33813 Datasheet, PDF (7/54 Pages) Freescale Semiconductor, Inc – One Cylinder Small Engine Control IC

Table 2. 33813 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 24.
Pin
Pin Name
Pin
Function
Formal Name
Description
29
BATSW
Output
Battery Switch This output is a 5.0 V logic level that is high when KEYSW is high. It is only
low when KEYSW is low. It can also be controlled via the SPI. The BATSW
output may not be present in a different package but it’s function can be read
by the SPI.
31
INJIN1
Input Injector Driver Input 1 ^{5.0 V logic level input from the MCU to control the injector 1 driver output (Can}
also be controlled via the SPI)
33
IGNIN1
Input
Ignition Input 1 5.0 V logic level input from MCU controlling the ignition coil # 1 current flow
and spark. (Can also be controlled via the SPI)
34
O2HIN
Input
O2 Sensor Heater ^{5.0 V logic level input used to turn on and off the O2HOUT driver. The}
Input
O2HOUT driver can also be turned on and off via the SPI if this pin is not
present in a different package.
35
RIN2
Input
Relay Driver Input 2 ^{5.0 V logic level input from the MCU to control the relay 2 driver output}
ROUT2. The ROUT2 driver can also be turned on and off via the SPI if this
pin is not present in a different package.
36
RIN1
Input
Relay Driver Input 1 ^{5.0 V logic level input from the MCU to control the relay 1 driver output}
ROUT1. The ROUT1 driver can also be turned on and off via the SPI if this
pin is not present in a different package.
37
KEYSW
Input
Key Switch Input ^{The Key Switch Input is a VPWR level signal that indicates that the Key is}
inserted and turned to the ON/OFF position. In the ON position the
(KEYSW = VBAT) the IC is enabled and BATSW = HIGH (Relay 2 ON if
programmed in SPI). In the OFF position the IC is in Sleep mode, only when
the PWREN bit in the SPI register is also low.
38
INJGND2
Ground
Injector Driver Ground connection for injector low side driver. Must be tied to VPWR ground.
Ground
40
RGND1
Ground
ROUT1 Power ^{Ground connection for ROUT 1 low side driver. Must be tied to VPWR ground.}
Ground
41
ROUT1
Output Relay Driver 1 Output ^{Low Side Relay Driver Output # 1 driven by the SPI input command or RIN1}
logic input
42
INJGND1
Ground
Injector Driver 1 Ground connection for injector 1 low side driver. Must be tied to VPWR
Ground
ground.
43
INJOUT1
Output
Injector Driver 1 ^{Low side driver output for injector 1 driven by the SPI input or by parallel input}
Output
INJIN1
44
ISO9141 Input/Output ISO9141 K-Line ^{ISO9141 pin is VPWR level IN/OUT signal which is connected to an external}
Bidirectional Serial _{ECU tester that uses the ISO9141 protocol. The output is open drain and the}
Data Signal
Input is a ratiometric VPWR level threshold comparator.
45
IGNFB1
Input
Feedback from ^{Voltage feedback from collector of ignition # 1 driver IGBT through 10:1}
Collector 1
voltage divider (9R:1R)
46
IGNOUT1
Output
Ignition Output 1 ^{Output to gate of IGBT or GPGD for ignition # 1}
Analog Integrated Circuit Device Data
Freescale Semiconductor
33813
7