MSC1201-XX OKI electronic componets, MSC1201-XX Datasheet - Page 5

• Manufacturer Part Number: MSC1201-XX
• Description: 60-Bit VFD Tube Driver
• Manufacturer: OKI electronic componets

¡ Semiconductor
PIN DESCRIPTIONS
10, 11
24-44
Pin
1-9
16
15
18
20
19
23
22
14
21
13
12
17
Symbol
GRID1, 2
SEG1-30
PWMIN
CLOCK
TEST1
OSC0
OSC1
DATA
DATA
GND
OUT
INH
V
CS
VK
DD
I/O
—
— Ground
O
O
O
O
I
I
I
I
I
I
I
I
Segment output pin for VFD
Grid 1 and Grid 2 output pins for VFD
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.
Input which receives display data and digital dimming data from a MCU. Data is
shifted in at the rising edge of the shift clock.
Serial clock input. Data that is input through "DATA" pin is input and output by
synchronization with the rising edge of the serial clock.
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.
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.
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.
Test signal input pin. As this pin is used for shipping test of the LSI, leave open in the
normal operation mode.
Power Supply
RC oscillation pins. Connect a resistor between OSC1 and OSC0 pin and a capacitor
between OSC0 and GND pin.
Description
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