Read/Write Of Data; Write Of Data; Read Of Data - Epson RA4803SA Applications Manual

RA4803SA

8.6. Read/Write of data

For both read and write, first set up chip condition (internally CE="H") to CE="H" , then specify the 4-bits address,
and finally read or write in 8-bits units. Both read and write use MSB-first. In continuous operation, objected
address is auto incremented. Auto incrementing of the address is cyclic, so address "F" is followed by address "0".

8.6.1. Write of data

1) One-shot writing
C E
CLK
D I
D O
2) Continuous writing
C E
CLK
D I
D O
*When writing data, the data needs to be entered in 8-bits units.
If the input of data in 8-bits unit is not completed before CE input falls, the 8-bits data will not be written
properly at the time CE input falls.

8.6.2. Read of data

1) One-shot reading
C E
CLK
D I
D O
2) Continuous reading
C E
CLK
D I
D O
1 2 3 4 5 6 7
0 0 0 x A3 A2 A1
Mode Address N
Hi-Z
1 2 3 4 5 6 7
0 0 0 x A3 A2 A1
Mode Address N
Hi-Z
1 2 3 4 5 6 7
1 0 0 x A3 A2 A1
Mode Address N
Hi-Z
1 2 3 4 5 6 7 8
1 0 0 x A3 A2 A1 A0
Mode Address N
Hi-Z
8 9 10 11 12 13 14 15
A0 D7 D6 D5 D4 D3 D2 D1
Data N
8 9 10 11
A0 D7 D6 D5 D1 D0 D7
Data N
8 9 10 11 12 13 14 15
A0
D7 D6 D5 D4 D3 D2 D1
Data N
9 10 11
D7 D6 D5 D1 D0 D7
Data N
Page - 24
16
D0
D6 D1 D0 D7 D6
Data N+1 Data N+m
16
D0
D6 D1 D0 D7 D6 D1
Data N+1 Data N+m
ETM38E-03
D1 D0
D0