UPD789304 Datasheet, PDF (25/64 Pages) NEC – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD789304, 789306, 789314, 789316
5.5 LCD Controller/Driver
The LCD controller/driver has the following functions.
(1) Enables automatic output of segment signals and common signals by automatically reading from display data
memory.
(2) Two types of display modes can be selected:
• 1/3 duty (1/3 bias)
• 1/4 duty (1/3 bias)
(3) Any of four frame frequency settings can be selected for each display mode.
(4) There are up to 24 segment signal outputs (S0 to S23) and four common signal outputs (COM0 to COM3).
(5) Operation using the subsystem clock is also supported.
Data Sheet U14384EJ1V0DS
25