Callisto is a cost-effective product representing the new generation of our mid-range products. It is sold in three dedicated versions:

• Engine Control Unit (ECU)
• Transmission Control Unit (TCU)
• Throttle-by-Wire Controller (TxW)

These versions are not interchangeable.

Each application group contains the correct electronic components, such as diodes and resistors, required for that specific application. This eliminates complicated harness modifications where these components would otherwise have to be installed in the wiring loom. It also reduces unnecessary component count inside the product, which helps keep the unit cost-effective.

Callisto includes both negative and positive drivers, allowing the system to drive many devices directly. This reduces costs because Callisto does not require external coil drivers when using basic coils.

The unit can connect directly to most sensors found on engines and transmissions.

Callisto is supplied with a wide range of firmware developed by Spitronics to support many applications used so far. This makes it a versatile product to keep in stock.

Units can be purchased unprogrammed, allowing the correct firmware to be loaded when the sale is made. This is very useful for dealers who wish to keep inventory without needing to stock many different variants.

Harness systems are simplified and each product group is supplied with specialised wiring looms.

Specifications:

Power Supply

12V Ignition power – 100 mA, filtered on board
12V Battery ignition power – 100 mA, filtered on board
12V Driver power – up to 14 A, depending on the load of connected devices

2.5 mm² earth strap for internal negative drivers
1.5 mm² battery earth for electronic components

 Fixed Inputs

• 2 × Digital inputs for Magnetic, Hall, or Optical sensors (jumper selectable)
  • 1 × Digital input for Dual Map, FlatShift, or RapidFire
  • 4 × Analogue inputs (0–5 V) for MAP, TPS, POT, and Lambda
  • 1 × Built-in 1.15 bar altitude sensor input (0–5 V) – optional, installed at purchase
  • 1 × Water temperature input – 1k, 2k, and 2.5k NTC sensor selectable
  • 1 × Air temperature input – 1k, 2k, 2.5k, and 10k NTC sensor selectable
  • 1 × UART communication port for Spitronics USB cable interface

Fixed Outputs

• 12 × 20 A 400 V High-Voltage Negative Drivers for coils, injectors or GP outputs (ground or floating output)
• 6 × 6 A 36 V Positive Drivers for smart coils and GP outputs (+12 V or floating output)
• 2 × 9 A 100 V Negative Drivers for relay and RPM output (ground or floating output)

Communication

Software UART connection via USB2 converter cable

Bootloader installed for firmware programming during production via USB cable

Physical Specifications

Size: 144 mm × 68 mm × 22 mm

Weight: 187 g (non-resin filled)

Connector type: Plastic Molex connectors
3–5 connectors depending on model: 12, 10, 8, 6, and 4 pin