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MSC1215-XX Datasheet

  • MSC1215-XX

  • 17 x 2 Duplex Driver with Dimming, Keyscan and A/D Converter...

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E2C0022-27-Y3
隆 Semiconductor
隆 Semiconductor
MSC1215-xx
This version: Nov. 1997
MSC1215-xx
Previous version: Jul. 1996
17
樓
2 Duplex Driver with Dimming, Keyscan and A/D Converter Function
GENERAL DESCRIPTION
The MSC1215-xx is a 1/2-duty vacuum fluorescent display tube driver implemented in Bi-
CMOS technology. This LSI consists of a 37-bit shift register, 34 latches, an analog dimming
circuit, (a PWM conversion circuit), a 3樓4 keyscan circuit, a 6ch-6-bit A/D converter and 17
segment drivers, and 2-grid pre-drivers.
The MSC1215-xx has capabilities of displaying audio system frequencies and various informa-
tions on a VFD tube for the automobile application and also interfacing with keyboard inputs and
on an analog volume input.
For automobile audio systems, the front panel functions (such as a frequency display, keyboard
input and analog voltage input from a volume) can be accomplished by this IC.
The analog dimming/PWM conversion modes can be selected automatically for the brightness
control, so this IC is applicable to any type of automobile without any change of the specifica-
tions.
The interface with a MCU can be done only with 3 wires (CS, DATA I/O and CLOCK signals).
Also, DATA I/O and CLOCK signal lines can be shared with other peripherals because of chip
select function by CS signal.
FEATURES
鈥?Power supply voltage
: V
DD
=8 to 18 V
鈥?Operating temperature range
: Ta=鈥?0 to +85擄C)
鈥?17-segment driver outputs (I
OH
=鈥?mA at V
OH
=V
DD
鈥?.8 V)
鈥?Built-in analog dimming circuit (6-bit resolution, user-programmable)
鈥?Built-in PWM conversion circuit (Lamp PWM signal to vacuum fluorescent display PWM
signal)
鈥?Built-in automatic-selection circuit for analog dimming/PWM conversion function
鈥?Built-in 6ch 6-bit A/D converter
鈥?Built-in 3
樓
4 Keyscan circuit
鈥?Built-in oscillation circuit (external R and C, f
OSC
=3.3 MHz)
鈥?Built-in Power-On-Reset circuit
鈥?Package:
42-pin plastic DIP (DIP 42-P-600-2.54) (Product name: MSM1215-xxRS)
xx indicates the code number.
1/22

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