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參數(shù)資料
| 型號： | L6470PD |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 7 A, PDSO36 |
| 封裝： | ROHS COMPLIANT, SSOP-36 |
| 文件頁數(shù)： | 17/61頁 |
| 文件大?。?/td> | 703K |
| 代理商： | L6470PD |
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Functional description
L6470
24/61
Doc ID 16737 Rev 1
6.8
Internal oscillator and oscillator driver
Control logic clock can be supplied by the internal 16 MHz oscillator, an external oscillator
(crystal or ceramic resonator) or a direct clock signal.
These working modes can be selected by EXT_CLK and OSC_SEL parameters of CONFIG
register (see Table 15, paragraph Section 9.1.21 on page 43).
At power-up the device starts using the internal oscillator and provides a 2 MHz clock signal
on the OSCOUT pin.
Attention:
In any case, before changing clock source configuration, a
hardware reset is mandatory.
6.8.1
Internal oscillator
In this mode the internal oscillator is activated and OSCIN is unused. If OSCOUT clock
source is enabled, OSCOUT pin provides a 2, 4, 8 or 16 MHz clock signal (according to
OSC_SEL value); otherwise it is unused (see Figure 9).
6.8.2
External clock source
Two types of external clock source can be selected: crystal/ceramic resonator or direct clock
source. Four programmable clock frequencies are available for each external clock source:
8, 16, 24 and 32 MHz.
When an external crystal/resonator is selected, OSCIN and OSCOUT pins are used to drive
placed as close as possible to the pins (see Table 3).
If a direct clock source is used, it must be connected to OSCIN pin and OSCOUT pin
supplies the inverted OSCIN signal (see Figure 9).
Table 7.
CL values according to external oscillator frequency
Crystal/resonator freq. (1)
1.
First harmonic resonance frequency
CL
(2)
2.
Lower ESR value allows driving greater load capacitors
8MHz
25pF (ESRmax = 80Ω)
16MHz
18pF (ESRmax = 50Ω)
24MHz
15pF (ESRmax = 40Ω)
32MHz
10pF (ESRmax = 40Ω)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6470PDTR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 dSPIN 7.0A 8 - 45 V DMOS Motor Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L64710GC-30 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Encoder/Decoder |
| L64710GC-40 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Encoder/Decoder |
| L64710GM-25 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Encoder/Decoder |
| L64710GM-30 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Encoder/Decoder |
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