参数资料
型号: P83C180
厂商: NXP SEMICONDUCTORS
元件分类: 微控制器/微处理器
英文描述: Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口,同步监测和同步处理的监视器微控制器)
中文描述: 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, PLASTIC, SOT-270-1, SDIP-42
文件页数: 26/84页
文件大小: 420K
代理商: P83C180
1997 Dec 12
26
Philips Semiconductors
Product specification
Microcontrollers for monitors with DDC
interface, auto-sync detection and sync proc.
P83Cx80; P87C380
12 OSCILLATOR
The oscillator circuit of the P83C880 is a single-stage
inverting amplifier in a Pierce oscillator configuration. The
circuitry between XTAL1 and XTAL2 is basically an
inverter biased to the transfer point. Either a crystal or
ceramic resonator can be used as the feedback element to
complete the oscillator circuit. Both are operated in parallel
resonance.
XTAL1 is the high gain amplifier input, and XTAL2 is the
output (see Fig.10a). To drive the P83C880 externally,
XTAL1 is driven from an external source and XTAL2 left
open-circuit (see Fig.10b).
b.
External clock drive.
handbook, halfpage
MBE312
XTAL1
XTAL2
n.c.
external clock
(not TTL compatible)
Fig.10 Oscillator configurations.
a.
Crystal oscillator; C = 20 pF.
c.
External clock drive for P87C380.
handbook, halfpage
XTAL1
XTAL2
external clock
(not TTL compatible)
MLC930 - 1
handbook, halfpage
MBE311
XTAL1
XTAL2
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