Seiko Instruments G1216B1N000 user manual Reset

Page 23

(5)Status read

Code

AN.No.G1216B1N000-3D0E

R/W

D/I

DB7

 

 

 

DB0

 

 

1

0

BUSY

0

ON/OFF

RESET

0

0

0

 

0

 

 

 

 

 

 

 

 

 

 

 

 

BUSY:

When BUSY=1, it means that the the module is operating internally and the next instruction is

 

not accepted until BUSY=0. After confirming that BUSY=0, it is necessary to perform the

 

next write.

ON/OFF: Indicates that the display is OFF when ON/OFF=1.

 

Indicates that the display is ON when ON/OFF=0.

RESET:

Indicates that initial setup is performed by the RST signal.

 

Indicates that the initialization is being performed when RESET=1 and instructions other than

 

the Status Read instruction are not accepted.

 

When RESET=0, initialization is completed and operation status is normal.

(6) Display data write

Code

R/W

D/I

DB7

 

 

 

 

 

DB0

 

 

 

 

 

0

1

 

D

 

D

D

D

D

D

D

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Upper bits

 

Lower bits

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Writes 8-bit binary data DDDDDDDD in the display data RAM. After the write is completed, the Y- address is automatically advanced by one

(7) Display data read

code

R/W

D/I

DB7

 

 

 

 

 

DB0

 

 

 

 

 

1

1

 

D

 

D

D

D

D

D

D

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Upper bits

 

Lower bits

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Read 8-bit binary data DDDDDDDD from the display data RAM. After read is performed, the Y- address is automatically advanced by one. A dummy read is necessary once, immediately after the address set is completed. For details, refer to segment driver output register section.

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Contents AN.No.G1216B1N000-3D0E USER’S ManualCopyright 1993 by Seiko Instruments Inc Contents General Voltage +80 Temperature StorageSymbol Conditions Min Typ Max Unit Input High Power supply voltage25 C Vopr=13.0 Min Typ Max Unit Remark25 C Vopr=13.0 Viewing angle ∅ = 25 C Vopr=13.0 Contrast−20 To +70 Storage temp. range AN.No.G1216B1N000-3D0E Definition of response timeLedc LedaNumber of LED Chips=20DB3 DB0DB1 DB2V c, V d, V f Circuit ConfigurationCS2 CS1 FRM CS R/WLSB MSBBusy Page COM4 COM1COM2 COM3Operational Amplifier Bias R2= 9 4 R1= 5 R1 CS1 CS2 Operating InstructionsMPU Test point RL = 2.4 k = 11 k 450140 To DB7Rise time 200 Reset timeD/I FunctionDetailed explanation Display ON/OFF Code Display start line =2 Display start line=3 AN.No.G1216B1N000-3D0E Display start line CodeDB7 DB0 Display start line=0 Display start line=1AN.No.G1216B1N000-3D0E Address page set Code Display Data RAM Address ConfigurationReset Variable resistor Voltage V opr 13.5 13.0 12.5 11.5 10.5=10 k Ω =1.2 k ΩLeda Ledc =Input voltage power voltageV=LED forward voltage =Allowable LED forward current aIorq RST CS1 MPU Connection DiagramZ80 PIO D0 to D7 A0 to A7 DB0 to DB7 A0 to A15 DecoderPrecautions 11, 12, 17 9, 11, 12, 17, 18, 19LC drive voltage 10, 16, 17Seiko Instruments Inc