features

? 96 x 65-dot graphics display lcd controller/driver for black/white stn lcd

? ram capacity: 96 x 65 = 6,240 bits

? 8-bit parallel bus interface for both 8080 and 6800 series,

3-wire/4-wire write serial peripheral interface (spi),  

i

2

c interface

? direct ram data display using the ddram.  

  when ram data bit is 0, it is not displayed.   when ram data bit is 1, it is displayed.  

  (at normal display)

? many command functions:  

display data write, display on/off, normal/reverse display, page/column address set, lcd bias

set, electronic volume register set, v0 voltage regulator range set, segment & common driver

direction select, power save.

? power supply voltage:

- vdd     = 1.6 ~ 3.6 v (digital, interface and analog power input range)

- vdd1   = 2.4 ~ 3.6 v (analog power input range)

- vdd2   = 2.4 ~ 3.6 v (pump power input range)

- vlcd = 4 ~ 12.5v (lcd display power range @ ta=25℃)

vlcd = 2.97 ~ 10.56v (when use internal power circuit)

? programmable 4x / 5x on chip dc-dc converter  

? temperature compensat ion : -0.06%/℃and -0.11%/℃

? on chip lcd driving voltage generator or external power supply selectable

? 128 *2-step contrast adjuster and on chip voltage follower

? on chip oscillation with no external components and hardware reset

general description

the nt7543 is a single-chip lcd driver for dot-matrix liquid crystal  displays, which is directly

connectable to a microcomputer bus. it accepts 8-bit parallel or serial display data directly sent from a

microcomputer and stores it in an on-chip display ram. it generates an lcd drive signal independent

of the microprocessor clock.

the set of the on-chip display ram of 96 x 65 bits and a one-to-one correspondence between lcd

panel pixel dots and on-chip ram bits permits implementation of displays with a high degree of

freedom. the nt7543 contains 96 segment output circuits and 65 common output circuits.

no external operation  clock is required for ram write operations. accordingly, this driver can be

operated with a minimum current consumption and its on-board low-current-consumption liquid crystal

power supply can implement a high-performance handy display system with minimum  current

consumption and the smallest lsi configuration.