- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄24782 > 933715220112 (NXP SEMICONDUCTORS) 16 X 4 OTHER FIFO, 120 ns, PDSO16 PDF資料下載
參數(shù)資料
| 型號： | 933715220112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | FIFO |
| 英文描述： | 16 X 4 OTHER FIFO, 120 ns, PDSO16 |
| 封裝： | 3.90 MM, PLASITC, MS-012AC, SOT-109-1, SO-16 |
| 文件頁數(shù)： | 14/25頁 |
| 文件大小： | 178K |
| 代理商： | 933715220112 |
21
ATtiny4/5/9/10 [DATASHEET]
8127F–AVR–02/2013
6.5
Register Description
6.5.1
CLKMSR – Clock Main Settings Register
Bit 7:2 – Res: Reserved Bits
These bits are reserved and always read zero.
Bit 1:0 – CLKMS[1:0]: Clock Main Select Bits
These bits select the main clock source of the system. The bits can be written at run-time to switch the source of
the main clock. The clock system ensures glitch free switching of the main clock source.
The main clock alternatives are shown in Table 6-3.
To avoid unintentional switching of main clock source, a protected change sequence must be followed to change
the CLKMS bits, as follows:
1.
Write the signature for change enable of protected I/O register to register CCP
2.
Within four instruction cycles, write the CLKMS bits with the desired value
6.5.2
OSCCAL – Oscillator Calibration Register
.
Bits 7:0
– CAL[7:0]: Oscillator Calibration Value
The oscillator calibration register is used to trim the calibrated internal oscillator and remove process variations
from the oscillator frequency. A pre-programmed calibration value is automatically written to this register during
chip reset, giving the factory calibrated frequency as specified in Table 16-2, “Calibration Accuracy of Internal RC
The application software can write this register to change the oscillator frequency. The oscillator can be calibrated
to frequencies as specified in Table 16-2, “Calibration Accuracy of Internal RC Oscillator,” on page 117. Calibration
outside the range given is not guaranteed.
The CAL[7:0] bits are used to tune the frequency of the oscillator. A setting of 0x00 gives the lowest frequency, and
a setting of 0xFF gives the highest frequency.
Bit
765
432
1
0
–
CLKMS1
CLKMS0
CLKMSR
Read/Write
R
R/W
Initial Value
0
Table 6-3.
Selection of Main Clock
CLKM1
CLKM0
Main Clock Source
0
Calibrated Internal 8 MHzOscillator
0
1
Internal 128 kHz Oscillator (WDT Oscillator)
1
0
External clock
11
Reserved
Bit
765
432
1
0
CAL7
CAL6
CAL5
CAL4
CAL3
CAL2
CAL1
CAL0
OSCCAL
Read/Write
R/W
Initial Value
X
相關PDF資料 |
PDF描述 |
|---|---|
| 935189070118 | 16 X 4 OTHER FIFO, 600 ns, PDSO16 |
| 935189960112 | 16 X 4 OTHER FIFO, 120 ns, PDSO16 |
| 935189350112 | 16 X 4 OTHER FIFO, 600 ns, PDSO16 |
| 933715220118 | 16 X 4 OTHER FIFO, 120 ns, PDSO16 |
| 935189350118 | 16 X 4 OTHER FIFO, 600 ns, PDSO16 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 93372 | 制造商:Harris Corporation 功能描述: |
| 933725100 | 制造商:Lumberg Automation 功能描述:CONNECTOR, ELKA 4012 K PG7 BLACK, STRAIGHT FEMALE SOCKET, 4 CONTACTS, SCREW 制造商:Hirschmann Electronics GmbH & Co Kg 功能描述:4way IP67 M12 rewireable straight skt,4A |
| 933726100 | 制造商:Lumberg Automation 功能描述:CONNECTOR, ELWIKA 4012 K PG 7 BLACK, M12, FEMALE RIGHT ANGLE, 4 POLE, FIXCON 制造商:Hirschmann Electronics GmbH & Co Kg 功能描述:4 way IP67 M12 rewireable r/a skt,4A PG7 |
| 933727100 | 制造商:Lumberg Automation 功能描述:CONNECTOR, ELST 4012 K PG 7 BLACK, M12, MALE STRAIGHT, 4 PIN, PG 7, BLACK 制造商:Hirschmann Electronics GmbH & Co Kg 功能描述:4way M12 rewireable straight plug,4A PG7 |
| 933728100 | 制造商:Lumberg Automation 功能描述:CONNECTOR, ELWIST 4012 K PG 7, M12, MALE RIGHT ANGLE, 4 POLE, BLACK, FIXCON 制造商:Hirschmann Electronics GmbH & Co Kg 功能描述:4way IP67 M12 rewireable r/a plug,4A PG7 |
發(fā)布緊急采購，3分鐘左右您將得到回復。