33812 Datasheet, PDF (11/25 Pages) Freescale Semiconductor, Inc – SMALL ENGINE CONTROL IC

ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions of 7.0 V ≤ V_PWR ≤ 18 V, -40°C ≤ T_C ≤ 125°C, unless otherwise noted. Where applicable,
typical values reflect the parameter’s approximate average value with V_PWR = 14 V, T_A = 25°C.
Characteristic
Symbol
Min
Typ
Max
Unit
POWER INPUT
Required Low State Duration on VPWR for Under-voltage Detect
V_PWR ≤ V_{PWR_UV(15)}
t_UV
μs
1.0
–
–
WATCHDOG TIMER
Maximum time value Watchdog can be loaded with
WD_MAX
–
–
10
s
Maximum WDRFSH pulse width to load full Watchdog time value
WD_LOAD
–
–
1.0
ms
Minimum pulse width on WDRFSH to refresh Watchdog timer
WDRFSH_MIN
1.0
–
–
μs
Reset Pulse Width when Watchdog times out
WD_RESET
100
–
–
μs
ISO9141 TRANSCEIVER
Typical ISO9141 Data Rate⁽¹⁵⁾
ISO_BR
–
10
–
kbps
Turn OFF Delay MTX Input to ISO Output
t_TXDF
–
–
2.0
μs
Turn ON/OFF Delay ISO Input to MRX Output
t_RXDF, t_RXDR
–
–
1.0
μs
Rise and Fall Time MRX Output (measured from 10% to 90%)
t_RXR, t_RXF
–
Maximum Rise and Fall Time MTX Input (measured from 10% to 90%)⁽¹⁵⁾ t_TXR, t_TXF
–
–
1.0
μs
–
1.0
μs
LAMP DRIVER
Inrush Current Blanking Time (LAMPOUT only)
t_OC(BLANK)
5.0
7.0
9.0
ms
LAMPOUT, automatic retry timer during short to battery fault condition
t_{RETRY_LAMP}
7.0
10
13
ms
DIGITAL LOGIC OUTPUTS
INJFLT, IGNFLT Output Signal Rise Time ⁽¹⁵⁾
INJFLT, IGNFLT Output Signal Fall Time⁽¹⁵⁾
t _{R (DLO)}
–
100
200
ns
t _F(DLO)
–
100
200
ns
INJECTOR AND RELAY DRIVER
Output ON Current Limit Fault Filter Timer
t_SC
30
60
90
µs
Output OFF Open Circuit Fault Filter Timer (INJECTOR and RELAY
t_(OFF)OC
100
–
400
µs
Driver)
Output Slew Rate - Rise - Z_LOAD = 14 Ω , V_LOAD = 14 V
Output Slew Rate - Fall - Z_LOAD = 14 Ω, V_LOAD = 14 V
IGNITION PRE-DRIVER
t _SR(RISE)
1.0
5.0
10
V/μs
t _SR(FALL)
1.0
5.0
10
V/μs
Output OFF Open Circuit Fault Filter Timer
t_(OFF)OC
100
–
400
µs
Output ON Short-circuit to Battery Fault Detection Timer
t_(ON)(SC)
30
60
90
µs
Notes
15. This parameter is guaranteed by design, however is not production tested.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33812
11