參數(shù)資料
型號(hào)： PIC16C62B
廠商： Microchip Technology Inc.
英文描述： 28-Pin 8-Bit CMOS Microcontrollers(28引腳，8位CMOS微控制器)
中文描述： 28引腳8位CMOS微控制器（28引腳，8位的CMOS微控制器）
文件頁數(shù)： 53/120頁
文件大?。?/td> 2122K
代理商： PIC16C62B
PIC16C62B/72A
1999 Microchip Technology Inc.
Preliminary
DS35008B-page 53
9.2
Selecting the A/D Conversion Clock
The A/D conversion time per bit is defined as T
AD
. The
A/D conversion requires 9.5T
AD
per 8-bit conversion.
The source of the A/D conversion clock is software
selectable. The four possible options for T
AD
are:
2T
OSC
8T
OSC
32T
OSC
Internal RC oscillator
For correct A/D conversions, the A/D conversion clock
(T
AD
) must be selected to ensure a minimum T
AD
time
of 1.6
μ
s.
The A/D module can operate during sleep mode, but
the RC oscillator must be selected as the A/D clock
source prior to the
SLEEP
instruction.
Table 9-1 shows the resultant T
AD
times derived from
the device operating frequencies and the A/D clock
source selected.
9.3
Configuring Analog Port Pins
The ADCON1 and TRISA registers control the opera-
tion of the A/D port pins. The port pins that are desired
as analog inputs must have their corresponding TRIS
bits set (input). If the TRIS bit is cleared (output), the
digital output level (V
OH
or V
OL
) will be converted.
The A/D operation is independent of the state of the
CHS2:CHS0 bits and the TRIS bits.
TABLE 9-1
T
AD
vs. DEVICE OPERATING FREQUENCIES
Note 1:
When reading the port register, all pins
configured as analog input channels will
read as cleared (a low level). Pins config-
ured as digital inputs, will convert an ana-
log input. Analog levels on a digitally
configured input will not affect the conver-
sion accuracy.
Note 2:
Analog levels on any pin that is defined as
a digital input (including the AN4:AN0
pins) may cause the input buffer to con-
sume current that is out of the devices
specification.
AD Clock Source (T
AD
)
Device Frequency
Operation
2T
OSC
8T
OSC
32T
OSC
RC
(5)
Legend: Shaded cells are outside of recommended range.
Note1:
The RC source has a typical T
AD
time of 4
μ
s.
2:
These values violate the minimum required T
AD
time.
3:
For faster conversion times, the selection of another clock source is recommended.
4:
When device frequency is greater than 1 MHz, the RC A/D conversion clock source is recommended for
sleep operation only.
5:
For extended voltage devices (LC), please refer to Electrical Specifications section.
ADCS1:ADCS0
20 MHz
100 ns
(2)
400 ns
(2)
1.6
μ
s
2 - 6
μ
s
(1,4)
5 MHz
400 ns
(2)
1.6
μ
s
6.4
μ
s
2 - 6
μ
s
(1,4)
1.25 MHz
1.6
μ
s
6.4
μ
s
25.6
μ
s
(3)
2 - 6
μ
s
(1,4)
333.33 kHz
6
μ
s
24
μ
s
(3)
96
μ
s
(3)
2 - 6
μ
s
(1)
00
01
10
11
相關(guān)PDF資料
PDF描述
PIC16C63A 8-Bit CMOS Microcontrollers with A/D Converter(8位、帶A/D轉(zhuǎn)換器的CMOS微控制器)
PIC16C73B 8-Bit CMOS Microcontrollers with A/D Converter(帶A/D轉(zhuǎn)換器的8位CMOS微控制器)
PIC16C63 8-Bit CMOS Microcontrollers
PIC16C64 8-Bit CMOS Microcontrollers
PIC16C65 8-Bit CMOS Microcontrollers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC16C62B/JW 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 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
PIC16C62B-04/SO 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 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
PIC16C62B-04/SP 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 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
PIC16C62B-04/SP 制造商:Microchip Technology Inc 功能描述:IC 8BIT CMOS MCU 16C62 SDIL28
PIC16C62B-04/SS 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 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，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。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。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

我的聯(lián)系方式

*
*
*