Advance Information

93-Segment with Common
3-Level Bistable Display Driver With Controller

SSD1621 is a CMOS bistable display driver with controller. It has 92-segment plus 1 background signal and 1 common signal with 3-voltage levels output. 

SSD1621 embeds DC-DC controller, bias divider and VCI regulator to minimize number of external components. SSD1621 is designed for SPI interface with hardware address setting pin, allowing two SSD1621 connected to same SPI bus, increasing the available number of segments.

• Design for Segment / Icon type display

• Power supply: 

  • V_DD : 2.4 to 3.5V        Logic operation

  • V_DDIO: 2.4 to V_DD        MCU interface

  • V₀: 13 to 32V             High voltage panel driving

  • V_CI: 2.4 to 3.5V          Charge pump power supply

  • V_BAT: 2.8 to 4.2V        Battery supply

• VBAT can be supplied from Li - battery

• Optional VCI regulator from VBAT supply

• V0 can be supplied from internal DC/DC or external power supply

• V1 can be supplied from internal voltage divider or external power supply

• Output channel

  • 92 Segments (SEG[92:1]) for normal segment/icon driving

  • 1 Background Segment (SEG0) for background driving, with pads on both sides

  • 1 Common (COM) with pads on both sides

• Built-in driving waveform for panel

• On chip 93 x 2 bit data latch

• SPI interface with ADDR_MAP address setting pin

• Built in programmable frequency divider to divide external clock signal (32 kHz) for IC operations.