Description
VK1621S-1 32×4 LCD DRIVER VK1621 is a RAM Mapping 32x4 LCD Driver，It can support LCD screens with a maximum of 128 pattern(32SEGx4COM), it is also supports LCD screens of 2COM or 3COM.Only 3 or 4 lines are required to communication interface with the VK1621,it is used to configure display parameters and transfer display data, and can also enter the standby mode through Power down command. February 2020 2/34 www.szvinka.com VK1621S-1 32×4 LCD DRIVER 2 COB PAD description and Coordinates 2.1 COBPAD Assignment Chip size：1630×1755 um2 PAD size：90×90 um note：VLCD<VDD Substrate：connected to VDD PAD spacing：112 um February 2020 3/34 www.szvinka.com VK1621S-1 32×4 LCD DRIVER 2.2 COB PAD Coordinates coordinate origin is in the center of the chip，unit：μm Pad No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Name /CS /RD /WR DATA GND OSCO OSCI VLCD VDD /IRQ BZ /BZ COM0 COM1 COM2 COM3 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 X 411.5 298.5 185.5 63 -52 -167 -282 -397 -512 -627. -664.5 -664.5 -664.5 -664.5 -664.5 -664.5 -664.5 -664.5 -664.5 -664.5 -664.5 -664.5 -627 -512.5 Y 732.9 732.9 732.9 732.9 732.9 732.9 732.9 732.9 732.9 732.9 619.8 494 382 270 158 46 -66 -178 -290 -402 -514 -626 -738 -738 Pad No 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Name SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 X -397.5 -282.5 -167.5 -52.5 62.5 177.5 292.5 407.5 522.5 637.5 675.5 675.5 675.5 675.5 675.5 675.5 675.5 675.5 675.5 675.5 675.5 675.5 637.5 524.5 Y -738 -738 -738 -738 -738 -738 -738 -738 -738 -738 -626 -513 -400 -287 -174 -61 52 165 278 391 504 617 732.9 732.9 February 2020 4/34 www.szvinka.com 3 Pinouts and pin description 3.1 VK1621B SSOP48 Pin Assignment VK1621S-1 32×4 LCD DRIVER SEG7 1 SEG6 2 SEG5 3 SEG4 4 SEG3 5 SEG2 6 TOP VIEW SEG1 7 SEG0 8 /CS 9 SSOP48 /RD 10 /WR 11 DATA 12 VSS 13 OSCO 14 OSCI 15 VLCD 16 VDD 17 /IRQ 18 BZ 19 /BZ 20 COM0 21 COM1 22 COM2 23 COM3 24 48 SEG8 47 SEG9 46 SEG10 45 SEG11 44 SEG12 43 SEG13 42 SEG14 41 SEG15 40 SEG16 39 SEG17 38 SEG18 37 SEG19 36 SEG20 35 SEG21 34 SEG22 33 SEG23 32 SEG24 31 SEG25 30 SEG26 29 SEG27 28 SEG28 27 SEG29 26 SEG30 25 SEG31 February 2020 5/34 www.szvinka.com 3.2 VK1621B SSOP48 Pin Description VK1621S-1 32×4 LCD DRIVER No.
Key Features
- Operating voltage:2.4-5.2V
- Built-in 256kHz RC oscillator（default）
- External 32.768kHz crystal（OSCO,OSCI）
- External 256kHz requency source（OSCI）
- Selection of 1/2 or 1/3 bias
- Selection of 1/2 or 1/3 or 1/4 duty
- Built-in 32×4 bit display RAM
- Selection of buzzer frequencies 2kHz、4kHz
- STANDBY mode（by Cmd LCD OFF,SYS DIS）
- 8 kinds of time base/WDT clock sources
