MCZ33905BS3EK Freescale Semiconductor, MCZ33905BS3EK Datasheet - Page 34

• Manufacturer Part Number: MCZ33905BS3EK
• Description: IC SBC CAN HS 3.3V 32SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MCZ33905BS3EK

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Basis Chip, combining:
integrated CAN interface and for the additional ICs such as
sensors, CAN transceiver.
2 and -5), with local and bus failure diagnostic, protection and
fail-safe operation mode.
POWER SUPPLY (VSUP/1 AND VSUP2)
connected on part number MC33903BDEK and
MC33903BSEK.
regulator. VSUP2 is the input pin for the 5 V-CAN regulator,
LIN’s interfaces and I/O functions. The VSUP block includes
over and under-voltage detections which can generate
interrupt. The device includes a loss of battery detector
connected to VSUP/1.
This generates a POR (Power On Reset).
VDD VOLTAGE REGULATOR (VDD)
Mode and LP Mode). It can operate with or without an
external PNP transistor.
capability is 150 mA. Current limitation, temperature pre-
warning flag and over-temperature shutdown features are
included. When V
controlled. Output voltage is 5.0 V. A 3.3 V option is available
via dedicated part number.
transistor must be connected to VE (PNP emitter) and VB
(PNP base) pins, in order to increase total current capability
and share the power dissipation between internal VDD
transistor and the external transistor. See
Q1 (VE and
than 150 mA, depending upon ambient temperature,
maximum supply and thermal resistance. Typically, above
100-200 mA, an external ballast transistor is recommended.
VDD REGULATOR IN LP MODE
regulator is able to supply the MCU with a DC current below
typically 1.5 mA (
supplied up to a tenth of a mA. Current in excess of 1.5 mA
is detected, and this event is managed by the device logic
34
33903/4/5
FUNCTIONAL DESCRIPTION
INTRODUCTION
The MC33903_4_5 is the second generation of System
- Advanced power management unit for the MCU, the
- Built in enhanced high speed CAN interface (ISO11898-
Note: VSUP1 and VSUP2 supplies are internally
VSUP1 is the input pin for the internal supply and the VDD
Loss of battery is reported through a bit (called BATFAIL).
The regulator has two main modes of operation (Normal
In Normal Mode, without external PNP, the max DC
If current higher than 150 mA is required, an external PNP
When the device is set in LP V
VB). The PNP can be used even if current is less
L
DD
P-ITH
is turned ON, rise time from 0 to 5.0 V is
). Transient current can also be
DD
ON Mode, the V
External Transistor
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
DD
INTRODUCTION
specification, with local and bus failure diagnostic and
protection.
solution.
LIN interface devices.
(Wake-Up detection, timer start for over-current duration
monitoring or watchdog refresh).
EXTERNAL TRANSISTOR Q1 (VE AND VB)
external “P” type transistor, with the objective to share the
power dissipation between the internal transistor of the V
regulator and the external transistor. The recommended
bipolar PNP transistor is MJD42C or BCP52-16.
between the internal path transistor and the external PNP,
with the following typical ratio: 1/3 in the internal transistor
and 2/3 in the external PNP. The PNP activation and control
is done by SPI.
transistor. In this case, the VE and VB pins must remain
open.
5 V-CAN VOLTAGE REGULATOR FOR CAN AND
ANALOG MUX
is required at 5 V-CAN pin. Analog MUX and part of the LIN
interfaces are supplied from 5 V-CAN. Consequently, the
5 V-CAN must be ON in order to have Analog MUX operating
and to have the LIN interface operating in TXD/RXD Mode.
turned ON by SPI. In Debug Mode, the 5 V-CAN is ON by
default.
V AUXILIARY OUTPUT, 5.0 AND 3.3 V
SELECTABLE (VB-AUX, VC-AUX, AND VCAUX) -
Q2
output, 5.0 or 3.3 V, selectable by the SPI. It uses an external
PNP pass transistor for flexibility and power dissipation
constraints. The external recommended bipolar transistors
are MJD42C or BCP52-16.
- Built in LIN interface, compliant to LIN 2.1 and J2602-2
- Innovative hardware configurable fail-safe state machine
- Multiple LP Modes, with low current consumption.
- Family concept with pin compatibility; with and without
The device has a dedicated circuit to allow usage of an
When the external PNP is connected, the current is shared
The device is able to operate without an external
This regulator is supplied from the VSUP/2 pin. A capacitor
The 5 V-CAN regulator is OFF by default and must be
The VAUX block is used to provide an auxiliary voltage
An over-current and under-voltage detectors are provided.
Analog Integrated Circuit Device Data
Freescale Semiconductor
DD