PCF8820 Datasheet, PDF (39/60 Pages) NXP Semiconductors – 67 x 101 Grey-scale/ECB colour dot matrix LCD driver

Philips Semiconductors
67 × 101 Grey-scale/ECB colour dot matrix
LCD driver
STEP
43
SERIAL BUS BYTE
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
10010100
LCD
44
10000000
45
01000010
46
10000000
47
10101000
48
10000000
49
01000011
50
10000000
51
10111111
52
10000000
53
00000001
54
10000000
55
00001010
56
10000000
57
00000101
58
10000000
59
00000001
60
10000000
61
00010010
62
10000000
63
00001010
2000 Dec 07
39
Product specification
PCF8820
OPERATION
grey-scale/colour command page:
set grey-scale to 20
(GS₅ to GS₀ = 010100)
control byte: Co = 1, RS = 0
grey-scale/colour command page:
select grey-scale register 2
(GR₁ to GR₀ = 10)
control byte: Co = 1, RS = 0
grey-scale/colour command page:
set grey-scale register 2 to 40
(GS₅ to GS₀ = 101000)
control byte: Co = 1, RS = 0
grey-scale/colour command page:
select grey-scale register 3
(GR₁ to GR₀ = 11)
control byte: Co = 1, RS = 0
grey-scale/colour command page:
set grey-scale register 3 to 63
(GS₅ to GS₀ = 111111)
control byte: Co = 1, RS = 0
H₂ to H₀ independent command:
select function and RAM command
page (H₂ to H₀ = 000)
control byte: Co = 1, RS = 0
function and RAM command page:
select HVGen command page
(H₂ to H₀ = 010)
control byte: Co = 1, RS = 0
HVGen command page: enable
HVGen (HVE = 1) and select LOW
V_LCD programming range
(PRS = 0)
control byte: Co = 1, RS = 0
H₂ to H₀ independent command:
select function and RAM command
page (H₂ to H₀ = 000)
control byte: Co = 1, RS = 0
function and RAM command page:
select normal operation (PD = 0)
and vertical address mode (V = 1)
control byte: Co = 1, RS = 0
function and RAM command page:
select HVGen command page
(H₂ to H₀ = 010)