Specifications

5–38 EPSON
SED1225 Series
OPTION LIST
The SED 1225 has the following options. Options are
available exclusively for users. Please contact our Sales
Department for information.
• The following shows how to define the name of the
product compatible with options:
Example: SED1225D
*B
↑
Option compatibility column
Specification of character generator ROM
(CGROM)
The SED1225 incorporates a characters generator ROM
consisting of up to 256 types of characters, with each
character size featuring 5 × 7 (8) dots. The SED1225
CGROM is designed as a masked ROM, and is compatible
with the CGROM for exclusive use of the user. For the
standard CGROM, see the Character Font Table.
Specifications of external clock
The SED1225 has an external clock terminal which is
provided with two types of functions;
fOSC and 4 × fOSC.
Either fOSC or 4 × fOSC can be selected according to the
user’s requirements.
Built-in oscillation External clock External clock
fOSC fOSC 4 × fOSC
Standard ●● ●● ×
Optional ●● × ●●
The standard external clock specifications are set on the fOSC.