MC33912BAC Freescale Semiconductor, MC33912BAC Datasheet - Page 13

• Manufacturer Part Number: MC33912BAC
• Description: IC SYSTEM BASIS CHIP 32LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC33912BAC

• Applications: System Basis Chip
• Current - Supply: 4.5mA
• Voltage - Supply: 5.5 V ~ 27 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 4. Static Electrical Characteristics (continued)
34912, unless otherwise noted. Typical values noted reflect the approximate parameter mean at T
conditions, unless otherwise noted.
Analog Integrated Circuit Device Data
Freescale Semiconductor
L1, L2, L3 AND L4 INPUT PINS (L1, L2, L3, L4)
WINDOW WATCHDOG CONFIGURATION PIN (WDCONF)
ANALOG MULTIPLEXER
Notes
Low Detection Threshold
High Detection Threshold
Hysteresis
Input Current
Analog Input Impedance
Analog Input Divider Ratio (RATIO
Analog Output offset Ratio
Analog Inputs Matching
External Resistor Range
Watchdog Period Accuracy with External Resistor (Excluding Resistor
Accuracy)
Temperature Sense Analog Output Voltage
Temperature Sense Analog Output Voltage per characterization
Internal Chip Temperature Sense Gain
Internal Chip Temperature Sense Gain per characterization at 3
temperatures
VSENSE Input Divider Ratio (RATIO
34.
35.
36.
37.
38.
39.
Characteristics noted under conditions 5.5 V ≤ V
5.5 V < V
5.5 V < V
5.5 V < V
-0.2 V < V
LXDS (Lx Divider Select) = 0
LXDS (Lx Divider Select) = 1
LXDS (Lx Divider Select) = 0
LXDS (Lx Divider Select) = 1
LXDS (Lx Divider Select) = 0
LXDS (Lx Divider Select) = 1
T
T
T
T
5.5 V < V
A
A
A
A
= 125°C
= -40°C
= 25°C
= 25°C
The unused Lx pins must be connected to ground.
Analog multiplexer input disconnected from Lx input pin.
Analog multiplexer input connected to Lx input pin.
For V
Watchdog timing period calculation formula: t
These limits have been defined after laboratory characterization on 3 lots and 30 samples. These tighten limits could not be guaranteed
by production test.
(38)
(34)
SUP
SUP
SUP
SUP
SUP
(35)
IN
(39)
< VS1
4.7 V to 18 V
< 27 V
< 27 V
< 27 V
< 27 V
See
Figure 16, Temperature Sense Gain
(36)
(34)
(34)
Characteristic
Lx
VSENSE
= V
Lx
/ V
= V
ADOUT0
VSENSE
PWD
)
SUP
/ V
[ms] = [0.466 * (R
ADOUT0
(37)
≤ 18 V, -40°C ≤ T
(39)
)
V
EXT
RATIO
LX
ADOUT0_TEMP
V
V
S
RATIO
ADOUT0_25
Symbol
WD
OFFSET
MATCHING
RATIOLx-
S
TTOV_3T
- 20)] + 10 with (R
R
V
V
R
V
A
TTOV
I
LXIN
THH
HYS
EXT
THL
IN
ACC
VSENSE
≤ 125°C for the 33912 and -40°C ≤ T
LX
0.95
3.42
Min
800
2.0
3.0
0.4
-10
-80
-22
-15
2.0
2.8
3.6
3.1
9.0
9.9
5.0
96
96
20
STATIC ELECTRICAL CHARACTERISTICS
EXT
in kΩ)
ELECTRICAL CHARACTERISTICS
1300
3.15
10.5
10.2
5.25
Typ
100
100
2.5
3.5
0.8
1.0
3.6
6.0
2.0
3.0
A
–
–
–
-
-
= 25°C under nominal
2000
Max
1.05
3.78
10.5
104
104
200
3.0
4.0
1.4
2.8
3.6
4.6
3.2
5.5
10
80
22
15
12
A
≤ 85°C for the
mV/K
mV/K
Unit
mV
µA
kΩ
k
%
%
V
V
V
V
V
Ω
33912
13