STE2004S STMicroelectronics, STE2004S Datasheet - Page 33

• Manufacturer Part Number: STE2004S
• Description: 102 x 65 Single Chip Lcd Controller / Driver
• Manufacturer: STMicroelectronics

Figure 41. 3-lines serial bus protocol - one byte transmission
Figure 42. 3-lines serial bus protocol - several byte transmission
Figure 43. 3-lines serial interface protocol in Reading Mode
Figure 44. 3-lines Serial Reading Sequence
SCLK
SDIN
SDOUT
CS
SCLK
SDIN
CS
SCLK
SDIN
CS
D/C
SD/C
SD/C
DB7
DB7
DB7
SD/C
DB6
DB6
DB5
Command Write
MSB
DB5
DB4
High-Z
High-Z
note: 1) these data are not read by the display Diver
DB4
DB3
2) SDIN and SDOUT can be short circuited if the processor can configure
Read the ID Number or the Status Byte On SDOUT
serial output buffers in high impedence during data read .
SDOUT Buffer becomes active (Low Impedence)
DB3
SDOUT Buffer Configured in High Impedence
DB2
DB2
Write a "00000000" Instruction
END OF READING SEQUENCE
Source 9 pulses on SCLK and
DB1
READING SEQUENCE
DB1
DB0
DB0
D/C
DB7
DB7
Don't
Care
DB7
DB6
DB6
Don't
Care
DB6
1
DB5
DB5
Don't
Care
DB5
STATUS BYTE
DATA Read
ID-Number
DB4
DB4
Don't
Care
LR0080
DB4
DB3
DB3
Don't
Care
DB3
DB2
DB2
Don't
Care
DB2
DB1
DB1
Don't
Care
DB1
LSB
DB0
DB0
Don't
Care
DB0
D/C
LR0073
High-Z
High-Z
DB7
STE2004S
LR0075
DB6
LR0074
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