Electronic Components Datasheet Search |
|
AN874 Datasheet(PDF) 2 Page - Maxim Integrated Products |
|
AN874 Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 6 page LED Digit 6* SEG dp SEG g SEG f SEG e SEG d SEG c CC6 SEG b SEG a LED Digit 7* SEG dp SEG g SEG f SEG e SEG d SEG c SEG b CC7 SEG a *These digits are not available for the MAX6950. The MAX6950 and MAX6951 were intended to drive single-digit displays, and this allows the segments for each digit to be routed to the correct driver pin. Many dual-digit displays pin out the two digits separately, treating the digits as two singles in one package. These can be driven directly by the MAX6950 and MAX6951. Other dual-digit displays internally pair the segment anodes for the two digits (Figure 1) and these displays present issues. The problem can be understood by checking the SEG dp entries in Table 1 for Digit 0 and Digit 1. SEG dp is connected to a different pin for each digit. However, a multiplex dual-digit display commons these connections internally (Figure 1), effectively shorting Pin 5 and Pin 6 of the driver. Figure 1. Internal connections for a multiplex dual-digit display Two simple solutions are presented here. The first solution simply sacrifices the segment drive that share a cathode drive for each dual-digit. This is SEG dp for Digit 0 and Digit 1 discussed earlier. By examining Table 1, it can be seen that the other sacrificed segments are SEG f for Digit 2 and Digit 3, SEG d for Digit 4 and Digit 5, and SEG b for Digit 6 and Digit 7. However, it's usually the DP segments that applications can sacrifice, not segments within the seven-segment digit. If the DPs are not required, then the connections shown in Table 2 can be used. This is a rework of the standard connections shown in Table 1, with the segments moved so that all segments apart from the DP segments are available. The DP segment connections on the displays are simply left unused. The no-decode operation should not be selected when this (or any other nonstandard) pin mapping is used. The MAX6950 or MAX6951's internal hexadecimal fonts display correctly in decode mode only when the standard display connections are being used. |
Similar Part No. - AN874 |
|
Similar Description - AN874 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |