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PDF MSM9223 Data sheet ( Hoja de datos )
| Número de pieza | MSM9223 | |
| Descripción | 27-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming / ADC and Keyscan | |
| Fabricantes | OKI electronic componets | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MSM9223 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
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E2C0044-19-96
¡¡SemiconSduectomr iconductor
MSM9223
This version: SMepS.M19992923
Previous version: Aug. 1999
27-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Keyscan
GENERAL DESCRIPTION
The MSM9223 is a full CMOS controller/driver for Duplex or Triplex vacuum fluorescent
display tube. It conststs of 27-segment driver outputs and 3-grid pre-driver outputs, so that it
can drive directly up to 81-segment VFD.
MSM9223 features a digital dimming function, a 6-ch ADC, a 5 ¥ 5 keyscan circuit and an encoder
type switch interface.
MSM9223 provides an interface with a microcontroller only by three signal lines: DATA I/O,
CLOCK and CS.
FEATURES
• Supply voltage (VDD)
• Duplex/Triplex selectable
: 8 to 18.5V (Built-in 5V regulator for logic)
• Applicable VFD tube
: 2 Grids ¥ 27 Anodes VFD tube
: 3 Grids ¥ 27 Anodes VFD tube
• 27-segment driver outputs
: IOH=–5mA at VOH=VDD–0.8V (SEG1 to 19)
IOH=–10mA at VOH=VDD–0.8V (SEG20 to 27)
• 3-grid pre-driver outputs
: IOL=10mA at VOL=2V
• Built-in digital dimming circuit (10-bit resolution)
• Built-in 6-ch A/D converter
• Built-in 5 ¥ 5 keyscan circuit
• Interface circuit for an encoder type rotary switch
• Built-in oscillation circuit (external R and C)
• Built-in Power-On-Reset circuit
• Package:
64-pin plastic QFP (QFP64-P-1420-1.00-BK) Product name: MSM9223GS-BK
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1 page  
¡ Semiconductor
MSM9223
Pin
32
30, 31
25
Symbol Type
Description
DIM OUT
O Dimming pulse output.
Connect this pin to the slave side DIM IN pin.
Synchronous signal input.
SYNC OUT 1, 2 O Connect these pins to the SYNC IN1 and SYNC IN2 pins
of a slave side.
OSC0
I/O
RC oscillator connecting pins.
Connect a resistor (R2) between the VCC and OSC0 pins,
VCC
R2
and a capacitor (C2) between the OSC0 pin and the GND, OSC0
C3
C2
and a capacitor (C3) between the VCC and the GND. C3 is for VCC stabilization.
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¡ Semiconductor
Output Timing (Duplex Operation)
(The dimming data is 1016/1024)
*1bit time=4/fOSC
2048bit times (1 display cycle)
GRID1
1016bit times
8bit times
1016bit times
8bit times
GRID2
1016bit times
GRID3
SEG1-27
DIM OUT
SYNC OUT1
SYNC OUT2
3bit times
1019bit times
1019bit times
1019bit times
1029bit times
5bit times
1019bit times
5bit times
1019bit times
5bit times
1029bit times
5bit times
1019bit times
5bit times
1019bit times
5bit times
1019bit times
5bit times
1019bit times
5bit times
1029bit times
Output Timing (Triplex Operation)
(The dimming data is 1016/1024)
*1bit time=4/fOSC
3072bit times (1 display cycle)
GRID1
1016bit times
8bit times
GRID2
1016bit times
8bit times
GRID3
3bit times
5bit times
1016bit times
5bit times
SEG1-27
1019bit times
1019bit times
5bit times
1019bit times
5bit times
DIM OUT
1019bit times
1019bit times
5bit times
1019bit times
5bit times
SYNC OUT1
1019bit times
1029bit times
5bit times
1019bit times
5bit times
SYNC OUT2
1029bit times
1019bit times
1019bit times
MSM9223
VDD
8bit times D-GND
VDD
D-GND
VDD
5bit times D-GND
VDD
5bit times D-GND
5V
5bit times L-GND
5V
5bit times L-GND
5V
L-GND
VDD
8bit times D-GND
VDD
D-GND
VDD
5bit times
5bit times
D-GND
VDD
D-GND
5V
5bit times
L-GND
5V
5bit times
L-GND
5V
L-GND
11/24
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet MSM9223.PDF ] | |
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