參數(shù)資料
型號(hào)： PIC16C432-E/P
廠商： Microchip Technology
文件頁(yè)數(shù)： 43/70頁(yè)
文件大?。?/td> 0K
描述： IC MCU CMOS 8-BIT 20MHZ 2K 20DIP
標(biāo)準(zhǔn)包裝： 25
系列： PIC® 16C
核心處理器： PIC
芯體尺寸： 8-位
速度： 20MHz
連通性： LIN（本地互連網(wǎng)絡(luò)）
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，POR，WDT
輸入/輸出數(shù)： 12
程序存儲(chǔ)器容量： 3.5KB（2K x 14）
程序存儲(chǔ)器類型： OTP
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振蕩器型： 外部
工作溫度： -40°C ~ 125°C
封裝/外殼： 20-DIP（0.300"，7.62mm）
包裝： 管件
配用： AC164029-ND - MODULE SKT PROMATEII 20DIP/SSOP
DVA16XP201-ND - ADAPTER DEVICE FOR MPLAB-ICE
PIC16C432
DS41140B-page 46
Preliminary
2002 Microchip Technology Inc.
9.2.3
EXTERNAL CRYSTAL OSCILLATOR
CIRCUIT
Either a prepackaged oscillator can be used, or a sim-
ple oscillator circuit with TTL gates can be built. Pre-
packaged oscillators provide a wide operating range
and better stability. A well designed crystal oscillator
will provide good performance with TTL gates. Two
types of crystal oscillator circuits can be used: one with
series resonance, or one with parallel resonance.
Figure 9-3 shows implementation of a parallel resonant
oscillator circuit. The circuit is designed to use the
fundamental frequency of the crystal. The 74AS04
inverter performs the 180
° phase shift that a parallel
oscillator requires. The 4.7 k
resistor provides the
negative
feedback
for
stability.
The
10 k
potentiometers bias the 74AS04 in the linear region.
This could be used for external oscillator designs.
FIGURE 9-3:
EXTERNAL PARALLEL
RESONANT CRYSTAL
OSCILLATOR CIRCUIT
Figure 9-4 shows a series resonant oscillator circuit.
This circuit is also designed to use the fundamental
frequency of the crystal. The inverter performs a 180
°
phase shift in a series resonant oscillator circuit. The
330 k
resistors provide the negative feedback to bias
the inverters in their linear region.
FIGURE 9-4:
EXTERNAL SERIES
RESONANT CRYSTAL
OSCILLATOR CIRCUIT
9.2.4
RC OSCILLATOR
For timing insensitive applications, the “RC” device
option offers additional cost savings. The RC oscillator
frequency is a function of the supply voltage, the
resistor (REXT) and capacitor (CEXT) values, and the
operating temperature. In addition to this, the oscillator
frequency will vary from unit to unit due to normal
process
parameter
variation.
Furthermore,
the
difference in lead frame capacitance between package
types
will
also
affect
the
oscillation
frequency,
especially for low CEXT values. The user also needs to
take into account variation due to tolerance of external
R and C components used. Figure 9-5 shows how the
R/C combination is connected to the PIC16C432. For
REXT values below 2.2 k
, the oscillator operation may
become unstable, or stop completely. For very high
REXT values (i.e., 1 M
), the oscillator becomes
sensitive to noise, humidity and leakage. Thus, it is
recommended to keep REXT between 3 k
and 100 k.
Although the oscillator will operate with no external
capacitor (CEXT = 0 pF), we recommend using values
above 20 pF for noise and stability reasons. With no or
small external capacitance, the oscillation frequency
can vary dramatically due to changes in external
capacitances, such as PCB trace capacitance, or
package lead frame capacitance.
The variation is larger for larger R (since leakage cur-
rent variation will affect RC frequency more for large R)
and for smaller C (since variation of input capacitance
will affect RC frequency more).
See Section 2.0 for variation of oscillator frequency due
to VDD for given REXT/CEXT values, as well as
frequency variation due to operating temperature for
given R, C, and VDD values.
The oscillator frequency, divided by 4, is available on
the OSC2/CLKOUT pin and can be used for test pur-
poses, or to synchronize other logic (see Figure 4-2 for
waveform).
FIGURE 9-5:
RC OSCILLATOR MODE
20 pF
+5V
20 pF
10k
4.7k
10k
74AS04
XTAL
10k
74AS04
PIC16C432
CLKIN
To Other
Devices
330
74AS04
PIC16C432
CLKIN
To other
Devices
XTAL
330
74AS04
0.1 mF
OSC2/CLKOUT
CEXT
REXT
VDD
PIC16C432
OSC1
FOSC/4
Internal Clock
VDD
相關(guān)PDF資料
PDF描述
PIC18LF452T-I/L IC MCU FLASH 16KX16 A/D 44PLCC
PIC18LF442T-I/L IC MCU FLASH 8KX16 A/D 44PLCC
PIC16HV540-04I/P IC MCU OTP 512X12 18DIP
PIC16LC781T-I/SO IC MCU OTP 1KX14 A/D D/A 20SOIC
PIC16LC782T-I/SS IC MCU OTP 2KX14 A/D D/A 20SSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC16C432-I/P 功能描述:8位微控制器 -MCU 20MHz 2K EPROM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16C432-I/SS 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 12 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16C432T-E/SS 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 12 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16C432T-I/SS 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 12 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16C433/JW 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 6 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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

*
*
*