参数资料
型号: PIC14000T-20/SS
厂商: Microchip Technology
文件页数: 117/153页
文件大小: 0K
描述: IC MCU OTP 4KX14 A/D 28SSOP
标准包装: 2,100
系列: PIC® 14
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
连通性: I²C
外围设备: POR,温度传感器,WDT
输入/输出数: 20
程序存储器容量: 7KB(4K x 14)
程序存储器类型: OTP
RAM 容量: 192 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 6 V
数据转换器: 斜率 A/D
振荡器型: 内部
工作温度: 0°C ~ 70°C
封装/外壳: 28-SSOP(0.209",5.30mm 宽)
包装: 带卷 (TR)
PIC14000
DS40122B-page 66
Preliminary
1996 Microchip Technology Inc.
FIGURE 9-1:
LEVEL-SHIFT NETWORKS
5
A (nominal)
100 k
To A/D mux,
RA1/AN1
SUM
External
Capacitor
(Optional)
(nominal)
*These switches are a matched pair
programmable
LSOFF
(SLPCON<4>)
VDD
Input Protection
Diodes
*
RD5/AN5
RA1/AN1 only
*
LSOFF
(SLPCON<4>)
ADZERO
(ADCON<0>)
reference
comparators
VDD
9.3
Slope Reference Voltage Divider
The slope reference voltage divider circuit, consisting
of a buffer amplier and resistor divider, is connected to
the internal bandgap reference producing two other
voltage references called SREFHI and SREFLO (see
Figure 9-2). SREFHI is nominally the same as the
bandgap voltage, 1.2V, and SREFLO is nominally
0.13V. These reference voltages are available on two
of the analog multiplexer channels. The A/D module
and rmware can measure the SREFHI and SREFLO
voltages, and in conjunction with the KREF and KBG cal-
ibration data correct for the A/D's offset and slope
errors. See AN624 for further details.
9.4
Internal Temperature Sensor
The internal temperature sensor is connected to the
channel 7 input of the A/D converter. The sensor volt-
age is 1.05V nominal at 25
°C and its temperature coef-
cient is approximately 3.7mV/
°C. The sensor voltage
at 25
°C and the temperature coefcient values are
stored
in
the
calibration
space
EPROM
(See
Table 4-2). To enable the temperature sensor, the
TEMPOFF bit (SLPCON<1>) must be cleared.
相关PDF资料
PDF描述
MT5600SMI-X-L-34.R2 MODEM V.34 SERIAL DATA/FAX 3.3V
VE-22V-IY-S CONVERTER MOD DC/DC 5.8V 50W
VE-22T-IY-S CONVERTER MOD DC/DC 6.5V 50W
PIC14000T-20/SO IC MCU OTP 4KX14 A/D 28SOIC
MT100SEM-L.R1-SP DEVICE SERVER EMBEDDED 3.3V
相关代理商/技术参数
参数描述
PIC-1503 制造商:KODENSHI 制造商全称:KODENSHI KOREA CORP. 功能描述:Photo IC(photodiode with signal processing)
PIC152N-A 制造商:SELEC CONTROLS 功能描述:PROCESS INDICATOR,2 ALARMS,1/8DIN,4DIGIT,RELAY OUTPUT
PIC152N-B-2 制造商:SELEC CONTROLS 功能描述:PROCESS INDICATOR,2 ALARMS,RETRANSMISSION OUTPUT
PIC163F73-I/SP 制造商:Microchip Technology Inc 功能描述:8BIT RISC - Bulk
PIC1655A-278 制造商:GI 功能描述: