OKI Semiconductor

FEDL9208-01

Issue Date: Feb. 23, 2004

ML9208-xx

5

× 7 Dot Character × 16-Digit Display Controller/Driver with Character RAM

1/33

GENERAL DESCRIPTION

The ML9208-xx is a dot matrix vacuum fluorescent display tube controller driver IC which displays characters,

numerics and symbols.

Dot matrix vacuum fluorescent display tube drive signals are generated by serial data sent from a micro-controller.

A display system is easily realized by internal ROM and RAM for character display.

FEATURES

• Logic power supply and vacuum fluorescent display tube drive power supply (V

: 3.3 V

±10% or 5.0 V ±10%

• Fluorescent display tube drive power supply (V

• VFD driver output current

(VFD driver output can be connected directly to the fluorescent display tube.

No pull-down resistor is

required.)

- Segment driver (SEG1 to SEG35)

: –6 mA

- Segment driver (AD1 and AD2)

- Grid driver (COM1 to COM16)

• General output port output current

- Output driver (P1 and P2)

:

±1 mA (V

±2 mA (V

• Content of display

- CGROM

5

× 7 dots

: 248 types (character data)

- CGRAM

5

× 7 dots

: 8 types (character data)

- ADRAM

16 (display digit)

× 2 bits (symbol data)

- DCRAM

16 (display digit)

× 8 bits (register for character data display)

- General output port

2 bits

(static operation)

• Display control function

- Display digit

: 9 to 16 digits

- Display duty (contrast adjustment)

: 8 stages

- All lights ON/OFFs

• 3 interfaces with microcontroller

: DA,

CS, CP (4 interfaces when RESET is added)

• 1-byte instruction execution (excluding data write to RAM)

• Built-in oscillation circuit (external R and C)

• Package options:

64-pin plastic QFP (QFP64-P-1414-0.80-BK) (ML9208-xxGA)

64-pin plastic SSOP (SSOP64-P-525-0.80-K) (ML9208-xxMB)