120 lines
3.2 KiB
Markdown
120 lines
3.2 KiB
Markdown
# Hellen 64 Miata NA6 94
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This development board is PnP for NA6 and 94-95 Miatas.
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[Download release firmware](https://github.com/rusefi/rusefi/releases/latest/download/rusefi_bundle_hellenNA6.zip)
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[Snapshot firmware bundle](https://rusefi.com/build_server/rusefi_bundle_hellenNA6.zip)
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[Interactive Pinout](https://rusefi.com/docs/pinouts/hellen/hellen64_miataNA6_94/)
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[Issue tracker](https://github.com/rusefi/hellenNA6_issues)
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[Mazda Miata 1990 Schematic](Mazda-Miata-1990)
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[Mazda Miata 1994 Schematic](Mazda-Miata-1994)
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## Hardware features
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* knock detection module
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* build-in WBO
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* battery to keep real time clock running
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* options port for additional I/O
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## **Rev A**
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[**Schematic Rev A**](Hardware/Hellen/hellen64_miataNA6_94-a-schematic.pdf)
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## **Rev B**
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[**Schematic Rev B**](Hardware/Hellen/hellen64_miataNA6_94-b-schematic.pdf)
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## Extension Pads (rev. b)
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| Pin | Type | Comments |
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||**Outputs**||
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| P9 | PP | 1.5 A peak |
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| P10 | PP | 1.5 A peak |
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| P12 | Bridge driver A | 3 A peak |
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| P11 | Bridge driver A | 3 A peak |
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| P13 | Bridge driver B | 3 A peak |
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| P14 | Bridge driver B | 3 A peak |
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| P8 | Low side | 1.4 A |
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| P15 | Low side | 1 A |
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| P16 | Low side | 1 A |
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| P17 | Low side (always hot) | 0.5 A |
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| P18 | Low side | 0.5 A |
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| P19 | Low side | 0.5 A |
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| P20 | Low side | 0.5 A |
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| P21 | Low side | 0.5 A |
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| P22 | High side | 4 A |
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| P23 | High side | 4 A |
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| P24 | PP 5 V | 20 mA |
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| P25 | PP 5 V | 20 mA |
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| P29 | PP 5 V | 20 mA |
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| P30 | PP 5 V | 20 mA |
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| P31 | PP 5 V | 20 mA |
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| P32 | PP 5 V | 20 mA |
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| | **Inputs** | |
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| P1 | Knock | |
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| P26 | Discrete pull down | |
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| P27 | Discrete pull down | |
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| P28 | Discrete pull down | |
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| P33 | Analog pull up | |
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| P34 | Analog pull up | |
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| P35 | Analog pull down | |
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| P36 | Analog pull up | |
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| P37 | Analog pull up| |
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| P38 | Analog pull down | |
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| P39 | Analog pull down | |
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| P40 | Analog pull up | |
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| P41 | Analog pull up | |
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| P42 | Discrete pull up | |
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| P43 | Discrete pull down | |
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| P44 | Discrete pull up | |
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| P45 | Discrete pull down | |
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| | **MCU** | |
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| P3 | GPIO | |
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| P4 | GPIO | |
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| P5 | GPIO | |
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| P6 | GPIO | |
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| J4 | SPI, UART, I2C, GPIO | See silkscreen and schematic for details |
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## Options Port (rev. b)
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| Pin | Type | Comments |
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| 2A | Ground | |
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| 2B | +5v | |
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| 2C | WBO Heater - | LSU 4.9 Pin 3 |
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| 2D | +12v | LSU 4.9 Pin 4 |
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| 2E | WBO R Trim | LSU 4.9 Pin 5 |
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| 2F | WBO Ip | LSU 4.9 Pin 1 |
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| 2G | WBO Vs/Ip | LSU 4.9 Pin 2 |
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| 2H | WBO Vs | LSU 4.9 Pin 6 |
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| 2I | VVT Output | |
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| 2J | Boost Control Output | |
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| 2K | Ground | |
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| 2L | Digital Input | Flex Sensor |
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| 2M | Pressure Sensor | |
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| 2N | Temperature Sensor | |
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| 2O | Ground | |
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| 2P | Knock Sensor Input | |
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**Options Port Schematic**
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## Additional Hardware
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[Options Port Connector](https://www.bmotorsports.com/shop/product_info.php/products_id/3460?osCsid=ru4mqe3g51skdvoflufkdpao00)
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[LSU 4.9 Wideband Connector](https://www.bmotorsports.com/shop/product_info.php/products_id/2081)
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[LSU 4.9 Wideband Sensor](https://www.bmotorsports.com/shop/product_info.php/products_id/1645) Or Similar
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