Seiko Instruments G1216B1N000 user manual Reset time, Rise time 200

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AN.No.G1216B1N000-3D0E

3.3Reset Function

Setting the RST terminal to a low level when the power is on allows for initial setup.

Display OFF

Display start line register: Set address 0.

While the RST remains at a low level, instructions other than the status read cannot be accepted. Execute other instructions after confirming that DB4=0 (reset release) and DB7=0 (ready) , using the status read instruction.

The power conditions for power-on initial setup are as follows:.

Item	Symbol	Min	Typ.	Max	unit

Reset time	tRST	1.0			s

Rise time	tr			200	ns

4.5V

VDD

RST

tRST

0.7VDD

0.3VDD

If the RESET is executed during operation, retention of the contents of all registers (excluding an ON/OFF register) and the RAM is not guaranteed. Always set them again.

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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 DB2CS2 CS1 Circuit ConfigurationV c, V d, V f FRM CS R/WLSB MSBBusy Page COM4 COM1COM2 COM3Operational Amplifier Bias R2= 9 4 R1= 5 R1 MPU Operating InstructionsCS1 CS2 Test point RL = 2.4 k = 11 k 450140 To DB7Rise time 200 Reset timeDetailed explanation Display ON/OFF Code FunctionD/I 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