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| 型号： | TC7135CBU713 |
| 厂商： | Microchip Technology |
| 文件页数： | 10/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 4 1/2DGT 64-MQFP |
| 标准包装： | 250 |
| 显示器类型： | LED |
| 配置： | 7 段显示 |
| 接口： | BCD |
| 数字或字符： | A/D，4.5 位数字 |
| 电流 - 电源： | 1mA |
| 电源电压： | 4 V ~ 6 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-BQFP |
| 供应商设备封装： | 64-PQFP（14x14） |
| 包装： | 带卷 (TR) |
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TC7135
5.2
STROBE Output
Integrator
Output
Signal
During the measurement cycle, the STROBE control
line is pulsed low five times. The five low pulses occur
System Integrate
Zero 10,000
10,001 Counts
Counts (Fixed)
Reference
Integrate
20,001
Counts (Max)
in the center of the digit drive signals (D 1 , D 2 , D 3 , D 5 )
(see Figure 5-3 ).
Busy
Overrange when
Applicable
Underrange when
Applicable
Full Measurement Cycle
40,002 Counts
Expanded Scale Below
D 5 (MSD) goes high for 201 counts when the
measurement cycles end. In the center of the D 5 pulse,
101 clock pulses after the end of the measurement
cycle, the first STROBE occurs for one half clock pulse.
After the D 5 digit strobe, D 4 goes high for 200 clock
pulses. The STROBE then goes low 100 clock pulses
after D 4 goes high. This continues through the D 1 digit
drive pulse.
Digit Scan
D5
D4
D3
D2
The digit drive signals will continue to permit display
scanning. STROBE pulses are not repeated until a new
measurement is completed. The digit drive signals will
not continue if the previous signal resulted in an
STROBE
100
Counts
D1
* First D5 of System Zero and
Reference Integrate One Count
Longer
overrange condition.
The active-low STROBE pulses aid BCD data transfer
to UARTs, processors and external latches. For more
Digit Scan
* D5
Auto-Zero
Signal
Integrate
Reference
Integrate
information, please refer to Application Note 784
(DS00784).
for Overrange
D4
*
TC7135
D3
Outputs
Busy
End of Conversion
D2
D1
B1 B8
*
D5
(MSD)
Data
D4
Data
D3
Data
D2
Data
D1
(LSD)
Data
D5
Data
FIGURE 5-2:
Outputs.
Timing Diagrams For
STROBE
200
Counts
Note Absence
of STROBE
5.1
RUN/HOLD Input
D5
201
Counts
200
Counts
When left open, this pin assumes a logic ‘ 1 ’ level. With
a RUN/HOLD = 1 , the TC7135 performs conversions
continuously, with a new measurement cycle beginning
every 40,002 clock pulses.
When RUN/HOLD changes to a logic ‘ 0 ’, the measure-
ment cycle in progress will be completed, with the data
held and displayed as long as the logic ‘ 0 ’ condition
exists.
D4
D3
D2
D1
200
Counts
200
Counts
200
Counts
200
Counts
A positive pulse (>300 nsec) at RUN/HOLD initiates a
new measurement cycle. The measurement cycle in
* Delay between Busy going Low and First STROBE pulse is
dependent on Analog Input.
progress when RUN/HOLD initially assumed the logic
FIGURE 5-3:
Strobe Signal Low Five
‘ 0 ’ state must be completed before the positive pulse
can be recognized as a single conversion run
command.
The new measurement cycle begins with a 10,001
count auto-zero phase. At the end of this phase, the
busy signal goes high.
DS21460D-page 10
Times Per Conversion.
? 2007 Microchip Technology Inc.
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| TC7135CKW | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-1/2 Digit A/D Converter |
| TC7135CLI | 功能描述:LED显示驱动器 4-1/2 Digit A/D BCD RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| TC7135CLI713 | 功能描述:LED显示驱动器 4-1/2 Digit A/D BCD RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| TC7135CPI | 功能描述:LED显示驱动器 4-1/2 Digit A/D BCD RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| TC7135CPL | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-1/2 Digit A/D Converter |
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