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參數資料
| 型號： | DC1562A-B |
| 廠商： | Linear Technology |
| 文件頁數： | 3/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL LTC6991 |
| 設計資源： | DC1562A Design Files DC1562A Schematic |
| 特色產品： | TimerBlox? |
| 標準包裝： | 1 |
| 系列： | TimerBlox® |
| 主要目的： | 計時，時鐘振蕩器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | LTC6991 |
| 主要屬性： | 1Hz 固定頻率 |
| 次要屬性： | 2.25 V ~ 5.5 V 電源 |
| 已供物品： | 板 |
| 相關產品： | LTC6991MPS6#TRPBF-ND - IC OSCILLATOR RESET LF TSOT23-6 LTC6991MPS6#TRMPBF-ND - IC OSCILLATOR RESET LF TSOT23-6 LTC6991IS6#TRPBF-ND - IC OSC SILICON 977HZ TSOT23-6 LTC6991IDCB#TRPBF-ND - IC OSC SILICON 977HZ 6-DFN LTC6991IDCB#TRMPBF-ND - IC OSC SILICON 977HZ 6-DFN LTC6991HS6#TRPBF-ND - IC OSC SILICON 977HZ TSOT23-6 LTC6991HDCB#TRPBF-ND - IC OSC SILICON 977HZ 6-DFN LTC6991HDCB#TRMPBF-ND - IC OSC SILICON 977HZ 6-DFN LTC6991CS6#TRPBF-ND - IC OSC SILICON 977HZ TSOT23-6 LTC6991CDCB#TRPBF-ND - IC OSC SILICON 977HZ 6-DFN 更多... |
LTC6991
11
6991fb
OPERATION
RST Pin and Polarity (POL) Bit
The RST pin controls the state of the LTC6991’s output
as seen on the OUT pin. The active/inactive voltage levels
depend on the POL bit setting.
Table 2. Output States
POL BIT
RST PIN
OUTPUT STATE
0
Oscillating
0
1
0 (reset)
1
0
1 (reset)
1
Oscillating
Each period of the LTC6991’s internal oscillator clocks the
output state latch (see Block Diagram). The reset pin (RST)
can reset or hold off the output latch. The active state of
the reset pin is determined by the polarity function (POL).
Similarly, the output latch is followed by a buffer that can
invert the output. The output polarity is also controlled
by the POL bit.
If POL = 0, the reset pin is active high and the output latch
is not inverted. Therefore, pulling the RST pin high will
reset the output latch and force the OUT pin low. Pulling
RST low will allow the output to oscillate, with the next
rising edge dependent on the internal oscillator.
If POL = 1, the reset pin is active low and the output latch
is inverted. Therefore, pulling the RST pin low will reset
the output latch and force the OUT pin high. Pulling RST
high will allow the output to oscillate, with the next falling
edge dependent on the internal oscillator.
Note that the master oscillator frequency and phase are not
affected by the RST pin; The LTC6991 continues to oscil-
late, internally, even when RST is active. While the reset
function can block an output pulse, its exact placement in
time can only be changed by power cycling the LTC6991.
tOUT
RST
OUT
tRST
tWIDTH
INTERNAL
OSCILLATOR
6991 F03
tOUT
RST
OUT
tRST
INTERNAL
OSCILLATOR
6991 F04
Figure 3. RST Timing Diagram (POL = 0)
Figure 4. RST Timing Diagram (POL = 1)
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| DC1562A-C | 功能描述:BOARD EVAL LTC6992-1 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:TimerBlox® 標準包裝:1 系列:- 主要目的:數字電位器 嵌入式:- 已用 IC / 零件:AD5258 主要屬性:- 次要屬性:- 已供物品:板 相關產品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP |
| DC1562A-D | 功能描述:BOARD EVAL LTC6992-2 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:TimerBlox® 標準包裝:1 系列:- 主要目的:數字電位器 嵌入式:- 已用 IC / 零件:AD5258 主要屬性:- 次要屬性:- 已供物品:板 相關產品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP |
| DC1562A-E | 功能描述:BOARD EVAL LTC6992-3 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:TimerBlox® 標準包裝:1 系列:- 主要目的:數字電位器 嵌入式:- 已用 IC / 零件:AD5258 主要屬性:- 次要屬性:- 已供物品:板 相關產品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP |
| DC1562A-F | 功能描述:BOARD EVAL LTC6992-4 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:TimerBlox® 標準包裝:1 系列:- 主要目的:電信，線路接口單元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要屬性:T1/J1/E1 LIU 次要屬性:- 已供物品:板，電源，線纜，CD 其它名稱:82EBV2081 |
| DC1562A-G | 功能描述:BOARD EVAL LTC6993-1 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:TimerBlox® 標準包裝:1 系列:- 主要目的:數字電位器 嵌入式:- 已用 IC / 零件:AD5258 主要屬性:- 次要屬性:- 已供物品:板 相關產品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP |
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