Sharp DX-SX1H, Руководство по обслуживанию

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DX-SX1H
– 42 –
IC201 VHiMN12510F-1: FL Driver (MN12510F)
18 VDD Power supply terminal Input VDD: +5V
±
0.5V
21 VSS VSS: 0V
16 VPP FLP driver power supply Input VPP: VDD - 35V
Applies voltage to pull-down resistor SEG0-7 and DGT0-7.
19 OSCI Clock input Input Oscillation input terminal
20 OSCO Clock output Oscillation output terminal
To OSCI in case of clock input from outside by separately excited
oscillation.
22 NCS Chip select input Input L: Serial input permitted
H: Serial input prohibited
23 SCK Serial clock input Input Clock input for serial transfer
24 SDI Serial data input Input Serial data input:
Command data, address data, indication data, control register
data or port output data is input.
25* SDO Serial data output Output Serial data output:
Key scan input data or port input data is output.
26*-30* P30-P34 Key scan input Input/Output 5 bits.
Can be switched to key scan input, general-purpose input or
general-purpose output by bit unit.
The pull-down resistor is between VSS terminals.
General-purpose output: high current output for driving LED
31-38 SEG0-SEG7 High tension output Output 8-bit high tension output port. (Segment output)
Output type is Pch open drain, and pull-down resistor is built in
between VPP terminals.
39-42 P10-P13 High tension output Output 4-bit high tension output port.
SEG8-SEG11 Can be switched to general-purpose output/segment output by bit
unit. Output type is Pch open drain.
43,44, P20-P23 High tension output Input/Output 4-bit high tension output port.
1,2 DGT12/SEG15- Can be switched to general-purpose input/general-purpose output/
DGT15/SEG12 segment output/digit output by bit unit.
Output type is Pch open drain.
High current output for driving LED
3-6 P00-P03 High tension output Output 4-bit high tension output port.
DGT8-DGT11 Can be switched to general-purpose output/digit output by bit unit.
Output type is Pch open drain.
7-10, DGT0-DGT7 High tension output Output 8-bit high tension output port. (Digit output)
12-15 Output type is Pch open drain, and pull-down resistor is built in
between VPP terminals.
11* NC — — Not used.
Pin No. Terminal Name Name
FUNCTION TABLE OF IC
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Input/Output Function
)
Used to connect ceramic oscillation
terminal.
Figure 42 BLOCK DIAGRAM OF IC
S B ( 8 )
L A T C H ( 8 )
LATCH(5)
D G T ( 1 6 ) S E G ( 1 6 )
MPL MPL MPL
NCS SCK SO1 SO0 VPP VDD VSS OSC1 OSC2
8 8 5
4
4
4 4 4 4 4
4 4 4
K E Y
M A T R I X
F L P
D0 D7D8 D11 S11 S8 S7 S0 P34 P30 DS12 DS15
(P00)
(P03) (P20) (P23) (P13) (P10)
TIMING
GENERATION
CIRCUIT
INSTRUCTION
DECODER
SHIFT REGISTER
( 8 x 3 2 ) x 2
5 x 1 2