- 您现在的位置：买卖IC网 > PDF目录367725 > P8xCL580HFT (NXP Semiconductors N.V.) Low voltage 8-bit microcontrollers with UART, I2C-bus and ADC PDF资料下载
参数资料
| 型号： | P8xCL580HFT |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | Low voltage 8-bit microcontrollers with UART, I2C-bus and ADC |
| 中文描述： | 低电压8 - UART的，位微控制器的I2C总线和ADC |
| 文件页数： | 51/80页 |
| 文件大小： | 366K |
| 代理商： | P8XCL580HFT |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页当前第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页
1997 Mar 14
51
Philips Semiconductors
Product specification
Low voltage 8-bit microcontrollers with
UART, I
2
C-bus and ADC
P80CL580; P83CL580
18 OSCILLATOR CIRCUITRY
The on-chip oscillator circuitry of the P8xCL580 is a
single-stage inverting amplifier biased by an internal
feedback resistor. The oscillator circuit is shown in Fig.30.
For operation as a standard quartz oscillator, no external
components are needed, except for the 32 kHz option.
When using external capacitors, ceramic resonators, coils
and RC networks to drive the oscillator, five different
configurations are supported (see Table 48 and Fig.29).
In the Power-down mode the oscillator is stopped and
XTAL1 is pulled HIGH. The oscillator invertor is switched
off to ensure no current will flow regardless of the voltage
at XTAL1, for configurations (a), (b), (c), (d), (e) and (g) of
Fig.29.
To drive the device with an external clock source, apply the
external clock signal to XTAL1, and leave XTAL2 to float,
as shown in Fig.29(f). There are no requirements on the
duty cycle of the external clock, since the input to the
internal clocking circuitry is buffered by a flip-flop.
Various oscillator options are provided for optimum
on-chip oscillator performance; these are specified in
Table 48 and shown in Fig.29. The required option should
be stated when ordering.
Table 48
Oscillator options
OPTION
APPLICATION
Oscillator 1
For 32 kHz clock applications with external trimmer for frequency adjustment. A 4.7 M
bias resistor
is needed for use in parallel with the crystal; see Fig.29(c).
Low-power, low-frequency operations using LC components; see Fig.29(e).
Medium frequency range applications.
High frequency range applications.
RC oscillator configuration; see Figs 29(g) and 31.
Oscillator 2
Oscillator 3
Oscillator 4
RC oscillator
handbook, full pagewidth
MLA577
VDD
XTAL1
XTAL2
(d)
XTAL1
XTAL2
(e)
XTAL1
XTAL2
(f)
XTAL1
XTAL2
(g)
n.c.
n.c.
XTAL1
XTAL2
(b)
XTAL1
XTAL2
(c)
XTAL1
XTAL2
(a)
STANDARD
QUARTZ
OSCILLATOR
QUARTZ OSCILLATOR
WITH EXTERNAL
CAPACITORS
32 kHz
OSCILLATOR
CERAMIC
RESONATOR
LC - OSCILLATOR
EXTERNAL CLOCK
RC - OSCILLATOR
Fig.29 Oscillator configurations.
相关PDF资料 |
PDF描述 |
|---|---|
| P8216 | Four-Bit Parallel Bidirectional Bus Driver |
| P8226 | Four-Bit Parallel Bidirectional Bus Driver |
| P82284-6 | CPU System Clock Generator |
| D82284-6 | CPU System Clock Generator |
| D82284-6B | CPU System Clock Generator |
相关代理商/技术参数 |
参数描述 |
|---|---|
| P8Z77 DELUXE | 制造商:Asus 功能描述:P8Z77-V Deluxe ATX Motherboard |
| P8Z77 M PRO | 制造商:Asus 功能描述:P8Z77-M Pro MicroATX Motherboard |
| P8Z77 V | 制造商:Asus 功能描述:P8Z77-V ATX Motherboard |
| P8Z77 V PRO | 制造商:Asus 功能描述:P8Z77-V Pro ATX Motherboard |
| P8Z77-V | 制造商:ASUSTeK Computer Inc 功能描述:P8Z77-V ATX Motherboard |
发布紧急采购，3分钟左右您将得到回复。