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MSC1201 Datasheet(PDF) 5 Page - OKI electronic componets

Part No. MSC1201
Description  60-Bit VFD Tube Driver with Digital Dimming and PWM Conversion Function
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Maker  OKI [OKI electronic componets]
Homepage  http://www.oki.com
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MSC1201 Datasheet(HTML) 5 Page - OKI electronic componets

 
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¡ Semiconductor
MSC1201-xx
5/20
PIN DESCRIPTIONS
VDD
Power Supply
Dimming select input. When the high level is input, daylight-mode output duty cycle
is about 100% for each grid time for PWM conversion and digital dimming mode.
When the low level is input, the dark-mode output duty cycle is determined by the
duty cycle of the PWM signal input to PWM IN and the digital dimming output duty
cycle is determined by digital dimming data.
Serial clock input. Data that is input through "DATA" pin is input and output by
synchronization with the rising edge of the serial clock.
Chip select input. Only when the high level is input to this pin, interfacing with a MCU
is available through "CLOCK" and "DATA" pins.
Therefore, 2-signal lines of "CLOCK" and "DATA" can be shared with other peripherals.
CS
CLOCK
I
I
INH
TEST1
Serial data output. Data is shifted out at the rising edge of the serial clock with the
delay of 64-bit time. This pin is used for cascading this LSI with other drivers such
as a LED driver.
PWM signal input.
Pin
Symbol
GND
Description
Segment output pin for VFD
Input which receives display data and digital dimming data from a MCU. Data is
shifted in at the rising edge of the shift clock.
OSC1
SEG1-30
I/O
I
O
Ground
O
GRID1, 2
Grid 1 and Grid 2 output pins for VFD
OSC0
RC oscillation pins. Connect a resistor between OSC1 and OSC0 pin and a capacitor
between OSC0 and GND pin.
I
O
DATA
Test signal input pin. As this pin is used for shipping test of the LSI, leave open in the
normal operation mode.
DATA
OUT
PWMIN
VK
I
I
I
I
O
Blank Display input with a built-in pull-up resistor. When set to "L", all the drivers
output "L". When display duly is not controlled by this signal, leave this pin open.
1-9
24-44
10, 11
16
15
18
20
19
23
22
14
21
13
12
17


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