参数资料
型号: TC14433ELI
厂商: Microchip Technology
文件页数: 7/24页
文件大小: 0K
描述: IC ADC 3 1/2 DIGIT 28PLCC
标准包装: 39
显示器类型: LED
配置: 7 段显示
接口: BCD
数字或字符: A/D,3.5 位数字
电流 - 电源: 1.8mA
电源电压: 4.5 V ~ 8 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-LCC(J 形引线)
供应商设备封装: 28-PLCC
包装: 管件
TC14433/A
TABLE 3-1:
Pin No.
PIN FUNCTION TABLE (CONTINUED)
Pin No.
24-Pin PDIP,
SOIC
16
28-Pin
PLCC
19
Symbol
DS 4
Description
Digit select pin. The digit select output goes high when the respective digit is
selected. The MSD (1/2 digit turns on immediately after an EOC pulse).
17
18
20
21
DS 3
DS 2
The remaining digits turn on in sequence from MSD to LSD.
To ensure that the BCD data has settled, an inter digit blanking time of two
clock periods is included.
19
23
DS 1
Clock frequency divided by 80 equals multiplex rate. For example, a system
clock of 60 kHz gives a multiplex rate of 0.8 kHz.
20
21
24
25
Q 0
Q 1
See Figure 5-4 for digit select timing diagram.
BCD data output pin. Multiplexed BCD outputs contain three full digits of
information during digit select DS 2 , DS 3 , DS 4 .
22
26
Q 2
During DS 1 , the 1/2 digit, overrange, underrange and polarity information is
available.
23
24
27
28
1
8
15
22
Q 3
V DD
NC
NC
NC
NC
Refer to the Truth Table 5-1 .
Positive power supply. This is the most positive power supply pin.
Not Used.
Not Used.
Not Used.
Not Used.
? 2008 Microchip Technology Inc.
DS21394D-page 7
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