Display Timing Signal Pins - Epson S1D15722 Series Technical Manual

Pin name I/O
Pin for switching MPU interface.
C86 I
When serial interface is selected, set to LOW.
Pin for monitoring the operating state of IC.
Becomes ERR = HIGH in the initial state following resetting.
ERR O Becomes ERR = LOW after resetting.
If a bit-flip occurs in the register which is part of internal logic because of external
noise or similar reason, becomes ERR = HIGH. When ERR = HIGH, re-write all
commands. After resetting, returns to WRR = LOW.
recommended to re-write data to display data RAM.

5.3 Display Timing Signal Pins

Pin name I/O
Pin for selecting master/slave operation.
Master operation outputs timing signal required for LCD display and slave
operation inputs timing signal required for LCD display.
synchronization in LCD display system.
Sets as shown in the table below depending on the state of M/S and CLS.
M/S I
Pin for selecting enable/disable built-in oscillation circuit for display clock.
When CLS = LOW, display clock is input from the CL pin.
To use this IC on master or slave, set each CLS pin to the same level.
CLS I
Display clock input/output pin. Sets as shown in the table below depending on the
state of M/S and CLS.
CL I/O
To use this IC on master/slave, connect each CL pin.
S1D15722D01B000 Technical Manual (Rev.1.1)
C86 = HIGH : 68 series MPU interface
C86 = LOW : 80 series MPU interface
ERR = LOW : Normal operating state
ERR = HIGH : Initial state or error detection
M/S = HIGH : Master operation
M/S = LOW : Slave operation
Oscillation
M/S CLS
circult
HIGH Enabled
HIGH
LOW Disabled
HIGH Disabled
LOW
LOW Disabled
CLS = HIGH : Built-in oscillation circuit enabled
CLS = LOW : Built-in oscillation circuit disabled (external input)
Display clock
Use of built-in oscillation circuit
External input
M/S CLS
HIGH
HIGH
LOW
HIGH
LOW
LOW
Description
Description
CL
Output
Input
Input
Input
Master
HIGH
LOW
CL
Output
Input
Input
Input
EPSON
5. PIN DESCRIPTION
Number of
At this time it is also
Number of
This causes
____
FR, DOF,
F1, F2, SYNC
Output
Output
Input
Input
Slave
HIGH
LOW
pins
1
1
pins
1
1
1
11