參數(shù)資料
型號(hào)： PCA5007H
廠商： NXP Semiconductors N.V.
英文描述： Pager baseband controller
中文描述： 傳呼機(jī)基帶控制器
文件頁(yè)數(shù)： 33/112頁(yè)
文件大小： 604K
代理商： PCA5007H
1998 Oct 07
33
Philips Semiconductors
Product specification
Pager baseband controller
PCA5007
6.12.2
6 MH
Z
O
SCILLATOR
C
ONTROL
R
EGISTER
(OS6CON)
The OS6CON special function register is used to control the operation of the on-chip 6 MHz oscillator. The 6 MHz
oscillator can be controlled as follows:
It can be enabled or disabled. Disabling this oscillator when the DC/DC converter is in standby mode and no port I/O
nor I
2
C-bus activity is required saves current.
The frequency of the oscillator can be adjusted by setting the SFx bits accordingly
The actual frequency of the oscillator can be measured by writing the MFR bit to logic 1.
Table 24
6 MHz Oscillator Control Register (OS6CON, SFR address D3H)
Table 25
Description of the OS6CON bits
6.12.3
6 MH
Z
O
SCILLATOR
M
EASURED
F
REQUENCY
R
EGISTER
(OS6M0)
The actual frequency of the 6 MHz on-chip oscillator can be calculated from the value in the OS6M0 special function
register, after a Measure Frequency operation (MFR).
Table 26
6 MHz Oscillator Measured Frequency Register (OS6M0, SFR address D4H)
The value stored in this SFR is the counted number of 6 MHz cycles during one 76.8 kHz period. The frequency of the
6 MHz oscillator is therefore f = MF
×
76800 Hz with a resolution of 76800 Hz.
7
6
5
4
3
2
1
0
ENB
SF4
SF3
SF2
SF1
SF0
MFR
BIT
SYMBOL
FUNCTION
OS6CON.7
ENB
Enable oscillator
. If ENB = 1 then the function is enabled. The enable bit is only
cleared when the processor writes the bit to logic 0, or if the DC/DC converter is put into
‘OFF’ state and a reset is generated during the following power-up sequence.
unused
Set frequency
. This 5-bit value adjusts the current of the ring oscillator and thus the
frequency. Writing a small value decreases the frequency. The nominal frequency of
6 MHz is assigned to code (SF4, SF3, SF2, SF1 SF0) = 00000. The resolution of the
frequency adjustment is 200 kHz per step, the range is approximately 3 to 9 MHz.
In order to start with the nominal frequency the MSB bit is inverted in this SFR.
OS6CON.6
OS6CON.5
OS6CON.4
OS6CON.3
OS6CON.2
OS6CON.1
OS6CON.0
SF4
SF3
SF2
SF1
SF0
MFR
Measure frequency
. If a positive pulse is issued on this SFR-bit a frequency
measurement cycle is executed. The duration of this cycle is one period of 76.8 kHz.
The count of 6 MHz periods during the measurement cycle is reported back in OS6M0.
The bit must be reset by software.
7
6
5
4
3
2
1
0
MF7
MF6
MF5
MF4
MF3
MF2
MF1
MF0
相關(guān)PDF資料
PDF描述
PCA5010 Pager baseband controller
PCA5010H Pager baseband controller
PCA82C200 STAND-ALONE CAN-CONTROLLER
PCA82C200P STAND-ALONE CAN-CONTROLLER
PCA82C200T STAND-ALONE CAN-CONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA5007H/XXX 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8-Bit Microcontroller
PCA5010 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Pager baseband controller
PCA5010H 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Pager baseband controller
PCA5010H/XXX 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:MICROCONTROLLER|8-BIT|8051 CPU|CMOS|QFP|48PIN|PLASTIC
PCA503HL320 制造商:ADAM-TECH 制造商全稱(chēng):Adam Technologies, Inc. 功能描述:ZIF FLEX CIRCUIT CONNECTOR
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*