAL7..0: Slow frequency RC-oscillator CALibration Value
The Oscillator Calibration Register is used to trim the Calibrated Internal FRC Oscillator to
remove process variations from the Oscillator frequency. The factory-calibrated value is auto-
matically written to this register during chip reset, giving an oscillator frequency of 90kHz. The
application software can write this register to change the oscillator frequency. The oscillator can
be calibrated to any frequency in the range of 81kHz to 99kHz within 1% accuracy for a fixed
supply voltage and temperature. Calibration outside that range is not guaranteed.
The SCAL7 bit determines the range of operation for the oscillator. Setting this bit to 0 gives the
lowest frequency range, setting this bit to 1 gives the highest frequency range. The two fre-
quency ranges are overlapping, in other words a setting of SRCCAL = 0x7F gives a higher
frequency than SRCCAL = 0x80.
3.7.6
Clock Output Buffer
The device can output the system clock on the PC1/CLKO pin. To enable the output, the
CKOUT Fuse bit has to be programmed. This mode is suitable when the chip clock is used to
drive other circuits on the system. The clock also will be output during reset, and the normal
operation of I/O pin will be overridden when the fuse is programmed. Any clock source, including
the internal RC Oscillators, can be selected when the clock is output on CLKO. If the System
Clock Prescaler is used, it is the divided system clock that is output.
Bit
7
6543
210
SCAL7 SCAL6
SCAL5
SCAL4
SCAL3
SCAL2
SCAL1
SCAL0
SRCCAL
Read/Write
R/W
Initial Value
0
0000
000
Table 3-8.
Device Clock Output Select Description
(1)
Device Clock Output
CKOUT Fuse
Clock Name
Description
PC1(CLKO)
1
CLK
disabled
0
CLK
enabled
Note:
1. For all fues
“1” means unprogrammed while “0” means programmed
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATA6285N-PNQW | 功能描述:射頻微控制器 - MCU IC LF, Cap. Sens. Interface RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:Si100x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:24 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:4 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LGA-42 安裝風(fēng)格:SMD/SMT 封裝:Tube |
| ATA6285-PNPW | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:TPMS Control and Transmitter IC |
| ATA6285-PNQW | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:TPMS Control and Transmitter IC |
| ATA6286 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:TPMS Control and Transmitter IC |
| ATA6286C-PNPW | 制造商:Atmel Corporation 功能描述:IC CTLR/XMITTER 433MHZ 32QFN 制造商:Atmel Corporation 功能描述:Active RFID AVR-uC, 125kHz + 433MHz |
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