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