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ICM7245AIM44Z Datasheet(PDF) 2 Page - Intersil Corporation |
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ICM7245AIM44Z Datasheet(HTML) 2 Page - Intersil Corporation |
2 / 13 page ICM7245 2 FN8587.0 October 29, 2013 Pin Configuration ICM7245 (16-SEGMENT CHARACTER) (44 LD MQFP) TOP VIEW D2 D1 D0 SEG a2 SEG a1 SEG d1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 D3 D4 D5 CS NC 28 27 26 25 24 23 22 21 20 19 18 NC CHAR1 OSC/OFF A2/DISP FULL A1/CLR A0/SEN 39 38 37 36 35 34 33 32 31 30 29 44 43 42 41 40 SEG d2 DP SEG h SEG j MODE Pin Descriptions SIGNAL PIN FUNCTION D0 - D5 4 thru 9 6-Bit ASCll Data input pins (active high). CS 10 Chip Select from µP address decoder, etc. WR 13 WRite pulse input pin (active low). For an active high write pulse, CS can be used. MODE 29 Selects data entry MODE. High selects Sequential Access (SA) mode where first entry is displayed in “leftmost” character and subsequent entries appear to the “right”. Low selects Random Access (RA) mode where data is displayed on the character addressed via A0 thru A2 Address pins. A0/SEN 28 In RA mode it is the LSB of the character Address. In SA mode it is used for cascading devices for displays of more than 8 characters (active high enables device controller). A1/CLR 27 In RA mode this is the second bit of the address. In SA mode, a low input will CLeaR the Serial Address Counter, the Data Memory and the display. A2/DISP FULL 26 In RA mode this is the MSB of the Address. In SA mode, the output goes high after 8 entries, indicating DISPlay FULL. OSC/OFF 25 OSCillator input pin. Adding capacitance to VDD will lower the internal oscillator frequency. An external oscillator can be applied to this pin. A low at this input sets the device into a (shutdown) mode, shutting OFF the display and oscillator but retaining data stored in memory. SEG d1, SEG a1, SEG a2; SEG j, SEG h, DP, SEG d2, SEG f, SEG i, SEG b, SEG g2, SEG I; SEG m, SEG e, SEG g1, SEG k, SEG c 1 thru 3, 30 thru 38 40 thru 44 SEGment driver outputs. CHAR8 thru CHAR5, CHAR4 thru CHAR2, CHAR1 14 thru 17, 19 thru 21, 24 CHARacter driver outputs. VSS 18 Supply Ground. VDD 39 Positive Power Supply +3.0V to +3.6V. NC 11, 12, 22, 23 No connection. |
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