upd161608 Renesas Electronics Corporation., upd161608 Datasheet - Page 22

• Manufacturer Part Number: upd161608
• Description: 176-rgb X 220-dot 1-chip Driver Ic For 262,144-color Tft-lcd Display
• Manufacturer: Renesas Electronics Corporation.

7. SYSTEM INTERFACE
7.1 Serial Data Transfer
serial data transfer at the rising edge of CSB input.
matches the 6-bit device identification code assigned to the
subsequent data string.
different chip addresses must be assigned to a single
register select bit (RS): that is, when RS = 0, data can be written to the index register or status can be read, and when RS
= 1, an instruction can be issued. Read or write is selected according to the eighth bit of the start byte (R/W bit). The data
is read when the R/W bit is 0, and is written when the R/W bit is 1.
transferred with the MSB first. All
the instructions are internally executed. After the start byte has been read, the first byte is transmitted internally as the
upper eight bits of the instruction and the second byte is transmitted internally as the lower eight bits of the instruction.
22
(4) After reading the start byte, the
(3) The ID pin can determine the least significant bit of the identification code. The five upper bits must be 01110. Two
It indicates serial data transfer as follows.
(1) The
(2) The
Instruction
Caution ID pin selects ID bit.
Input
μ
μ
Start byte format
PD161608 initiates serial data transfer by transferring the start byte at the falling edge of CSB input. It ends
PD161608 is selected when the 6-bit chip address in the start byte transferred from the transmitting device
Transfer Bit
D15
15
IB
R/W Bit
0
0
1
1
D14 D13 D12 D11 D10
14
IB
13
IB
1st transfer (upper)
Transfer start
μ
12
IB
PD161608 instructions are 16 bits. Two bytes are read with the MSB first, and then
Figure 7−1. Instruction of Serial Data Transfer
μ
S
PD161608 reads or writes the subsequent data byte-by-byte. The data is
RS Bit
11
IB
0
1
0
1
Table 7−2. RS and R/W Bit Function
Table 7−1. Start Byte Format
10
IB
Data Sheet S17594EJ2V0DS
1
0
D9
IB
9
Writes indexes into IR
Writes instruction into control registers
Status read
Instruction data read
μ
PD161608 because the seventh bit of the start byte is used as a
D8
IB
Instruction code
8
2
1
μ
PD161608. The
Device ID code
3
1
D7
IB
7
D6
IB
6
4
1
Operations
μ
PD161608, when selected, receives the
D5
IB
5
2nd transfer (lower)
5
0
D4
IB
4
D3
IB
3
ID
6
D2
IB
2
μ
RS
D1
IB
7
1
PD161608
D0
IB
0
R/W
8