Features: •Full-duplex SPI interface at frequencies up to 4MHz
•LIN transceiver capable of up to 100kbps with wave shaping
•Two 60mA high side and two 160mA low side protected switches
•Four high voltage analog/logic Inputs
•Configurable window watchdog
•5.0V low drop regulator with fault detection and low voltage reset (LVR) circuitry
•Current sense module
•Switched/protected 5.0V output (used for Hall sensors)
•Pb-free packaging designated by suffix code ACPinout
Specifications
| Ratings |
Symbol |
Value |
Unit |
| ELECTRICAL RATINGS |
Supply Voltage at VS1 and VS2
Normal Operation (DC)
Transient Conditions (load dump) |
VSUP(SS)
VSUP(PK) |
-0.3 to 27
-0.3 to 40 |
V |
| Supply Voltage at VDD |
VDD |
-0.3 to 5.5 |
V |
Input / Output Pins Voltage(6)
CS, RST, SCLK, PWMIN, ADOUT0, ADOUT1, MOSI, MISO, TXD, RXD,
HVDD
Interrupt Pin (IRQ)(7) |
VIN
VIN(IRQ) |
-0.3 to VDD +0.3
-0.3 to 11 |
V |
| HS1 and HS2 Pin Voltage (DC) |
VHS |
- 0.3 to VSUP +0.3 |
V |
| LS1 and LS2 Pin Voltage (DC) |
VLS |
-0.3 to 45 |
V |
L1, L2, L3 and L4 Pin Voltage
Normal Operation with a series 33k resistor (DC)
Transient input voltage with external component (according to ISO7637-2)
(See Figure 5, page 17) |
VLxDC
VLxTR |
-18 to 40
±100 |
V |
| ISENSEH and ISENSEL Pin Voltage (DC) |
VISENSE |
-0.3 to 40 |
V |
| VSENSE Pin Voltage (DC) |
VVSENSE |
-27 to 40 |
V |
LIN Pin Voltage
Normal Operation (DC)
Transient input voltage with external component (according to ISO7637-2)
(See Figure 4, page 17) |
VBUSDC
VBUSTR |
-18 to 40
-150 to 100 |
V |
| VDD output current |
IVDD |
Internally Limited |
A |
ESD Voltage(8)
Human Body Model - LIN Pin
Human Body Model - all other Pins
Machine Model
Charge Device Model
Corner Pins (Pins 1, 8, 9, 16, 17, 24, 25 and 32)
All other Pins (Pins 2-7, 10-15, 18-23, 26-31) |
VESD1-1
VESD1-2
VESD2
VESD3-1
VESD3-2 |
± 8000
±2000
± 200
± 750
± 500 |
V |
Notes
6.Exceeding voltage limits on specified pins may cause a malfunction or permanent damage to the device.
7.Extended voltage range for programming purpose only.
8.Testing is performed in accordance with the Human Body Model (CZAP = 100pF, RZAP = 1500), Machine Model (CZAP = 200pF, RZAP = 0) and the Charge Device Model, Robotic (CZAP = 4.0pF).
DescriptionThe 33912 is a Serial Peripheral Interface (SPI) -controlled System Basis Chip (SBC), combining many frequently used functions in an MCU-based system, plus a Local Interconnect Network (LIN) transceiver. The 33912 has a 5.0V - 60mA low dropout regulator with full protection and reporting features. The device provides full SPIreadable diagnostics and a selectable timing watchdog for detecting errant operation. The LIN Protocol Specification 2.0 compliant LIN transceiver has waveshaping circuitry that can be disabled for higher data rates.
Two 60mA high side switches and two 160mA low side switches with output protection are available for driving resistive and inductive loads. All outputs can be pulse-width modulated (PWM). Four high voltage inputs are available for use in contact monitoring, or as external wake-up inputs. These inputs can be used as high voltage Analog Inputs. The voltage on these pins is divided by a selectable ratio and available via an analog multiplexer.
The 33912 has three main operating modes: Normal (all functions available), Sleep (VDD off, wake-up via LIN, wake-up inputs (L1-L4), cyclic sense and forced wake-up), and Stop (VDD on with limited current capability, wake-up via CS, LIN bus, wake-up inputs, cyclic sense, forced wake-up and external reset).
The 33912 is compatible with LIN Protocol Specification 2.0.
33912 Data Sheet
