28
TTL, RS232, 3.3V / 5V 12-Pin ZIF Connector
Pin Signal Name Function
1 TTLINV Input: TTL RS232 Polarity Control with 33.2k ohm Pull-Up
2 +3.3V or 5.0V Power: Supply Voltage Input, +3.3V ± 0.3V or +5.0V ± 5%
3 GND Ground: Power and Signal Ground
4 RxD Input: TTL Level RS232 Receive Data
5 TxD Output: TTL Level RS232 Transmit Data
6 CTS Input: TTL Level Clear to Send
7 RTS Output: TTL Level RS232 Request to Send
8 PWRDWN Output: Active High = IS4823 is in Power Down Mode
9 nBEEPER
Output: Active Low, Signal Capable of Sinking Current
See Detailed Electrical Specifications starting on page 23.
10 nGood Scan
Output: Active Low, Signal for Sinking Current (Good Scan)
See Detailed Electrical Specifications starting on page 23.
11 nEXT WAKE
Input: Active Low, Signal Used to Bring Engine Out of
Power Down
12 EXT Trig
Input: Active Low, Signal Used as Trigger Input to Activate
the Engine
10-Pin ZIF Connector
Pin Signal Name Function
1 SDA
I2C Data (Bi-Directional) – Devices Function as Auxiliary
Devices
2 GND Ground: Power and Signal Ground
3 GND Ground: Power and Signal Ground
4 Scan Sense
Level changes from High to low or low to high when the
laser changes direction at the start of the scan line
High = Bar
5 Data
Low = Space
High = Engine OFF
6 Scan Enable
Low = Engine ON
High = Laser OFF
7 Laser Enable Low = Laser ON
8 NC No Connection
9 +3.3V or 5.0V Power: Supply Voltage Input, +3.3V ± 0.3V or +5.0V ± 5%
Figure 20.
10 SCL
I2C Data (Bi-Directional) – Devices Function as Auxiliary
Devices