产品特点 Features

• Single-chip LCD controller/driver
• 2-line display of up to 12 characters + 120 icons, or 1-line display of up to 24 characters + 120 icons
• 5 x 7 character format plus cursor; 5 x 8 for kana (Japanese) and user-defined symbols
• Icon mode for e.g. additional segment display section: reduced current consumption while displaying icons only
• Icon blink function
• Very low current consumption (20 uA to 200 uA):
  • Icon mode: <25 uA
  • Power-down mode: < 2 uA
• On-chip:
  • Configurable 4, 3 or 2 voltage multiplier, generating LCD supply voltage VLCD, independent of VDD, programmable by instruction (external supply also possible)
  • Temperature compensation of on-chip generated VLCD: -0.16 pct/K to -0.24 pct/K (programmable by instruction)
  • Generation of intermediate LCD bias voltages
  • Oscillator requires no external components (external clock also possible)
• Display data RAM: 80 characters
• Character generator ROM: 240 characters of 5 x 8 dots
• Character generator RAM: 16 characters of 5 x 8 dots; 3 characters used to drive 120 icons, 6 characters used if icon blink feature is used in application
• 4-bit or 8-bit parallel bus and 2-wire I²C-bus interface
• 18 row and 60 column outputs
• Multiplex rates (MUX) 1:18 (for normal operation), 1:9 (for single-line operation) and 1:2 (for Icon-only mode)
• Uses common 11 code instruction set (extended)
• Logic supply voltage range VDD1 - VSS1 = 1.8 V to 5.5 V (chip may be driven with two battery cells)
• VLCD generator supply voltage range VDD2 - VSS2 = 2.2 V to 4.0 V
• Display supply voltage range VLCD - VSS2 = 2.2 V to 6.5 V
• Direct mode to save current consumption for Icon mode and MUX 1:9 (depending on VDD2 and LCD liquid properties)
• CMOS compatible
• Remark: Icon mode is a way to save current. When only icons are displayed (i.e. only the lower two rows are active), a much lower operating voltage VLCD can be used and the switching frequency of the LCD outputs is reduced. In most applications it is possible to use VDD as VLCD.

应用

• Telecom equipment
• Point-of-sale terminals
• Portable instruments

功能框图