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 (VDD)

: 3.3 V ±10 or 5.0 V ±10

? Fluorescent display tube drive power supply (VFL) : VDD –20 V to VDD –42 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 (VFL = VDD –42 V)

- Segment driver (AD1 and AD2) : –15 mA (VFL = VDD –42 V)

- Grid driver (COM1 to COM16) : –30 mA (VFL = VDD –42 V)

? General output port output current

- Output driver (P1 and P2) : ±1 mA (VDD = 3.3 V ±10)

±2 mA (VDD = 5.0 V ±10)

? 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)