MSll Sequencer Features

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MSll Sequencer Features Red text
indicates different or in addition to
MicroSquirt 1. Extra Motorola/Freescale
MC9S12C64, 16-bit microcontroller 2. Inputs a.
Variable reluctance (Vr) Cam b. Opto isolator /
Vr tachometer (only one) b. Flex Fuel Sensor c.
Sensor inputs a. Oxygen b. MAP c. MAT d.
CLT e. TPS f. Battery voltage (internal) g.
Spare analog (A/D) h. Boot load (extra one for
second processor) i. Additional analog input
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MSll Sequencer Features
(continued) 3. Outputs a. Fuel injector
drivers (8) 5 Amps Max. each driver a1. 1
low-impedance or 4 high-impedance per driver b.
Ignition drivers (8) 5 volt logic level c. Fuel
Pump relay driver d. Idle air control stepper
motor e. Warm-up enrichment LED driver f.
Acceleration LED driver g, Tachometer output h.
Vref output 20mA Max. 4. Communications a.
Can b. RS-232 c. Background debugger (internal)
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MSll Sequencer Features (continued) 5.
Miscellaneous a. CPLD (Complex Programmable
Logic Device) for coil drivers b. Two
connections to Sequencer processors PWM/GPIO
ports c. Connection to Sequencer processors PT3
input only, pulled-up d. Additional Ampseal
35-pinconnector e. Internal 14-pin expansion
connector e1. Seven pins connected to second
Ampseal connector e2. One pin connected to
internal 5 volt power supply e3. Two pins
connected to logic ground e4. CAN connection (2
pins) e5. Connection to processor 1s analog
input e6. Connection to O2 input (used in lieu
of O2 external input) e7. Switching power
supply to be updated with low voltage type e8.
2 pads connected to PE1 (input) and PE1
(PWM/GPIO) on main processor e9. 1
pad connected to PE1 (input) on second processor
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MSll Sequencer
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MSll Sequencer
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MS 3 Features
1. One Freescale MC9S12XEP100 X-gate
Microcontroller a. 50 MHz bus speed b. 1M bytes
FLASH memory c. 64k bytes RAM d. 4k bytes
EEPROM e. 12-bit analog to digital converter f.
CAN, SCI, IIC, SPI, Timers, parallel I/O, and
PWM I/O g. Uses 112-pin package 2. Uses 5 volt
linear power supply on MS board 3. Connects to
MS board via 40-pin processor connector. Same as
MSII
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MS 3 Features (continued)
I/O connectons 4. 34-pin expansion connector to
I/O ports a. Flex fuel input (PE2) b. PB0 thru
PB7 c. IGN2 (PT4) d. CAM (PT2) e. AN11, AN12,
AN13 f. PK0, PK1, PK2, PK3 g. PP2 thru PP7 h.
PM2 i. Vcc (From MS board. Very small current
capability) j. V12 (from MS board) k. Multiple
power grounds (7) 5. 10-pin expansion
connector a. PA0 thru PA7 b. 2 ground pins
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MS 3 Features (continued)
6. I/O continued a. CAN interface b. Idle
air stepper motor driver c. USB (In parallel
with RS-232 on MS board. Use USB or RS-232,
not both.) d. SD memory card interface e.
Background debugger (internal)
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MS3 Expansion Board

• I/O
• a. Fuel injector drivers (8) lt5 Amps Max. each
• b. Ignition drivers (8) 5 volt logic level
• c. 12 volt injector fly-back clamp connection
  (Connects directly to battery)
• d. 4-injector driver ground connections
• e. Input from CAMs VR sensor (CAM_OUT)
• f. Flex fuel input
• g. Launch control input
• h. Five, IPS022 outputs, from MS3 PWM outputs
• i. One, IPS022 outputs, from MS3 GPIO output
• j. Logic level ignition drive output from MS3
  (IGN2OUT)
• k. 3 filtered analog inputs to MS3 (AN11 thru
  AN13)
• l. 3 contact type inputs, pulled up to filtered
  12 volts from MS board

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MS3 Expansion Board
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MS3 Expansion Board
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MicroSquirt Module Features 1. Same features as
MicroSquirt, without Ampseal connector and
additional processor I/O access 2. One
Motorola/Freescale MC9S12C64, 16-bit
microcontroller 3. Inputs a. Variable
reluctance (Vr) Cam b. Opto isolator / Vr
tachometer (only one) c. Flex Fuel Sensor d.
Oxygen Sensor e. MAP Sensor f. MAT Sensor g.
CLT Sensor h. TPS Sensor i. Battery voltage
(internal) j. Spare analog (A/D) k. Boot load
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MicroSquirt Module Features (continued) 4.
Outputs a. Fuel injector drivers (2) 5 Amps
Max. each a1. 1 low-impedance or 4
high-impedance b. Ignition drivers (2) 7.5 Amps
Max. each c. Fuel Pump relay driver d. Idle air
control e. Warm-up enrichment LED driver f.
Acceleration LED driver g, Tachometer output h.
Vref output 20mA Max. for sensor power 5.
Communications a. CAN b. RS-232 c. Background
debugger (internal)
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MicroSquirt Module Features (continued)
6. 50-pin 2x25, 0.1 on center connector
(Replaces Ampseal 7. 10-pin 2x5, connector for
additional processor I/O a. PA0, PE1,PT6,PT7 b.
TTL drive for INJ-1 and INJ-2 in lieu of
transistors c. ALT_Cam input (threshold adjust
for 2nd VR input) d. IACEnbl (connects for MCU,
PB4)
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MicroSquirt Module
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MicroSquirt Module