STM86312_06 STMICROELECTRONICS [STMicroelectronics], STM86312_06 Datasheet
STM86312_06
Related parts for STM86312_06
STM86312_06 Summary of contents
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General features Many display modes (11 segments & 11 digits to 16 segments & 4 digits) Key scanning ( matrix) Dimming circuit (eight steps) High-voltage output (V – 35V max) DD LED ports (4 chs, 20mA max) General ...
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Contents Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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STM86312 1 Block diagram Figure 1. Block diagram Block diagram 3/24 ...
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Pin settings 2 Pin settings 2.1 Pin connection Figure 2. Pin connection 4/24 STM86312 ...
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STM86312 2.2 Pin description Table 1. Pin description Pin N° KEY1, KEY2, 10, 11, 12, 13 KEY3, KEY4 14, 38 15, 16, 17, SEG1/KS1 to 18, 19, 20 21, 22, 23, SEG7 ...
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Maximum rating 3 Maximum rating Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other ...
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STM86312 Maximum power consumption P dissipation + dynamic power consumption. Where segment current = 3 mA, grid current = 15 mA, and LED current = 20 mA, VFD driver dissipation = number of segments number of grids/(number ...
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Electrical characteristics 4 Electrical characteristics Table 5. Electrical characteristics (V to 70°C, unless otherwise noted. Typical values are at T Symbol V High Level Output Voltage LED1-LED4, I OH1 V Low Level Output Voltage LED1-LED4, I OL1 V Low Level ...
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STM86312 Table 7. Timing Characteristics (V noted. Typical values are at T Symbol PW Clock Pulse Width CLK PW Strobe Pulse Width STB t Data Setup Time SETUP t Data Hold Time HOLD t Clock-Strobe Time CLK-STB t Wait Time ...
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Display RAM address and display mode 5 Display RAM address and display mode The display RAM stores the data transmitted from an external device to the STM86312 through the serial interface; addresses are as follows, in 8-bits unit: RAM stores ...
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STM86312 The data of each key are stored as illustrated below, and are read by the appropriate read command, starting from the least significant bit KEY1 Seg1/KS1 Seg3/KS3 Seg5/KS5 b0 Display RAM address and display mode KEY4 KEY1 Seg2/KS2 Seg4KS4 ...
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LED port 6 LED port Data are written to the LED port by a write command, starting from the least significant bit of the port. When a bit of this port is 0, the corresponding LED lights; when the bit ...
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STM86312 7 SW data The SW data are read by the appropriate read command, starting from the least significant bit. Bits 5 through 8 of the SW data are 0. Figure 5. SW data MSB ...
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Commands 8 Commands A command sets the display mode and status of the VFD driver. The first 1 byte input to the STM86312 through the D regarded as a command. If STB is set high while commands/data are transmitted, serial ...
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STM86312 8.2 Data setting command This command sets data write and data read modes. Figure 7. Data setting command MSB power application, the normal operation mode and address increment mode are set. Do not use STM86312 in ...
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Commands 8.4 Display control command Figure 9. Display control command MSB power application, the 1/16-pulse width is set and the display is turned off. Note: On power application, key scanning is stopped. Figure 10. Key scanning and ...
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STM86312 9 Serial communication format Figure 11. Reception (command/data write) Figure 12. Transmission (data read) Because the D OUT up resistor to this pin (1 kΩ kΩ). Note: *: When data are read, a wait time t eighth ...
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Serial communication format Figure 13. Switching characteristics waveform 18/24 STM86312 ...
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STM86312 10 Application Figure 14. Updating display memory by incrementing address Command 1: sets display mode Command 2: sets data Command 3: sets address Data transfers display data (22 bytes max.) Command 4: controls display Figure 15. ...
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Application Figure 16. Application circuit Ω Note 47k for oscillator resistor OSC Ω 1 R1=1~10 k for external pull-high resistor Ω 2 R2~R5 = 750 ~1.2 k Ω 3 R6~R9 = 10k for external pull-low resistor 4 D1~D6 ...
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STM86312 11 Mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the ...
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Mechanical data DIM 22/24 PQFP44 MECHANICAL DATA mm. MIN. TYP MAX. 2.45 0.25 1.80 2.00 2.20 0.29 0.45 0.11 0.23 13.2 10.00 8.00 13.2 10.00 ...
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STM86312 12 Revision history Table 8. Revision history Date 27-May-2004 27-Mar-2006 Revision 1 First Release 2 New Temp, few changes Revision history Changes 23/24 ...
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Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any ...