![](http://datasheet.mmic.net.cn/30000/M30218MC-AXXXFP_datasheet_2358657/M30218MC-AXXXFP_71.png)
56
FLD controller
Mitsubishi microcomputers
M30218 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Figure 39. FLDC-related Register(1)
FLDC mode register
Symbol
Address
When reset
FLDM
035016
0016
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3
b2
b1
b0
Automatic display
control bit
0 : General-purpose mode
1 : Automatic display mode
FLDM0
FLDM1
FLDM2
FLDM3
Display start bit
0 : Stop display
1 : Display
(start to display by switching “0” to “1”)
Tscan control bits
00 : FLD digit interrupt
(at rising edge of each digit)
01 : 1 X Tdisp
10 : 2 X Tdisp
11 : 3 X Tdisp
0 : 16 timing mode
1 : 32 timing mode
Timing number control bit
Gradation display mode
selection control bit
0 : Not selecting
1 : Selecting (Note )
FLDM4
FLDM5
Note : When a gradation display mode is selected, a number of timing is max. 16 timing.
(Set the timing number control bit to “0”.)
Tdisp counter
count source selection bit
0 : f(XIN)/32
1 : f(XIN)/128
FLDM6
High-breakdown voltage
port drivability select bit
0 : Drivability strong
1 : Drivability weak
FLDM7
FLD output control register
Symbol
Address
When reset
FLDCON
035116
0016
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3 b2
b1
b0
FLDCON7
FLDCON5
FLDCON4
FLDCON2
FLDCON0
FLDCON6
P44 to P47 FLD
output reverse bit
P44 to P47 FLD
Toff is invalid bit
0 : Perform normally
1 : Toff is invalid
P97 dimmer output
control bit
0 : Output normally
1 : Dimmer output
CMOS ports: section of
Toff generate/not
generate bit
0 : section of Toff does NOT generate
1 : section of Toff generates
High-breakdown-voltage ports:
section of Toff
generate/not generate bit
0 : section of Toff does NOT generate
1 : section of Toff generates
Toff2
SET/RESET change bit
0 : gradation display data is reset at Toff2
(set at Toff1)
1 : gradation display data is set at Toff2
(reset at Toff1)
W
R
0 : Output normally
1 : Reverse output
Nothing is assigned.
In an attempt to write to this bit, write “0”. The value, if read, turns out to be “0”.
Nothing is assigned.
In an attempt to write to this bit, write “0”. The value, if read, turns out to be “0”.
Tdisp time set register
Symbol
Address
When reset
TDISP
035216
0016
Values that can be set
b7
b0
Counts Tdisp time. Count source is selected by Tdisp
counter count source select bit.
W
R
016 to FF16
Function
FLD blanking
interrupt (at falling
edge of last digit)
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b3b2
W
R