FR-155
13
Q752:M66004F (FL Tube Driver)
Segment
output circuit
CG ROM
(35bit 160)
CG RAM
(35bit 16)
Decoder
Decoder
Display code
register
Serial
receive
circuit
Code /
command
control
circuit
Display
control
register
Clock
generator
Display controller
Digit
output circuit
Output port
(2bits)
code
write
RAM
write
code
select
SEG00
SEG26
SEG35
SEG27
Segment
output
P0
P1
Output
ports
Chip select
input
CS
DIG00
DIG11
DIG12
DIG15
Digit
outputs
Clock
input
XIN
Clock
output
XOUT
Reset
input
RESET
Shift clock
input
Serial data
input
SCK
SDATA
18
16
15
13
14
17
22
21
23
33
31
59
61
1
64
12
These pins are used to connect to digit pins of VFD.
RESET
Reset input
This pin is used to initialize the internal state on the M66004
CS
Chip select input
"L" : communication with the MCU is possible.
"H" : any instruction from teh MCU is neglected.
SCK
Shift select input
At the rising edge from "L"to"H" , input data is shifted.
SDATA
Serial data input
Character code or command data to display is input from MSB.
XIN,
XOUT
Clock input
Clock output
Set oscillation frequency
DIG00 -
DIG15
Digit output
SEG00 -
SEG35
Segment output
P0,PI
Output port (static operation)
VSS
GND
VP
Negative power supply for VFD drive.
VCC1
VCC2
Positive power supply for internal logic.
Positive power supply for high-pressure-resistant output port.
Symbol
Pin name
Function
Pin No.
13
14
15
16
21,
22
1-12
61-64
23-31
33-59
17,18
19
60
22
32
These pins are used to connect to segment pins of VFD.
