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ML9204 Datasheet

  • ML9204

  • 5 X 7 Dot Character ?24-Digit ?2-Line Display Controller/Dri...

  • 41頁

  • OKI

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OKI Semiconductor
ML9204-xx
GENERAL DESCRIPTION
PEDL9204-02
Issue Date: Oct. 12, 2004
Preliminary
5
脳
7 Dot Character
脳
24-Digit
脳
2-Line Display Controller/Driver with Character RAM (Built-in Key Scan)
The ML9204-xx is a 5
脳
7 dot matrix type vacuum fluorescent display tube controller driver IC which displays
characters, numerics and symbols of a maximum of 24 digits
脳
2 lines.
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.
Built-in key scan for 3-channel encoder type rotary switch and 5
脳
6 matrix key switch allow the user to receive
each switch input.
The ML9204-xx has low power consumption since it is made by CMOS process technology.
鈥?1 is available as a general-purpose code.
Custom codes are provided on customer鈥檚 request.
FEATURES
: 3.3 V鹵10% or 5.0 V鹵10%
鈥?/div>
Logic power supply (V
DD
)
鈥?/div>
VFD tube drive power supply (V
SEG
, V
COM
) : 20 to 60 V
鈥?/div>
VFD driver output current
(VFD driver output can be connected directly to the VFD tube. No pull-down resistor is required.)
鈥?Segment driver (SEGA1 to A35, SEGB1 to B35)
Only one driver output is high
: 鈥? mA (V
SEG
= 60 V)
All the driver outputs are high
: 鈥?50 mA (V
SEG
= 60 V)
鈥?Segment driver (ADA, ADB)
: 鈥?5 mA (V
SEG
= 60 V)
鈥?Grid driver (COM1 to 24)
: 鈥?5 mA (V
COM
= 60 V)
鈥?/div>
Content of display
SEGA1 to SEGA35 and ADA
鈥?CGROM_A
: 5
脳
7 dots 240 types (character data)
鈥?CGRAM_A
: 5
脳
7 dots 16 types (character data)
鈥?ADRAM_A
: 24 (display digit)脳 1 bit (symbol data; can be used for a cursor.)
鈥?DCRAM_A
: 24 (display digit)
脳
8 bits (register for character data display)
SEGB1 to SEGB35 and ADB
鈥?CGROM_B
: 5
脳
7 dots 240 types (character data)
鈥?CGRAM_B
: 5
脳
7 dots 16 types (character data)
鈥?ADRAM_B
: 24 (display digit)脳 1 bit (symbol data; can be used for a cursor.)
鈥?DCRAM_B
: 24 (display digit)
脳
8 bits (register for character data display)
鈥?/div>
Display control function
鈥?GCRAM
: Simultaneous output of COM1 to 24 can be set in 1 grid.
鈥?Display digits
: 1 to 24 digits (9- to 24-bit arbitrary setting)
鈥?Display duty (brightness adjustment)
: 0/1024 to 960/1024 stages
鈥?All lights ON/OFF
鈥?/div>
5 interfaces with microcontroller:DI/O,
CS, CP, RESET,
INT
鈥?/div>
Built-in key scan circuit for 5
脳
6 matrix key switch
鈥?/div>
Built-in key scan circuit for 3-channel encoder type rotary switch
鈥?/div>
Built-in oscillation circuit
Crystal oscillation or ceramic oscillation: 4.0 MHz (Typ)
鈥?/div>
Standby function
Inhibiting the oscillator circuit provides low power consumption.
鈥?/div>
Package options:
128-pin plastic QFP (QFP128-P-1420-0.50-K) (ML9204-xxGA)
1/41

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