ml9270 Oki Semiconductor, ml9270 Datasheet - Page 8

• Manufacturer Part Number: ml9270
• Description: 33-segment Vfd Driver
• Manufacturer: Oki Semiconductor

FUNCTIONAL DESCRIPTION
General Description
The ML9270A is a CMOS multi-digit display driver and consists of a 34-bit shift register, a 33-bit latch, and a
33-bit VF tube driver.
Pin Description
(1) DATA
(2) CLOCK
(3) LOAD ENABLE
(4) BLANK_BAR
(5) OUTPUT1 to 33
(6) DATA OUT
(7) V
(8) V
(9) GND
OKI Semiconductor
DD
DISP
This is a serial data input terminal of the 34-stage shift register.
This is a Clock input terminal of the shift resister to shift an input signal at its leading edge.
This is an input terminal to transfer the data from the shift register to the data latch circuit to hold it.
After the data is held, the terminal initializes the data of the shift register.
These functions are executed at the leading edge of an input signal.
This is an input terminal to turn all the OUTPUT terminals OFF(Low), which contains a pull-up
resistor.
These are output terminal for the VFD tube driver.Each terminal outputs data which is transferd from
the corresponding bit of the shift register and held in the data latch circuit.
register.
This is a Logic power supply terminal.
This is a driver output power supply terminal.
This is a grounding terminal.
This is a data output terminal of the shift register to output data on the last stage of the 34-stage shift
PEDL9270A-01
ML9270A-xx
8/13