Epson HX-20 User Manual
Page 73
Serial
(Full and half duplex)
Connector
Input/ Output Level
Baud Rates
Pin Assignment
Peripheral
Cartridge
Connector
Input/ Output Level
Pin Assignment
Cartridge Type
ROM Cartridge
Not assigned
No cartridge
Not assigned
Microcassette
External Cassette
Microphone
Earphone
Remote
Bar Code Reader
Connector
Input Level
System Bus
Connector
Address Bus
Data Bus
Power Supply
Batteries
Type
Capacity
Operation
Data Integrity
Low Voltage
Recharge
5-Pin DIN
EIA RS-232C standard
150, 600, 4800, 38400
I: GND, 2: TXD, 3:
RXD, 4:
O U T . 5 : I N C G = G r o u n d
Special-Epson
T T L
1: SII, 2: SI/01l, 3: S01, 4: SI/02,
5: SI/03,6: SI/04,7: VB(Battery),
8: MII, 9: M02, 10: M01, II:
GND, 12: +5V (Switched)
MI1
SI1
S / 0 1
0
0
0
0
0
1
0
1
0
0
1
1
1
*
*
(* Doesn’t matter)
Miniature phone jack
Miniature phone jack
Subminiature phone jack
HSJ0861-01-440 (Seidenki)
TTL
40-Pin
16 bit
8 bit and control lines
Four NiCad batteries, internal,
Sub C type
1100 mA/ H (Approximately 50
hours running BASIC; less de-
pending on use of RS-232C port,
printer or optional microcassette)
4.5-6.0 V
4.0-6.0 V
4.5 v
Full charge within eight hours at
typical room temperature
69