lc75712e Sanyo Semiconductor Corporation, lc75712e Datasheet - Page 13

• Manufacturer Part Number: lc75712e
• Description: Dot Matrix Vfd Display Controller/driver
• Manufacturer: Sanyo Semiconductor Corporation

7. DCRAM data write ..............................<Specifies the DCRAM address and stores data at that address.>
8. ADRAM data write..............................<Specifies the ADRAM address and stores data at that address.>
*: Don’t care.
DA0 to DA5: DCRAM address
DA0....................LSB
DA5....................MSB
AC0 to AC7: DCRAM write data (character code)
AC0 ....................LSB
AC7 ....................MSB
This instruction writes the 8 bits of data AC0 to AC7 to DCRAM. This data is a character code (see Tables 3 to 5)
and is converted to 5 7 dot matrix display data using CGROM and CGRAM.
*: Don’t care.
RA0 to RA3: ADRAM address
RA0 ....................LSB
RA3 ....................MSB
AD1 to AD8: ADATA display data
There are 8 bits of additional display data, referred to as ADATA, in addition to the 5 7 dot matrix of display data
(MDATA). This data is used to generate arbitrary dot patterns without using CGROM or CGRAM. The figures show
the correspondence between these data types. In particular, when ADn = 1 (where n is an integer between 1 and 8),
the dot AAn will be turned on.
D23 D22 D21 D20 D19
D23 D22 D21 D20 D19
0
0
1
1
1
1
0
1
RA3 RA2 RA1 RA0
*
D18 D17 D16
D18 D17 D16
*
*
*
LC75710NE, 75711NE, 75712E
D15
D15
AD8
*
AD7 AD6 AD5 AD4 AD3 AD2 AD1
D14 D13 D12 D11 D10
D14 D13 D12 D11 D10
*
DA5 DA4 DA3 DA2 DA1 DA0 AC7 AC6 AC5 AC4 AC3 AC2 AC1 AC0
Code
Code
ADATA
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
D9
D9
AA1
AA2
AA3
AA4/G16
AA5/G15
AA6/G14
AA7/G13
AA8/G12
D8
D8
D7
D7
*
Corresponding output pin
D6
D6
*
D5
D5
*
D4
D4
*
D3
D3
*
D2
D2
No. 4907-13/21
*
D1
D1
*
D0
D0
*