STE2004 STMicroelectronics, STE2004 Datasheet - Page 33

• Manufacturer Part Number: STE2004
• 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
CS
SDOUT
SCLK
SDIN
CS
SCLK
SDIN
CS
D/C
DB7
SD/C
SD/C
SD/C
DB6
DB7
DB7
DB5
DB6
MSB
Command Write
DB4
DB5
note: 1) these data are not read by the display Diver
High-Z
High-Z
DB3
DB4
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)
SDOUT Buffer Configured in High Impedence
DB3
DB2
Write a "00000000" Instruction
END OF READING SEQUENCE
Source 9 pulses on SCLK and
DB2
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
Don't
DB3
DB3
Care
DB3
DB2
DB2
Don't
Care
DB2
DB1
DB1
Don't
Care
DB1
DB0
DB0
Don't
Care
LSB
DB0
D/C
High-Z
High-Z
LR0073
DB7
LR0075
STE2004
DB6
LR0074
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