S6B0721

Features:

`Driver Output Circuits
   - 65 common outputs / 132 segment outputs
`On-chip Display Data RAM
   - Capacity: 65 x 132 = 8,580 bits
`Microprocessor Interface
   - 8-bit parallel bi-directional interface with 6800-series or 8080-series
   - Serial interface (only write operation) available
`Function Set
   - Various instructions sets
   - H/W, S/W reset capable
`Built-in Analog Circuit
   - On-chip oscillator circuit
   - Voltage converter (x2, x3, x4, x5)
   - Voltage regulator (temperature coefficient: -0.05%/°C, -0.2%/°C)
   - Voltage follower
   - Electronic contrast control function (64 steps)
`Operating Voltage Range
   - Supply voltage (V_DD): 2.4 to 3.6 V
   - LCD driving voltage (V_LCD = V0 - V_SS): 4.0 to 15.0 V
`Low Power Consumption
   - 70 A Typ. (V<sub>DD</sub> = 3V, x4 boosting, V0 = 11V, internal power supply ON)
   - 10 A Max. (during power save [standby] mode)
`Package Type
   - Gold bump chip or TCP


Specifications

Parameter	Symbol	Rating	Unit
Supply voltage range	VDD	-0.3 to +7.0	V
	VLCD	-0.3 to +17.0	V
Input voltage range	VIN	-0.3 to VDD +0.3	V
Operating temperature range	TOPR	-40 to +85
Storage temperature range	TSTR	-55 to +125

NOTES:
1. VDD and VLCD are based on VSS = 0V.
2. Voltages V0 V1 V2V3 V4 VSS must always be satisfied. (VLCD = V0 VSS)
3. If supply voltage exceeds its absolute maximum range, this LSI may be damaged permanently.
It is desirable to use this LSI under electrical characteristic conditions during general operation.
Otherwise, this LSI may malfunction or reduced LSI reliability may result.


Description

The S6B0721 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 65 commons and 132 segments driver circuits. This chip is connected directly to a microprocessor, accepts serial or 8-bit parallel display data and stores in an on-chip Display Data RAM of 65 x 132 bits. It provides a high-flexible display section due to 1-to-1 correspondence between on-chip display data RAM bits and LCD panel pixels. And it performs display data RAM read/write operation with no externally operating clock to minimize power consumption. In addition, because it contains power supply circuits necessary to drive liquid crystal, it is possible to make a display system with the fewest components.