IC BLOCK DIAGRAM & DESCRIPTION
IC601 MPD16315GB-3BS(VFD Driver)
14SG1/KS1
15SG2/KS2
16SG3/KS3
Control
17SG4/KS4
DIN 718SG5/KS5
19
DOUT 6SerialSG6/KS6
DataSegment20SG7/KS7
CLK 8Display Memory
InterfaceDriver
STB 9(24 bits x 17 Words)21SG8/KS8
22SG9/KS9
Grid
Driver23SG10/KS10
24SG11/KS11
Key Scan
25SG12/KS12
Output
OSC 5OSCTI~inc Generator26SG13/KS13
27SG14/KS14
28SG15/KS15
30SG16/KS16
31SG17/GR12
Key Moter Memory
32SG18/GR11
33SG19/GR10
34SG20/GR9
35SG21/GR8
36SG22/GR7
LED1 137SG23/GR6
LED2 238LEDSG24/GR5
Driver
LED3 3
LED4 442GR1
Grid41GR2
Driver40GR3
Driving Circuit
39GR4
10111330
K1K2VDD GND VEE
Pin NameI/ODescriptionPin No.
LED1 to LED4OLED Output Pin1 to 4
Oscillator Input Pin
OSCIA resistor is connected to this pin to5
determinc the oscillation frequency
Data Output Pin (N-Channel, Open-Drain)
DOUTOThis pin outputs scrial data at the falling6
cdge of the shift clock (starting from the lower bit)
Data Input Pin
DIN
IThis pin inputs serial data at the rising cdge7
(Schmitt Trigger)
of the shift clock (starting from the lower bit)
Clock Input Pin
CLKIThis pin reads serial data at the rising cdge8
(Schmitt Trigger)and outputs data at the falling cdge.
Serial Interface Strobe Pin
STBThe data input after the STB has fallen is
I9
(Schmitt Trigger)processed as a command.
When this pin "HIGH",CLK is ignored,
Key Data Input Pins
K1 to K2IThe data inputted to these pins are fatched10, 11
at the end of the display cycle.
VSS-Logic Ground Pin12, 44
VDD-Logic Power Supply13, 43
High-Voltage Segment Output Pins
SG1/KS1 to SG16/KS16O14 to 29
Also acts as the Key Source
VEE-Pull-Down Level30
SG17/GR12 to SG24/GR5OHigh Voltage Segment/Grid Output Pins31 to 38
GR4 to GR1OHigh-Voltage Grid Output Pins39 to 42
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